Microsoft Office Ltsc 2021
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Code execution in Microsoft Word - across Microsoft 365 Apps for Enterprise, Office LTSC 2021, and Office LTSC 2024 - is achievable when a victim opens an attacker-crafted document containing a malformed numeric field that triggers an integer truncation flaw (CWE-197) inside the Word parsing path. The vulnerability carries a CVSS 3.1 base score of 8.8 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H), meaning no authentication or prior access is needed, but successful exploitation is gated by mandatory user interaction: the target must open or preview a malicious file, so delivery depends on phishing, web download, or similar social-engineering vectors. At time of analysis there is no public exploit identified, and Microsoft has published a fix via its MSRC update guide, so fully patched installations are not exposed.
Remote code execution in Microsoft Word affects Microsoft 365 Apps for Enterprise, Microsoft Office LTSC 2021, and Microsoft Office LTSC 2024, where a heap-based buffer overflow (CWE-122) is triggered when a victim opens or previews a specially crafted document. The CVSS vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) shows an unauthenticated remote attacker needs no credentials, but the UI:R metric confirms victim interaction is mandatory, making delivery dependent on phishing or file-sharing social engineering. Successful exploitation yields code execution at the privilege level of the user who opened the file, with high confidentiality, integrity, and availability impact, but no scope change or privilege escalation beyond that user's context; no public exploit identified at time of analysis, and a vendor patch is available from Microsoft. This is a credible patching priority despite the absence of exploitation telemetry.
Remote code execution in Microsoft Office Word (Microsoft 365 Apps for Enterprise, Office LTSC 2021/2024, and the corresponding macOS builds) allows an unauthenticated attacker to run arbitrary code in the security context of a victim who opens a specially crafted document. The flaw is a heap-based buffer overflow reachable over the network, and because it requires only low attack complexity and no privileges (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, base 8.8), the sole barrier to exploitation is the user-interaction requirement - the victim must open the malicious Word file, which is the primary limiting factor. No public exploit code has been identified at time of analysis, and there is no confirmed actively exploited (CISA KEV) status, but Microsoft has published a vendor patch, so this should be treated as a genuine high-priority, patch-now item rather than an emergency.
Remote code execution in Microsoft Outlook is possible through a heap-based buffer overflow that an unauthenticated, network-based attacker can trigger by convincing a victim to open or preview a crafted email message or Office document. The vulnerability affects Microsoft 365 Apps for Enterprise, Office LTSC 2021/2024, and Office 365 for Mac, but a vendor patch is available. Exploitation carries a high attack complexity due to required heap grooming and memory-layout control, and no public exploit code or active exploitation (CISA KEV) has been identified at time of analysis.
Remote code execution in Microsoft Word affects Microsoft 365 Apps for Enterprise, Office LTSC 2021, and Office LTSC 2024, where a crafted document triggers a heap-based buffer overflow and lets an unauthenticated attacker run code in the context of the victim. Exploitation is network-delivered (email or web) but requires the user to open or preview the malicious file (CVSS 3.1 8.8, AV:N/AC:L/PR:N/UI:R); no elevated privileges are needed on the target. No public exploit code has been identified at time of analysis, and Microsoft has released a vendor patch per its advisory; the severity and default-configuration reachability make this a real patching priority despite the user-interaction dependency.
Remote code execution in Microsoft Excel is possible when a user opens or previews a specially crafted spreadsheet, which triggers a use-after-free during file parsing and lets an unauthenticated attacker run code in the context of the victim. The flaw carries a CVSS of 8.8 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) and affects Microsoft 365 Apps for Enterprise, Office LTSC 2021/2024, the Mac LTSC and Office 365 for Mac builds, and Office Online Server, with no attacker authentication required but mandatory user interaction (UI:R) - meaning successful exploitation depends on social engineering rather than automatic server-side triggering, and Protected View plus Mark-of-the-Web warnings can interrupt the chain. At time of analysis there is no confirmed active exploitation (no CISA KEV listing) and no public exploit code identified, and Microsoft has published a vendor fix via its MSRC update guide; risk is high but manageable through prompt patching and the existing Office security defaults.
Remote code execution in Microsoft Word affects Microsoft 365 Apps for Enterprise, Office LTSC 2021/2024, and Office for Mac/LTSC for Mac editions, allowing an unauthenticated attacker to execute arbitrary code by convincing a victim to open a specially crafted document (UI:R). The stack-based buffer overflow (CWE-121) requires no privileges or non-default configuration (PR:N, AC:L), making it a high-priority target for social-engineering campaigns, though no public exploit code has been identified at time of analysis. Patch available per vendor advisory from the Microsoft Security Response Center.
Heap-based buffer overflow in Microsoft Office (Windows and macOS builds: Microsoft 365 Apps for Enterprise, Office LTSC 2021/2024, and Office 365/LTSC for Mac) allows unauthenticated remote attackers to execute arbitrary code when a victim opens a crafted document. Exploitation requires user interaction (UI:R in the CVSS vector) and is not zero-click, executing with the victim user's privileges rather than SYSTEM. No public exploit has been identified at time of analysis, and a vendor patch is available per the Microsoft advisory (CVE-2026-108444).
Remote code execution in Microsoft Word (part of Microsoft 365 Apps for Enterprise, Office 365 for Mac, and Office LTSC 2021/2024) allows unauthenticated attackers to execute arbitrary code in the context of the victim who opens a crafted document. The vulnerability is an off-by-one error (CWE-193) in the Word parser that can corrupt memory, and no public exploit code or active exploitation has been identified at time of analysis. Microsoft has released a patch via its MSRC update guide.
Use-after-free memory corruption in Microsoft Office Word enables remote attackers to execute arbitrary code with the privileges of the user who opens a maliciously crafted document. The flaw is unauthenticated (PR:N) but requires the victim to open the document (UI:R), and affects Microsoft 365 Apps for Enterprise, Office LTSC 2021/2024, and the corresponding macOS editions (Office 365 for Mac, Office LTSC for Mac 2021/2024). No public exploit code has been identified at time of analysis and there is no confirmed active exploitation (CISA KEV); vendor patches are available, making this a genuine high-priority patching target rather than an emergency.
Heap-based buffer overflow in Microsoft Word (CWE-122) enables remote code execution when a user opens an attacker-crafted document in an affected Office build - Microsoft 365 Apps for Enterprise, Office LTSC 2021/2024, or the Mac equivalents - and rates CVSS 8.8 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). Exploitation is unauthenticated (PR:N) but requires user interaction (UI:R): the malicious file must actually be opened, so delivery depends on phishing or document-sharing lures rather than autonomous network exploitation, and Protected View or Mark-of-the-Web sandboxing on untrusted documents can block the trigger until the user dismisses it. Vendor patches are available via the Microsoft Security Response Center update guide; no public exploit code or confirmed active exploitation was identified at time of analysis, though the high confidentiality, integrity, and availability impact across all supported Office channels warrants prompt patching.
Stack-based buffer overflow in Microsoft Word permits remote code execution in affected Microsoft 365 Apps for Enterprise, Microsoft Office 365 for Mac, and Office LTSC 2021/2024 (including Mac editions) when a victim opens a maliciously crafted document. The vulnerability is unauthenticated from the attacker's perspective but requires user interaction (UI:R), so delivery typically depends on phishing or social engineering, and no public exploit identified at time of analysis or CISA KEV confirmation is available in the provided data. Patch available per vendor advisory via Microsoft's MSRC update guide.
Heap-based memory corruption in Microsoft Word lets a remote, unauthenticated attacker execute arbitrary code in the security context of the user who opens a specially crafted Word document. Affected software includes Microsoft 365 Apps for Enterprise, Microsoft Office LTSC 2021 and 2024, and the corresponding Office LTSC/Office 365 for Mac builds referenced in the CPE list; exploitation is not automatic, since the victim must open the malicious file (UI:R), but no credentials or special configuration are required otherwise. Microsoft has published a security update, and no public exploit code was identified at time of analysis.
Heap-based buffer overflow in Microsoft Office Word allows unauthenticated remote attackers to execute code on vulnerable systems when a user opens a crafted document, affecting Microsoft 365 Apps for Enterprise, Office LTSC 2021, and Office LTSC 2024. The attack requires user interaction (opening a malicious file) and executes code in the context of the opening user without privilege escalation, resulting in a CVSS score of 8.8. No public exploit code or active exploitation has been identified, and a vendor patch is available; this is a high-priority vulnerability but not an emergency based on current signals.
Security-feature bypass in Microsoft Office Word - including the wider Microsoft 365 Apps for Enterprise and Office LTSC 2021/2024 families on Windows and macOS - lets an attacker defeat a protection mechanism such as Protected View, mark-of-the-web enforcement, or a trust/macro prompt by getting a victim to open or preview a crafted document. No attacker credentials or prior access are required (CVSS PR:N), but exploitation is local (AV:L) and depends on the target user interacting with the file (UI:R); a successful bypass yields high confidentiality, integrity, and availability impact for a 7.8 High severity rating. No public exploit code or confirmed active exploitation was identified at time of analysis, and Microsoft has released a patched update through its Update Guide (https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-108433).
Heap-based buffer overflow in Microsoft Word allows remote, unauthenticated attackers to execute arbitrary code when a user opens a maliciously crafted document. Affected products include Microsoft 365 Apps for Enterprise, Office LTSC 2021/2024, and their macOS editions, with a CVSS score of 8.8; no public exploit identified at time of analysis, and CISA KEV does not list active exploitation, though high impact and low attack complexity make this a genuine high-priority issue. The primary limiting factor is the required user interaction to open the weaponized file, and code runs with the victim's privileges rather than SYSTEM.
Remote code execution in Microsoft Word affects Microsoft 365 Apps for Enterprise, Office LTSC 2021 and 2024, Office LTSC for Mac 2021 and 2024, and Office 365 for Mac when a user opens or previews a specially crafted document. The flaw is a stack-based buffer overflow (CWE-121) rated 8.8, reachable by unauthenticated remote attackers with PR:N but requiring user interaction with UI:R; successful exploitation yields code execution with the victim user’s privileges. A vendor patch is available, and no public exploit has been identified at time of analysis.
Heap-based buffer overflow in Microsoft Word (CWE-122) allows an unauthorized attacker to execute code in the context of the victim when a specially crafted Word document is opened, earning a CVSS 3.1 base score of 8.8 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). The flaw affects Word as shipped in Microsoft 365 Apps for Enterprise, Office 365 for Mac, and Office LTSC 2021 and 2024 on both Windows and macOS. Exploitation is unauthenticated from the attacker's side but requires the victim to open an attacker-supplied file, so success depends on social engineering and on getting past Protected View or Mark-of-the-Web warnings for documents downloaded from the internet. No public exploit code was identified at time of analysis and the issue is not listed as confirmed actively exploited (CISA KEV); patch data indicates a vendor fix is available via the Microsoft Security Response Center advisory.
Heap-based buffer overflow in Microsoft Word (Microsoft 365 Apps for Enterprise, Office LTSC 2021 and Office LTSC 2024) allows a remote, unauthenticated attacker to execute code in the context of the victim when a crafted document is opened, matching a CVSS 3.1 vector of AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H (8.8 High). Exploitation is not interaction-free: the vector's UI:R component and the assessed conditions require file delivery plus a user open action, so Protected View and Mark-of-the-Web prompts materially limit real-world success. No public exploit code or active exploitation has been identified at time of analysis, but a vendor patch is available from Microsoft and this remains a genuine priority for patching.
Heap-based buffer overflow in Microsoft Word allows remote unauthenticated attackers to execute arbitrary code when a victim opens a specially crafted document. Affects Microsoft 365 Apps for Enterprise and Office LTSC 2021/2024. No public exploit identified at time of analysis, but this is a genuine high-priority issue given the potential for code execution and widespread product deployment; exploitation requires user interaction (opening or previewing the malicious file).
Heap-based memory corruption in Microsoft Word - affecting Microsoft 365 Apps for Enterprise, Microsoft Office LTSC 2021, and Microsoft Office LTSC 2024 - lets a remote, unauthenticated attacker execute arbitrary code in the context of the victim, but only when that victim opens or previews a specially crafted Word document. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, base 8.8) confirms the trigger is entirely dependent on user interaction, so there is no zero-click or server-side path; no public exploit code or confirmed active exploitation has been identified at time of analysis, and a vendor patch is available. That combination - high technical severity but a required user action and an available fix - makes this a high-priority vulnerability rather than an emergency.
A heap-based buffer overflow in Microsoft Word's document-parsing code lets an unauthenticated remote attacker execute arbitrary code when a victim opens a maliciously crafted Word file, affecting Microsoft 365 Apps for Enterprise and Office LTSC 2021/2024. The attack is network-deliverable (typically a phishing attachment or downloaded document) but cannot trigger without user interaction, since the victim must open or preview the file; successful exploitation runs code in that user's security context rather than SYSTEM. No public exploit code and no confirmed active exploitation were identified at time of analysis, so this is a high-priority patching item - rated 8.8 with the vendor patch already available - rather than an emergency zero-day response.
Remote code execution in Microsoft Outlook (delivered through Microsoft 365 Apps for Enterprise, Office LTSC 2021, and Office LTSC 2024) arises from an integer overflow/wraparound that an unauthorized attacker can trigger by delivering a specially crafted message or file to an affected client. The vector is network-reachable, unauthenticated (PR:N), and lists no user interaction (UI:N), but high attack complexity (AC:H) means the attacker must satisfy specific, not fully controllable conditions to convert the wraparound into reliable memory corruption and code execution; CISA SSVC accordingly marks the flaw non-automatable and no exploitation has been observed. Signals are mixed and point to a serious-but-not-emergency priority: EPSS is only 0.35% (26th percentile), no public exploit code or KEV listing exists, technical impact is total if successful, and Microsoft has released a vendor patch.
Heap-based buffer overflow in Microsoft Outlook can lead to arbitrary code execution when a user opens or otherwise acts on a crafted email or Office item, affecting Microsoft 365 Apps for Enterprise, Office LTSC 2021, and Office LTSC 2024. The flaw carries a CVSS score of 7.8 with a local attack vector, no privileges required, and mandatory user interaction, and Microsoft has published a vendor update. No public exploit has been identified at time of analysis; EPSS is 0.44% (36th percentile) and CISA SSVC rates exploitation as none and automatable as no, making this a this-week priority rather than an emergency.
Information disclosure via improper input validation in Microsoft Office Word enables unauthenticated remote attackers to extract sensitive data across a broad product surface spanning Word 2016, Office 2019, multiple LTSC releases, and Microsoft 365 Apps for Enterprise on both Windows and macOS. The vendor-assigned CVSS vector (AV:N/AC:L/PR:N/UI:N) indicates no user interaction is required, though SSVC's 'Automatable: no' designation creates measurable tension with that assessment. No public exploit has been identified at time of analysis, and EPSS at 0.54% (43rd percentile) reflects low near-term exploitation probability despite the CVSS 7.5 rating.
Remote code execution via use-after-free in Microsoft Excel affects multiple product lines including Microsoft 365 Apps for Enterprise, Excel 2016, and Office 2019/LTSC 2021/LTSC 2024. An unauthenticated remote attacker can exploit this memory corruption flaw by convincing a target user to open a specially crafted Excel workbook, resulting in arbitrary code execution under the context of the victim process. No public exploit code has been identified at time of analysis and this vulnerability is not listed in the CISA KEV catalog, though the low-complexity, no-privilege network attack vector makes it an attractive phishing payload candidate.
Local code execution in Microsoft Office Excel (across Microsoft 365 Apps for Enterprise, Office LTSC 2021/2024, and their macOS counterparts) arises from a heap-based buffer overflow (CWE-122) triggered when a victim opens a maliciously crafted spreadsheet. An unauthorized attacker can achieve arbitrary code execution in the context of the current user, gaining high confidentiality, integrity, and availability impact. There is no public exploit identified at time of analysis and the CVE is not listed in CISA KEV, but a vendor patch is available from Microsoft.
Local code execution in Microsoft Office Excel (2016, 2019, LTSC 2021/2024, Microsoft 365 Apps, Office for Mac, and Office Online Server) allows an attacker to run arbitrary code in the context of the current user when a victim opens a maliciously crafted spreadsheet. The flaw stems from use of an uninitialized resource (CWE-908) and carries a CVSS 7.8; it requires user interaction (opening the file) and no prior privileges. No public exploit identified at time of analysis, and it is not listed in CISA KEV, but a vendor patch is available.
Local code execution in Microsoft Excel (Office 2016 through Office LTSC 2024, Microsoft 365 Apps, Office for Mac, and Office Online Server) allows an attacker to run arbitrary code when a victim opens a maliciously crafted spreadsheet. The flaw is a heap-based buffer overflow (CWE-122) triggered during file parsing, giving full confidentiality, integrity, and availability impact in the user's context. No public exploit identified at time of analysis, and it is not listed in CISA KEV, so exploitation currently appears theoretical rather than active.
Information disclosure in Microsoft Excel (across Microsoft 365 Apps, Office 2016/2019, Office LTSC 2021/2024, Office for Mac, and Office Online Server) lets an attacker read out-of-bounds heap memory when a victim opens a maliciously crafted spreadsheet, potentially leaking sensitive process memory. The flaw (CWE-125, CVSS 7.1) requires local user interaction and no privileges, but is not remotely triggerable without the user opening the file. There is no public exploit identified at time of analysis, EPSS is low at 0.30%, and CISA SSVC rates exploitation as none.
Arbitrary code execution in Microsoft Office Excel arises from a use-after-free (CWE-416) memory-corruption flaw affecting Microsoft 365 Apps for Enterprise, Office 2019, Office LTSC 2021/2024, Office for Mac, and Office Online Server. The CVSS 3.1 vector (AV:L/UI:R) makes this a user-interaction-dependent, locally-scoped issue: a victim must open a maliciously crafted Excel workbook, after which the attacker gains code execution in the user's security context. No public exploit is identified at time of analysis and it is not listed in CISA KEV, but a vendor patch is available.
Arbitrary code execution in Microsoft PowerPoint (and the broader Microsoft Office/365 suite on Windows and macOS) arises from a heap-based buffer overflow (CWE-122) triggered when a victim opens a maliciously crafted presentation file. An attacker who cannot log in to the target can still run code in the context of the current user by convincing that user to open the booby-trapped file, giving full confidentiality, integrity, and availability impact on the affected host. Microsoft has released a patch; there is no public exploit identified at time of analysis and the flaw is not listed in CISA KEV.
Local code execution in Microsoft Office PowerPoint (including Microsoft 365 Apps, Office 2019, Office LTSC 2021/2024, and their macOS variants) arises from a heap-based buffer overflow triggered when a victim opens a maliciously crafted presentation file. Successful exploitation runs attacker-controlled code with the privileges of the current user, yielding full confidentiality, integrity, and availability impact. There is no public exploit identified at time of analysis and the issue is not listed in CISA KEV, but Microsoft has released a patch.
Local code execution in Microsoft Office PowerPoint (CWE-122 heap-based buffer overflow) lets an unauthorized attacker run arbitrary code when a victim opens a maliciously crafted presentation file. The flaw affects a broad Office footprint - PowerPoint 2016, Office 2019, Office LTSC 2021/2024, Microsoft 365 Apps for Enterprise, and multiple Office for Mac builds - and requires user interaction (opening the file) but no prior privileges. A vendor patch is available via MSRC; there is no public exploit identified at time of analysis and it is not listed in CISA KEV.
Local code execution in Microsoft Word (Office 2016/2019, Microsoft 365 Apps, Office LTSC 2021/2024) arises from a heap-based buffer overflow triggered when a victim opens a maliciously crafted document. An attacker who convinces a user to open a booby-trapped file can run arbitrary code in that user's context, achieving full compromise of confidentiality, integrity, and availability on the host. No public exploit identified at time of analysis and the flaw is not listed in CISA KEV, though a vendor patch is available per Microsoft's MSRC advisory.
Local code execution in Microsoft Office Word (CWE-416 use-after-free) allows an unauthorized attacker to run arbitrary code in the context of the current user when a victim opens a maliciously crafted document. The flaw affects a broad Office footprint including Microsoft 365 Apps for Enterprise, Office 2019, Office LTSC 2021/2024 (Windows and Mac), and related SharePoint Server products that process Word documents. Microsoft has released a patch; no public exploit has been identified at time of analysis, and neither KEV nor EPSS/POC signals were provided in the input.
Local code execution in Microsoft Office (2016, 2019, LTSC 2021/2024, 365 Apps for Enterprise, and Office for Mac) arises from a heap-based buffer overflow (CWE-122) that an attacker triggers by getting a victim to open a maliciously crafted Office document. Rated CVSS 7.8 with high impact to confidentiality, integrity, and availability, exploitation requires user interaction but no prior authentication or privileges. There is no public exploit identified at time of analysis, and it is not listed in CISA KEV, but Microsoft has released a patch via the MSRC update guide.
Local code execution in Microsoft Office (Microsoft 365 Apps, Office 2016/2019, LTSC 2021/2024, and Office for Mac) arises from a heap-based buffer overflow (CWE-122) that an attacker triggers by convincing a user to open a maliciously crafted document. The CVSS 3.1 score is 7.8 (AV:L/AC:L/PR:N/UI:R) with high impact to confidentiality, integrity, and availability, meaning code runs in the context of the current user. No public exploit identified at time of analysis, and it is not listed in CISA KEV; a vendor patch is available via MSRC.
Local code execution in Microsoft Office Word (Microsoft 365 Apps, Office 2019/LTSC 2021/2024, Word 2016, and the macOS builds) arises from a stack-based buffer overflow triggered when a victim opens a maliciously crafted document. The CVSS 3.1 vector (AV:L/AC:L/PR:N/UI:R) shows an unauthenticated attacker needs no privileges but does require user interaction, and successful exploitation yields full confidentiality, integrity, and availability impact in the user's security context. There is no public exploit identified at time of analysis and it is not listed in CISA KEV, but Microsoft has released a patch.
Arbitrary code execution in Microsoft Office Excel arises from a heap-based buffer overflow (CWE-122) that an attacker triggers when a victim opens a maliciously crafted spreadsheet, running code in the security context of the current user. The flaw spans a broad Office footprint including Microsoft 365 Apps for Enterprise, Excel 2016, Office 2019, Office LTSC 2021/2024, the macOS Office editions, and Office Online Server. There is no public exploit identified at time of analysis, and it is not listed in CISA KEV; the CVSS 7.8 rating reflects high impact gated by required user interaction.
Information disclosure in Microsoft Office Excel (2016, Office 2019, LTSC 2021/2024, Microsoft 365 Apps, Office for Mac, and Office Online Server) lets an attacker read out-of-bounds memory when a victim opens a maliciously crafted spreadsheet, potentially leaking sensitive process data such as memory contents, pointers, or credentials. Rated CVSS 7.1 with a local attack vector requiring user interaction, the flaw stems from a CWE-125 out-of-bounds read in Excel's file parser. There is no public exploit identified at time of analysis and it is not listed in CISA KEV, but the ubiquity of Excel and Microsoft's confirmed patch make prompt patching important.
Local code execution in Microsoft Excel arises from a heap-based buffer overflow (CWE-122) that an attacker triggers by luring a victim into opening a maliciously crafted spreadsheet, yielding attacker code in the user's security context. It affects a broad Office family including Microsoft 365 Apps for Enterprise, Excel 2016, Office 2019, Office LTSC 2021/2024, the macOS editions, and Office Online Server. The CVSS 3.1 base score is 7.8 and the vector requires user interaction (UI:R); there is no public exploit identified at time of analysis and it is not listed in CISA KEV.
Local code execution in Microsoft Office Excel (across Microsoft 365 Apps, Office 2016/2019, LTSC 2021/2024, Office for Mac, and Office Online Server) stems from a heap-based buffer overflow (CWE-122) that an attacker triggers when a victim opens a maliciously crafted spreadsheet. Rated CVSS 7.8 with no privileges required but mandatory user interaction, successful exploitation yields full confidentiality, integrity, and availability impact in the context of the victim user. There is no public exploit identified at time of analysis and it is not on the CISA KEV list, but Microsoft has released a patch.
Local code execution in Microsoft Word (part of Microsoft 365 Apps, Office 2019, Office LTSC 2021/2024, and Office for Mac) stems from a double free of heap memory (CWE-415) that lets an unauthorized attacker run arbitrary code when a victim opens a malicious document. The flaw was reported by Microsoft, carries CVSS 7.8, and a vendor patch is available; there is no public exploit identified at time of analysis and it is not listed in CISA KEV. Because exploitation requires the target to open a crafted file (UI:R), it is a user-interaction-gated client-side RCE rather than a remotely-triggerable service bug.
Arbitrary code execution in Microsoft Office Word (and the broader Office/365/SharePoint family) arises from a stack-based buffer overflow (CWE-121) that an attacker triggers when a victim opens a maliciously crafted document. The CVSS 3.1 vector (AV:L/UI:R) confirms this is a file-borne, local-context flaw requiring the user to open attacker-supplied content, yielding full confidentiality, integrity, and availability impact in the user's session. No public exploit identified at time of analysis, and it is not listed in CISA KEV; Microsoft has released a patch via MSRC.
Local code execution in Microsoft Office Excel (Microsoft 365 Apps, Office 2019, Office LTSC 2021/2024, Office for Mac, Office Online Server) arises from an out-of-bounds read (CWE-125) that an attacker weaponizes by luring a victim into opening a crafted spreadsheet, yielding code execution in the user's security context. The flaw carries a CVSS 7.8 (AV:L/AC:L/PR:N/UI:R) and requires no privileges but does require user interaction. Microsoft has released a patch; there is no public exploit identified at time of analysis and it is not listed in CISA KEV.
Arbitrary code execution in Microsoft Excel (spanning Microsoft 365 Apps, Office 2016/2019, Office LTSC 2021/2024, Office for Mac, and Office Online Server) allows an unauthorized attacker to run code in the victim's context by tricking them into opening a maliciously crafted spreadsheet. The flaw is a heap-based buffer overflow (CWE-122) that executes with the local user's privileges once the file is opened. Microsoft has released a patch; there is no public exploit identified at time of analysis and the CVE is not listed in CISA KEV.
Local code execution in Microsoft Office Word (via a stack-based buffer overflow, CWE-121) lets an attacker run arbitrary code in the context of the user who opens a maliciously crafted document. The flaw affects Microsoft 365 Apps for Enterprise, Office 2019, Office LTSC 2021/2024 (including Mac editions), and the Word component shared with SharePoint Server 2016/2019/Subscription Edition. No public exploit identified at time of analysis, and it is not listed in CISA KEV; exploitation requires the victim to open the attacker's file (UI:R).
Local code execution in Microsoft Excel (Microsoft 365 Apps, Office 2019, Office LTSC 2021/2024, Office for Mac, and Office Online Server) arises from an out-of-bounds read (CWE-125) triggered when a victim opens a maliciously crafted spreadsheet. CVSS 7.8 with high impact to confidentiality, integrity, and availability; no public exploit identified at time of analysis. Exploitation requires user interaction (opening the file) but no prior authentication or privileges on the target beyond the ability to induce the user to open the document.
Local arbitrary code execution in Microsoft Excel arises from a buffer over-read (CWE-126) triggered when a victim opens a maliciously crafted spreadsheet, letting an attacker run code in the context of the current user. The flaw spans Office 2016/2019, Microsoft 365 Apps, Office LTSC 2021/2024 (Windows and Mac) and Office Online Server; a vendor patch is available via MSRC. No public exploit has been identified at time of analysis, and the CVSS 7.8 (AV:L/UI:R) rating reflects that user interaction is required.
Local code execution in Microsoft Office (2016, 2019, LTSC 2021/2024, Microsoft 365 Apps for Enterprise, and Office for Mac) arises from a heap-based buffer overflow (CWE-122) triggered when a user opens a maliciously crafted document. Rated CVSS 7.8 (AV:L/UI:R), an attacker who convinces a victim to open a weaponized file can run arbitrary code in the context of the current user. Microsoft has released a patch; there is no public exploit identified at time of analysis and it is not listed in CISA KEV.
Local code execution in Microsoft Excel (and the broader Office 2016/2019/LTSC 2021/2024, Microsoft 365 Apps, Office for Mac, and Office Online Server family) results from a stack-based buffer overflow triggered when a victim opens a maliciously crafted spreadsheet. An attacker who convinces a user to open a booby-trapped file can run arbitrary code in the context of that user, with full confidentiality, integrity, and availability impact. There is no public exploit identified at time of analysis and it is not on CISA KEV, but the ubiquity of Excel and Microsoft's own advisory make this a routine patch-Tuesday-class priority.
Arbitrary local code execution in Microsoft Office Excel (spanning Microsoft 365 Apps for Enterprise, Excel 2016, Office 2019, Office LTSC 2021/2024, the Office for Mac editions, and Office Online Server) lets an attacker run code in the current user's context when a victim opens a maliciously crafted spreadsheet. The flaw is an untrusted pointer dereference (CWE-822) triggered during file parsing; it requires user interaction but no prior privileges. No public exploit is identified at time of analysis, and a vendor patch is available from Microsoft (MSRC).
Local code execution in Microsoft Word (and the wider Microsoft Office / Microsoft 365 Apps family) lets an unauthorized attacker run arbitrary code when a victim opens a maliciously crafted Word document that triggers a heap-based buffer overflow. All impacted SKUs - Microsoft 365 Apps for Enterprise, Office 2019, Office LTSC 2021/2024, the macOS Office builds, and SharePoint Server (which renders Office documents server-side) - are affected, and Microsoft has released a patch. There is no public exploit identified at time of analysis and the flaw is not listed in CISA KEV.
Local code execution in Microsoft Excel (and the broader Office family including Microsoft 365 Apps for Enterprise, Office 2019/2021/2024 LTSC, Office for Mac, and Office Online Server) stems from a heap-based buffer overflow that triggers when a user opens a maliciously crafted spreadsheet. The CVSS vector (AV:L/AC:L/PR:N/UI:R) indicates an unauthenticated attacker gains full code execution in the victim's context but only after the target opens the file. No public exploit identified at time of analysis, and it is not listed in CISA KEV; a vendor patch is available from Microsoft (MSRC CVE-2026-55041).
Local code execution in Microsoft Word (and Office/SharePoint components that render Word content) stems from an integer overflow in the file-parsing path, letting an attacker who convinces a victim to open a crafted document run arbitrary code with the victim's privileges. It affects a broad Office footprint including Microsoft 365 Apps, Office 2019, Office LTSC 2021/2024, the macOS editions, and SharePoint Server 2016/2019/Subscription Edition. There is no public exploit identified at time of analysis and it is not listed in CISA KEV, but the 7.8 CVSS and Word's ubiquity make it a routine priority patch.
Local code execution in Microsoft Office Word (across Microsoft 365 Apps, Office 2019/LTSC 2021/2024, Office for Mac, and Word 2016) allows an attacker to run arbitrary code by exploiting a use-after-free memory corruption flaw when a victim opens a maliciously crafted document. The CVSS 3.1 base score is 7.8 with a local attack vector requiring user interaction; there is no public exploit identified at time of analysis and the flaw is not listed in CISA KEV. Microsoft, which reported the issue itself, has released a patch.
Local arbitrary code execution in Microsoft Office (Microsoft 365 Apps for Enterprise, Office 2016/2019, Office LTSC 2021/2024, and their macOS equivalents) arises from a heap-based buffer overflow (CWE-122) that an attacker triggers by convincing a user to open a maliciously crafted Office document. The CVSS 3.1 vector (AV:L/AC:L/PR:N/UI:R) shows the flaw requires user interaction but no prior privileges, yielding full high-impact compromise of confidentiality, integrity, and availability in the user's context. There is no public exploit identified at time of analysis and it is not listed in CISA KEV, so exploitation status is not currently confirmed.
Local code execution in Microsoft Office (2016, 2019, LTSC 2021/2024, 365 Apps, and the macOS builds) stems from an out-of-bounds read in a file-parsing routine that lets a crafted document corrupt memory and run attacker-controlled code in the context of the current user. The same document-parsing components also affect SharePoint Enterprise Server 2016, SharePoint Server 2019, and the Subscription Edition. Reported by Microsoft with a vendor patch available; no public exploit identified at time of analysis.
Local code execution in Microsoft Excel (and the broader Office suite through Microsoft 365 Apps, Office 2019/2021/2024 LTSC, Office for Mac, and Office Online Server) arises from an integer underflow (CWE-191) in Excel's file parsing, letting an attacker run arbitrary code in the context of the user who opens a maliciously crafted spreadsheet. The CVSS 3.1 vector (AV:L/AC:L/PR:N/UI:R) shows no attacker privileges are needed but the victim must open the file, giving full confidentiality, integrity, and availability impact. No public exploit identified at time of analysis, and it is not listed in CISA KEV; a vendor patch is available.
Arbitrary code execution in Microsoft Excel (across Microsoft 365 Apps, Office 2019, Office LTSC 2021/2024, Office for Mac, and Office Online Server) arises from a heap-based buffer overflow (CWE-122) that triggers when a victim opens a maliciously crafted spreadsheet. The CVSS 3.1 vector (AV:L/AC:L/PR:N/UI:R) confirms this is a local, user-interaction-dependent file-format attack rather than a remote network exploit, yielding code execution in the context of the current user. No public exploit has been identified at time of analysis, and the CVE is not listed in CISA KEV; a Microsoft patch is available.
Local code execution in Microsoft Excel (spanning Microsoft 365 Apps for Enterprise, Excel 2016, Office 2019, Office LTSC 2021/2024, the macOS Office builds, and Office Online Server) arises from an integer overflow (CWE-190) triggered when the application parses a maliciously crafted spreadsheet. An unauthorized attacker who convinces a victim to open a booby-trapped file can run arbitrary code in the context of the current user, with full confidentiality, integrity, and availability impact per the 7.8 CVSS vector. There is no public exploit identified at time of analysis, and it is not listed in CISA KEV.
Local code execution in Microsoft Office Excel (spanning Excel 2016, Office 2019, Office LTSC 2021/2024, Microsoft 365 Apps for Enterprise, the macOS builds, and Office Online Server) arises from an out-of-bounds read (CWE-125) that an attacker triggers by convincing a user to open a maliciously crafted workbook. The CVSS 3.1 base score is 7.8 with high confidentiality, integrity, and availability impact, but exploitation requires user interaction (opening the file) and no active exploitation or public proof-of-concept has been reported. There is no public exploit identified at time of analysis; Microsoft has released a patch via its Security Update Guide.
Local code execution in Microsoft Office (Microsoft 365 Apps, Office 2016/2019, LTSC 2021/2024, Office for Mac, and SharePoint Server) arises from a heap-based buffer overflow (CWE-122) that an unauthorized attacker triggers when a victim opens a maliciously crafted document. The CVSS 3.1 base score is 7.8 (AV:L/AC:L/PR:N/UI:R) with high confidentiality, integrity, and availability impact, meaning successful exploitation yields full code execution in the context of the current user. There is no public exploit identified at time of analysis and it is not listed in CISA KEV, but the ubiquity of Office makes it a high-priority patch target.
Local code execution in Microsoft Excel (Microsoft 365 Apps, Office 2019/LTSC 2021/2024, Office for Mac, and Office Online Server) arises from a type-confusion flaw (CWE-843) in how Excel parses spreadsheet content. An attacker who convinces a victim to open a malicious workbook can run arbitrary code in the context of the current user, gaining high confidentiality, integrity, and availability impact. Reported by Microsoft with a patch available; there is no public exploit identified at time of analysis and it is not listed in CISA KEV.
Local arbitrary code execution in Microsoft Office (2016, 2019, LTSC 2021/2024, Microsoft 365 Apps for Enterprise, and Office for Mac 2021/2024) arises from a type-confusion flaw (CWE-843) that lets an attacker run code in the context of the current user when a victim opens a crafted file. The CVSS 3.1 base score is 7.8 (AV:L/AC:L/PR:N/UI:R) reflecting local vector with required user interaction and high impact to confidentiality, integrity, and availability. There is no public exploit identified at time of analysis and it is not listed in CISA KEV, but a vendor patch is available via MSRC.
Local code execution in Microsoft Office (2016, 2019, LTSC 2021/2024, Microsoft 365 Apps for Enterprise, and Office for Mac) stems from a use-after-free memory corruption (CWE-416) that an attacker triggers when a victim opens a maliciously crafted document. Rated CVSS 7.8 with high confidentiality, integrity, and availability impact, exploitation requires user interaction but no prior authentication, letting an attacker run arbitrary code in the context of the current user. There is no public exploit identified at time of analysis and it is not listed in CISA KEV, but Microsoft has released a fix, so patching should be prioritized during the normal Patch Tuesday cycle.
Local code execution in Microsoft Excel (Office 2016 through LTSC 2024, Microsoft 365 Apps, and Mac editions) allows an attacker to run arbitrary code by tricking a user into opening a maliciously crafted spreadsheet that triggers a type-confusion condition in Excel's file parser. The CVSS 3.1 score is 7.8 (High) with the local vector reflecting file-open exploitation rather than remote-network access, and success requires user interaction. There is no public exploit identified at time of analysis and it is not listed in CISA KEV.
Local code execution in Microsoft Office (365 Apps for Enterprise, Office 2016/2019, and Office LTSC 2021/2024) arises from a heap-based buffer overflow that an attacker triggers when a victim opens a maliciously crafted Office document. Successful exploitation yields full confidentiality, integrity, and availability impact in the context of the current user. There is no public exploit identified at time of analysis and it is not listed in CISA KEV, but the ubiquity of Office and the low attack complexity make this a meaningful patch priority.
Local code execution in Microsoft Office (2016, 2019, LTSC 2021/2024, Microsoft 365 Apps, and Office for Mac 2021/2024) arises from a use-after-free memory corruption flaw that an attacker triggers by convincing a user to open a maliciously crafted Office document. Successful exploitation runs arbitrary code in the context of the current user, yielding full confidentiality, integrity, and availability impact on the host. There is no public exploit identified at time of analysis and the flaw is not listed in CISA KEV; Microsoft has published a patch via MSRC.
Local code execution in Microsoft Office (2016, 2019, LTSC 2021/2024, Microsoft 365 Apps, and the macOS editions) arises from a use-after-free memory-corruption flaw (CWE-416) that lets an attacker run arbitrary code in the context of the current user after the victim opens a maliciously crafted document. The CVSS 3.1 base score is 7.8 (AV:L/AC:L/PR:N/UI:R) with high impact to confidentiality, integrity, and availability, and requires user interaction. There is no public exploit identified at time of analysis and it is not listed in CISA KEV, but a vendor patch is available via MSRC.
Local code execution in Microsoft Office (Microsoft 365 Apps for Enterprise, Office 2016/2019, and Office LTSC 2021/2024) arises from a heap-based buffer overflow (CWE-122) that an attacker triggers by convincing a user to open a maliciously crafted Office document. Successful exploitation yields full code execution in the context of the current user, with high impact to confidentiality, integrity, and availability. There is no public exploit identified at time of analysis and it is not listed in CISA KEV; SSVC rates current exploitation as none.
Local code execution in Microsoft Office Excel (across Microsoft 365 Apps for Enterprise, Office 2019, Office LTSC 2021/2024, and their macOS equivalents) arises from a use-after-free (CWE-416) memory-corruption flaw triggered when a user opens a maliciously crafted spreadsheet. The CVSS vector (AV:L/AC:L/PR:N/UI:R) indicates an unauthenticated attacker can achieve full confidentiality, integrity, and availability impact but requires the victim to open a file, making it a classic phishing-delivered client-side bug. There is no public exploit identified at time of analysis and it is not listed in CISA KEV, though Excel memory-corruption bugs are historically attractive targets.
Local code execution in Microsoft Office (including Microsoft 365 Apps for Enterprise, Office 2016/2019, and Office LTSC 2021/2024) stems from a use-after-free memory-corruption flaw (CWE-416). An attacker who convinces a user to open a specially crafted Office document can execute arbitrary code in the context of the current user, gaining full confidentiality, integrity, and availability impact. Exploitation requires user interaction (opening a malicious file) and there is no public exploit identified at time of analysis.
Local arbitrary code execution in Microsoft Excel arises from a heap-based buffer overflow (CWE-122) triggered when a user opens a maliciously crafted spreadsheet; successful exploitation runs attacker code in the context of the current user across desktop Office builds (Excel 2016, Office 2019, LTSC 2021/2024, Microsoft 365 Apps) on both Windows and Mac, as well as Office Online Server. The flaw carries CVSS 7.8 with high confidentiality, integrity, and availability impact but requires user interaction (opening the file). No public exploit identified at time of analysis, and it is not listed in CISA KEV; a vendor patch is available from Microsoft.
Local code execution in Microsoft Excel (2016, Office 2019, Office LTSC 2021/2024, Microsoft 365 Apps, Office for Mac, and Office Online Server) arises from a use-after-free memory corruption (CWE-416) that an attacker triggers when a victim opens a maliciously crafted spreadsheet. Exploitation runs code in the context of the current user and requires user interaction (opening the file), with no public exploit identified at time of analysis. This is a locally-exploited, phishing-delivered class of bug typical of Office file-format handlers, patched by Microsoft via MSRC.
Local code execution in Microsoft Excel (and the broader Office family through Microsoft 365 Apps, Office 2019/2021/2024 LTSC, Office for Mac, and Office Online Server) arises from a stack-based buffer overflow (CWE-121) triggered when a user opens a maliciously crafted spreadsheet. An attacker who convinces a victim to open the file runs arbitrary code in the security context of the current user, with high impact to confidentiality, integrity, and availability. There is no public exploit identified at time of analysis and the vulnerability is not listed in CISA KEV; Microsoft has released a patch.
Local code execution in Microsoft Excel (including Microsoft 365 Apps, Office 2016/2019, Office LTSC 2021/2024, and Office for Mac) arises from a heap-based buffer overflow (CWE-122) triggered when a victim opens a maliciously crafted spreadsheet, letting an attacker run arbitrary code in the user's context. The CVSS 3.1 score is 7.8 (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H), reflecting that exploitation needs user interaction but no prior privileges once the file is opened. There is no public exploit identified at time of analysis, and it is not listed in CISA KEV; Microsoft has released a patch.
Local privilege escalation in Microsoft Office Click-To-Run (Microsoft 365 Apps, Office 2019, Office LTSC 2021/2024) allows an authenticated local attacker to elevate privileges due to improper access control in the update/servicing component. A successful attack results in total compromise of confidentiality, integrity, and availability with a scope change beyond the vulnerable component. There is no public exploit identified at time of analysis and EPSS exploitation probability is very low (0.04%, 12th percentile), but the vendor rates technical impact as total.
Local privilege escalation in Microsoft Office Click-To-Run (the servicing/update engine behind Microsoft 365 Apps, Office 2019, and Office LTSC 2021/2024) lets an already-authenticated low-privileged user escalate to higher privileges on the host due to insufficiently granular access control (CWE-1220). The CVSS 3.1 vector (AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H) shows a scope change with total confidentiality, integrity, and availability impact, meaning a successful attacker crosses a security boundary from the Office servicing context to the wider system. There is no public exploit identified at time of analysis, EPSS is very low (0.04%), and CISA SSVC rates exploitation as 'none', so this is a serious-but-not-actively-exploited local EoP that should be patched on the normal accelerated cycle.
Local privilege elevation in Microsoft Office Click-To-Run (affecting Microsoft 365 Apps for Enterprise, Office 2019, and Office LTSC 2021/2024) lets an already-authenticated local attacker exploit a use-after-free memory corruption to gain higher privileges on the host. Microsoft has released a patch, and there is no public exploit identified at time of analysis; EPSS probability is negligible (0.04%) and CISA SSVC records exploitation status as none, indicating this is a patch-on-schedule issue rather than an emergency.
Local code execution in Microsoft Word (and Office 2016/2019, LTSC 2021/2024, 365 Apps, Office for Mac, and SharePoint Server) stems from an untrusted pointer dereference (CWE-822) that lets an attacker run arbitrary code with the victim's privileges when a malicious file is processed. Microsoft rates it CVSS 8.4 with total technical impact (high confidentiality, integrity, and availability loss). There is no public exploit identified at time of analysis, EPSS is very low (0.04%), and CISA SSVC marks exploitation as none and not automatable, indicating no observed real-world attacks yet.
Arbitrary code execution in Microsoft Excel (and the broader Office family through Microsoft 365 Apps, Office 2019, LTSC 2021/2024, Office for Mac, and Office Online Server) is possible when a user opens a maliciously crafted spreadsheet that triggers a heap-based buffer overflow (CWE-122), running attacker code in the context of the current user. There is no public exploit identified at time of analysis and the EPSS probability is very low (0.06%, 18th percentile), but the technical impact is total (full confidentiality, integrity, and availability loss). Microsoft has released patches; exploitation requires the victim to open a file, so it is a phishing/social-engineering-driven local vulnerability rather than a remotely wormable one.
Local code execution in Microsoft Office Word (2016, 2019, LTSC 2021/2024, Microsoft 365 Apps, and Office LTSC for Mac 2021/2024) arises from a use-after-free memory-corruption flaw that lets an attacker run arbitrary code in the context of the user who opens a maliciously crafted document. Microsoft has released a patch, and no public exploit has been identified at time of analysis; EPSS is very low at 0.06% (18th percentile) and CISA SSVC records no known exploitation.
Local code execution in Microsoft Office Excel (Excel 2016, Office 2019/LTSC 2021/2024, Microsoft 365 Apps, Office for Mac, and Office Online Server) arises from a use-after-free memory corruption flaw that an attacker triggers by convincing a user to open a specially crafted spreadsheet. Successful exploitation yields full compromise of the current user's context (high confidentiality, integrity, and availability impact). There is no public exploit identified at time of analysis, EPSS is very low (0.06%), and CISA SSVC records exploitation status as none, indicating this is a patch-in-cycle issue rather than an active threat.
Local code execution in Microsoft Office (2016, 2019, LTSC 2021/2024, 365 Apps, and Office LTSC for Mac 2021/2024) arises from a use-after-free memory corruption (CWE-416) that lets an attacker run arbitrary code with the victim's privileges. Microsoft's CVSS vector rates it AV:L/PR:N/UI:N (base 8.4) with total technical impact, though there is no public exploit identified at time of analysis and EPSS exploitation probability is negligible at 0.04%. A vendor patch is available from Microsoft (MSRC update guide).
Local privilege elevation in Microsoft Office (Microsoft 365 Apps for Enterprise, Office 2019, and Office LTSC 2021/2024) stems from a use-after-free memory corruption flaw (CWE-416) that an already-authorized local attacker can trigger to gain higher privileges on the host. Microsoft has released a patch, and there is no public exploit identified at time of analysis; EPSS is very low (0.04%, 13th percentile) and CISA SSVC records exploitation as none, indicating no observed in-the-wild activity. The CVSS 3.1 base score is 7.8 with total technical impact (C:H/I:H/A:H) once triggered.
Local code execution in Microsoft Word (and the Office suites that bundle it - Office 2016/2019, LTSC 2021/2024, Microsoft 365 Apps, and Office LTSC for Mac 2021/2024) stems from a use-after-free memory-corruption defect that lets an attacker run arbitrary code in the context of the current user, typically by having the victim process a crafted document. Microsoft (the reporting party) has released a fix; there is no public exploit identified at time of analysis and EPSS is very low (0.04%, 14th percentile). SSVC rates exploitation as none but technical impact as total, so this is a patch-on-schedule item rather than an emergency.
Local code execution in Microsoft Word (Office 2016 through Office LTSC 2024, Microsoft 365 Apps, and Office for Mac) results from a type-confusion flaw (CWE-843) that lets an unauthorized attacker run arbitrary code with the victim's privileges. Microsoft rates it CVSS 8.4 with total technical impact, but there is no public exploit identified at time of analysis and EPSS exploitation probability is low (0.15%, 35th percentile). CISA SSVC records exploitation status as none and the issue is not automatable, indicating no observed in-the-wild activity.
Local code execution in Microsoft Office (2016, 2019, LTSC 2021/2024, 365 Apps for Enterprise, Office for Android, and Office LTSC for Mac 2021/2024) stems from a heap-based buffer overflow that lets an attacker run arbitrary code with the victim's privileges. The flaw was reported by Microsoft, a vendor patch is available, and there is no public exploit identified at time of analysis; EPSS is very low at 0.04% and CISA SSVC records exploitation as none. Impact is total (full confidentiality, integrity, and availability loss) but exploitation is not automatable and, per typical Office file-parsing bugs, hinges on processing attacker-supplied content.
Code execution in Microsoft Word - across Microsoft 365 Apps for Enterprise, Office LTSC 2021, and Office LTSC 2024 - is achievable when a victim opens an attacker-crafted document containing a malformed numeric field that triggers an integer truncation flaw (CWE-197) inside the Word parsing path. The vulnerability carries a CVSS 3.1 base score of 8.8 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H), meaning no authentication or prior access is needed, but successful exploitation is gated by mandatory user interaction: the target must open or preview a malicious file, so delivery depends on phishing, web download, or similar social-engineering vectors. At time of analysis there is no public exploit identified, and Microsoft has published a fix via its MSRC update guide, so fully patched installations are not exposed.
Remote code execution in Microsoft Word affects Microsoft 365 Apps for Enterprise, Microsoft Office LTSC 2021, and Microsoft Office LTSC 2024, where a heap-based buffer overflow (CWE-122) is triggered when a victim opens or previews a specially crafted document. The CVSS vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) shows an unauthenticated remote attacker needs no credentials, but the UI:R metric confirms victim interaction is mandatory, making delivery dependent on phishing or file-sharing social engineering. Successful exploitation yields code execution at the privilege level of the user who opened the file, with high confidentiality, integrity, and availability impact, but no scope change or privilege escalation beyond that user's context; no public exploit identified at time of analysis, and a vendor patch is available from Microsoft. This is a credible patching priority despite the absence of exploitation telemetry.
Remote code execution in Microsoft Office Word (Microsoft 365 Apps for Enterprise, Office LTSC 2021/2024, and the corresponding macOS builds) allows an unauthenticated attacker to run arbitrary code in the security context of a victim who opens a specially crafted document. The flaw is a heap-based buffer overflow reachable over the network, and because it requires only low attack complexity and no privileges (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, base 8.8), the sole barrier to exploitation is the user-interaction requirement - the victim must open the malicious Word file, which is the primary limiting factor. No public exploit code has been identified at time of analysis, and there is no confirmed actively exploited (CISA KEV) status, but Microsoft has published a vendor patch, so this should be treated as a genuine high-priority, patch-now item rather than an emergency.
Remote code execution in Microsoft Outlook is possible through a heap-based buffer overflow that an unauthenticated, network-based attacker can trigger by convincing a victim to open or preview a crafted email message or Office document. The vulnerability affects Microsoft 365 Apps for Enterprise, Office LTSC 2021/2024, and Office 365 for Mac, but a vendor patch is available. Exploitation carries a high attack complexity due to required heap grooming and memory-layout control, and no public exploit code or active exploitation (CISA KEV) has been identified at time of analysis.
Remote code execution in Microsoft Word affects Microsoft 365 Apps for Enterprise, Office LTSC 2021, and Office LTSC 2024, where a crafted document triggers a heap-based buffer overflow and lets an unauthenticated attacker run code in the context of the victim. Exploitation is network-delivered (email or web) but requires the user to open or preview the malicious file (CVSS 3.1 8.8, AV:N/AC:L/PR:N/UI:R); no elevated privileges are needed on the target. No public exploit code has been identified at time of analysis, and Microsoft has released a vendor patch per its advisory; the severity and default-configuration reachability make this a real patching priority despite the user-interaction dependency.
Remote code execution in Microsoft Excel is possible when a user opens or previews a specially crafted spreadsheet, which triggers a use-after-free during file parsing and lets an unauthenticated attacker run code in the context of the victim. The flaw carries a CVSS of 8.8 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) and affects Microsoft 365 Apps for Enterprise, Office LTSC 2021/2024, the Mac LTSC and Office 365 for Mac builds, and Office Online Server, with no attacker authentication required but mandatory user interaction (UI:R) - meaning successful exploitation depends on social engineering rather than automatic server-side triggering, and Protected View plus Mark-of-the-Web warnings can interrupt the chain. At time of analysis there is no confirmed active exploitation (no CISA KEV listing) and no public exploit code identified, and Microsoft has published a vendor fix via its MSRC update guide; risk is high but manageable through prompt patching and the existing Office security defaults.
Remote code execution in Microsoft Word affects Microsoft 365 Apps for Enterprise, Office LTSC 2021/2024, and Office for Mac/LTSC for Mac editions, allowing an unauthenticated attacker to execute arbitrary code by convincing a victim to open a specially crafted document (UI:R). The stack-based buffer overflow (CWE-121) requires no privileges or non-default configuration (PR:N, AC:L), making it a high-priority target for social-engineering campaigns, though no public exploit code has been identified at time of analysis. Patch available per vendor advisory from the Microsoft Security Response Center.
Heap-based buffer overflow in Microsoft Office (Windows and macOS builds: Microsoft 365 Apps for Enterprise, Office LTSC 2021/2024, and Office 365/LTSC for Mac) allows unauthenticated remote attackers to execute arbitrary code when a victim opens a crafted document. Exploitation requires user interaction (UI:R in the CVSS vector) and is not zero-click, executing with the victim user's privileges rather than SYSTEM. No public exploit has been identified at time of analysis, and a vendor patch is available per the Microsoft advisory (CVE-2026-108444).
Remote code execution in Microsoft Word (part of Microsoft 365 Apps for Enterprise, Office 365 for Mac, and Office LTSC 2021/2024) allows unauthenticated attackers to execute arbitrary code in the context of the victim who opens a crafted document. The vulnerability is an off-by-one error (CWE-193) in the Word parser that can corrupt memory, and no public exploit code or active exploitation has been identified at time of analysis. Microsoft has released a patch via its MSRC update guide.
Use-after-free memory corruption in Microsoft Office Word enables remote attackers to execute arbitrary code with the privileges of the user who opens a maliciously crafted document. The flaw is unauthenticated (PR:N) but requires the victim to open the document (UI:R), and affects Microsoft 365 Apps for Enterprise, Office LTSC 2021/2024, and the corresponding macOS editions (Office 365 for Mac, Office LTSC for Mac 2021/2024). No public exploit code has been identified at time of analysis and there is no confirmed active exploitation (CISA KEV); vendor patches are available, making this a genuine high-priority patching target rather than an emergency.
Heap-based buffer overflow in Microsoft Word (CWE-122) enables remote code execution when a user opens an attacker-crafted document in an affected Office build - Microsoft 365 Apps for Enterprise, Office LTSC 2021/2024, or the Mac equivalents - and rates CVSS 8.8 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). Exploitation is unauthenticated (PR:N) but requires user interaction (UI:R): the malicious file must actually be opened, so delivery depends on phishing or document-sharing lures rather than autonomous network exploitation, and Protected View or Mark-of-the-Web sandboxing on untrusted documents can block the trigger until the user dismisses it. Vendor patches are available via the Microsoft Security Response Center update guide; no public exploit code or confirmed active exploitation was identified at time of analysis, though the high confidentiality, integrity, and availability impact across all supported Office channels warrants prompt patching.
Stack-based buffer overflow in Microsoft Word permits remote code execution in affected Microsoft 365 Apps for Enterprise, Microsoft Office 365 for Mac, and Office LTSC 2021/2024 (including Mac editions) when a victim opens a maliciously crafted document. The vulnerability is unauthenticated from the attacker's perspective but requires user interaction (UI:R), so delivery typically depends on phishing or social engineering, and no public exploit identified at time of analysis or CISA KEV confirmation is available in the provided data. Patch available per vendor advisory via Microsoft's MSRC update guide.
Heap-based memory corruption in Microsoft Word lets a remote, unauthenticated attacker execute arbitrary code in the security context of the user who opens a specially crafted Word document. Affected software includes Microsoft 365 Apps for Enterprise, Microsoft Office LTSC 2021 and 2024, and the corresponding Office LTSC/Office 365 for Mac builds referenced in the CPE list; exploitation is not automatic, since the victim must open the malicious file (UI:R), but no credentials or special configuration are required otherwise. Microsoft has published a security update, and no public exploit code was identified at time of analysis.
Heap-based buffer overflow in Microsoft Office Word allows unauthenticated remote attackers to execute code on vulnerable systems when a user opens a crafted document, affecting Microsoft 365 Apps for Enterprise, Office LTSC 2021, and Office LTSC 2024. The attack requires user interaction (opening a malicious file) and executes code in the context of the opening user without privilege escalation, resulting in a CVSS score of 8.8. No public exploit code or active exploitation has been identified, and a vendor patch is available; this is a high-priority vulnerability but not an emergency based on current signals.
Security-feature bypass in Microsoft Office Word - including the wider Microsoft 365 Apps for Enterprise and Office LTSC 2021/2024 families on Windows and macOS - lets an attacker defeat a protection mechanism such as Protected View, mark-of-the-web enforcement, or a trust/macro prompt by getting a victim to open or preview a crafted document. No attacker credentials or prior access are required (CVSS PR:N), but exploitation is local (AV:L) and depends on the target user interacting with the file (UI:R); a successful bypass yields high confidentiality, integrity, and availability impact for a 7.8 High severity rating. No public exploit code or confirmed active exploitation was identified at time of analysis, and Microsoft has released a patched update through its Update Guide (https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-108433).
Heap-based buffer overflow in Microsoft Word allows remote, unauthenticated attackers to execute arbitrary code when a user opens a maliciously crafted document. Affected products include Microsoft 365 Apps for Enterprise, Office LTSC 2021/2024, and their macOS editions, with a CVSS score of 8.8; no public exploit identified at time of analysis, and CISA KEV does not list active exploitation, though high impact and low attack complexity make this a genuine high-priority issue. The primary limiting factor is the required user interaction to open the weaponized file, and code runs with the victim's privileges rather than SYSTEM.
Remote code execution in Microsoft Word affects Microsoft 365 Apps for Enterprise, Office LTSC 2021 and 2024, Office LTSC for Mac 2021 and 2024, and Office 365 for Mac when a user opens or previews a specially crafted document. The flaw is a stack-based buffer overflow (CWE-121) rated 8.8, reachable by unauthenticated remote attackers with PR:N but requiring user interaction with UI:R; successful exploitation yields code execution with the victim user’s privileges. A vendor patch is available, and no public exploit has been identified at time of analysis.
Heap-based buffer overflow in Microsoft Word (CWE-122) allows an unauthorized attacker to execute code in the context of the victim when a specially crafted Word document is opened, earning a CVSS 3.1 base score of 8.8 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). The flaw affects Word as shipped in Microsoft 365 Apps for Enterprise, Office 365 for Mac, and Office LTSC 2021 and 2024 on both Windows and macOS. Exploitation is unauthenticated from the attacker's side but requires the victim to open an attacker-supplied file, so success depends on social engineering and on getting past Protected View or Mark-of-the-Web warnings for documents downloaded from the internet. No public exploit code was identified at time of analysis and the issue is not listed as confirmed actively exploited (CISA KEV); patch data indicates a vendor fix is available via the Microsoft Security Response Center advisory.
Heap-based buffer overflow in Microsoft Word (Microsoft 365 Apps for Enterprise, Office LTSC 2021 and Office LTSC 2024) allows a remote, unauthenticated attacker to execute code in the context of the victim when a crafted document is opened, matching a CVSS 3.1 vector of AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H (8.8 High). Exploitation is not interaction-free: the vector's UI:R component and the assessed conditions require file delivery plus a user open action, so Protected View and Mark-of-the-Web prompts materially limit real-world success. No public exploit code or active exploitation has been identified at time of analysis, but a vendor patch is available from Microsoft and this remains a genuine priority for patching.
Heap-based buffer overflow in Microsoft Word allows remote unauthenticated attackers to execute arbitrary code when a victim opens a specially crafted document. Affects Microsoft 365 Apps for Enterprise and Office LTSC 2021/2024. No public exploit identified at time of analysis, but this is a genuine high-priority issue given the potential for code execution and widespread product deployment; exploitation requires user interaction (opening or previewing the malicious file).
Heap-based memory corruption in Microsoft Word - affecting Microsoft 365 Apps for Enterprise, Microsoft Office LTSC 2021, and Microsoft Office LTSC 2024 - lets a remote, unauthenticated attacker execute arbitrary code in the context of the victim, but only when that victim opens or previews a specially crafted Word document. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, base 8.8) confirms the trigger is entirely dependent on user interaction, so there is no zero-click or server-side path; no public exploit code or confirmed active exploitation has been identified at time of analysis, and a vendor patch is available. That combination - high technical severity but a required user action and an available fix - makes this a high-priority vulnerability rather than an emergency.
A heap-based buffer overflow in Microsoft Word's document-parsing code lets an unauthenticated remote attacker execute arbitrary code when a victim opens a maliciously crafted Word file, affecting Microsoft 365 Apps for Enterprise and Office LTSC 2021/2024. The attack is network-deliverable (typically a phishing attachment or downloaded document) but cannot trigger without user interaction, since the victim must open or preview the file; successful exploitation runs code in that user's security context rather than SYSTEM. No public exploit code and no confirmed active exploitation were identified at time of analysis, so this is a high-priority patching item - rated 8.8 with the vendor patch already available - rather than an emergency zero-day response.
Remote code execution in Microsoft Outlook (delivered through Microsoft 365 Apps for Enterprise, Office LTSC 2021, and Office LTSC 2024) arises from an integer overflow/wraparound that an unauthorized attacker can trigger by delivering a specially crafted message or file to an affected client. The vector is network-reachable, unauthenticated (PR:N), and lists no user interaction (UI:N), but high attack complexity (AC:H) means the attacker must satisfy specific, not fully controllable conditions to convert the wraparound into reliable memory corruption and code execution; CISA SSVC accordingly marks the flaw non-automatable and no exploitation has been observed. Signals are mixed and point to a serious-but-not-emergency priority: EPSS is only 0.35% (26th percentile), no public exploit code or KEV listing exists, technical impact is total if successful, and Microsoft has released a vendor patch.
Heap-based buffer overflow in Microsoft Outlook can lead to arbitrary code execution when a user opens or otherwise acts on a crafted email or Office item, affecting Microsoft 365 Apps for Enterprise, Office LTSC 2021, and Office LTSC 2024. The flaw carries a CVSS score of 7.8 with a local attack vector, no privileges required, and mandatory user interaction, and Microsoft has published a vendor update. No public exploit has been identified at time of analysis; EPSS is 0.44% (36th percentile) and CISA SSVC rates exploitation as none and automatable as no, making this a this-week priority rather than an emergency.
Information disclosure via improper input validation in Microsoft Office Word enables unauthenticated remote attackers to extract sensitive data across a broad product surface spanning Word 2016, Office 2019, multiple LTSC releases, and Microsoft 365 Apps for Enterprise on both Windows and macOS. The vendor-assigned CVSS vector (AV:N/AC:L/PR:N/UI:N) indicates no user interaction is required, though SSVC's 'Automatable: no' designation creates measurable tension with that assessment. No public exploit has been identified at time of analysis, and EPSS at 0.54% (43rd percentile) reflects low near-term exploitation probability despite the CVSS 7.5 rating.
Remote code execution via use-after-free in Microsoft Excel affects multiple product lines including Microsoft 365 Apps for Enterprise, Excel 2016, and Office 2019/LTSC 2021/LTSC 2024. An unauthenticated remote attacker can exploit this memory corruption flaw by convincing a target user to open a specially crafted Excel workbook, resulting in arbitrary code execution under the context of the victim process. No public exploit code has been identified at time of analysis and this vulnerability is not listed in the CISA KEV catalog, though the low-complexity, no-privilege network attack vector makes it an attractive phishing payload candidate.
Local code execution in Microsoft Office Excel (across Microsoft 365 Apps for Enterprise, Office LTSC 2021/2024, and their macOS counterparts) arises from a heap-based buffer overflow (CWE-122) triggered when a victim opens a maliciously crafted spreadsheet. An unauthorized attacker can achieve arbitrary code execution in the context of the current user, gaining high confidentiality, integrity, and availability impact. There is no public exploit identified at time of analysis and the CVE is not listed in CISA KEV, but a vendor patch is available from Microsoft.
Local code execution in Microsoft Office Excel (2016, 2019, LTSC 2021/2024, Microsoft 365 Apps, Office for Mac, and Office Online Server) allows an attacker to run arbitrary code in the context of the current user when a victim opens a maliciously crafted spreadsheet. The flaw stems from use of an uninitialized resource (CWE-908) and carries a CVSS 7.8; it requires user interaction (opening the file) and no prior privileges. No public exploit identified at time of analysis, and it is not listed in CISA KEV, but a vendor patch is available.
Local code execution in Microsoft Excel (Office 2016 through Office LTSC 2024, Microsoft 365 Apps, Office for Mac, and Office Online Server) allows an attacker to run arbitrary code when a victim opens a maliciously crafted spreadsheet. The flaw is a heap-based buffer overflow (CWE-122) triggered during file parsing, giving full confidentiality, integrity, and availability impact in the user's context. No public exploit identified at time of analysis, and it is not listed in CISA KEV, so exploitation currently appears theoretical rather than active.
Information disclosure in Microsoft Excel (across Microsoft 365 Apps, Office 2016/2019, Office LTSC 2021/2024, Office for Mac, and Office Online Server) lets an attacker read out-of-bounds heap memory when a victim opens a maliciously crafted spreadsheet, potentially leaking sensitive process memory. The flaw (CWE-125, CVSS 7.1) requires local user interaction and no privileges, but is not remotely triggerable without the user opening the file. There is no public exploit identified at time of analysis, EPSS is low at 0.30%, and CISA SSVC rates exploitation as none.
Arbitrary code execution in Microsoft Office Excel arises from a use-after-free (CWE-416) memory-corruption flaw affecting Microsoft 365 Apps for Enterprise, Office 2019, Office LTSC 2021/2024, Office for Mac, and Office Online Server. The CVSS 3.1 vector (AV:L/UI:R) makes this a user-interaction-dependent, locally-scoped issue: a victim must open a maliciously crafted Excel workbook, after which the attacker gains code execution in the user's security context. No public exploit is identified at time of analysis and it is not listed in CISA KEV, but a vendor patch is available.
Arbitrary code execution in Microsoft PowerPoint (and the broader Microsoft Office/365 suite on Windows and macOS) arises from a heap-based buffer overflow (CWE-122) triggered when a victim opens a maliciously crafted presentation file. An attacker who cannot log in to the target can still run code in the context of the current user by convincing that user to open the booby-trapped file, giving full confidentiality, integrity, and availability impact on the affected host. Microsoft has released a patch; there is no public exploit identified at time of analysis and the flaw is not listed in CISA KEV.
Local code execution in Microsoft Office PowerPoint (including Microsoft 365 Apps, Office 2019, Office LTSC 2021/2024, and their macOS variants) arises from a heap-based buffer overflow triggered when a victim opens a maliciously crafted presentation file. Successful exploitation runs attacker-controlled code with the privileges of the current user, yielding full confidentiality, integrity, and availability impact. There is no public exploit identified at time of analysis and the issue is not listed in CISA KEV, but Microsoft has released a patch.
Local code execution in Microsoft Office PowerPoint (CWE-122 heap-based buffer overflow) lets an unauthorized attacker run arbitrary code when a victim opens a maliciously crafted presentation file. The flaw affects a broad Office footprint - PowerPoint 2016, Office 2019, Office LTSC 2021/2024, Microsoft 365 Apps for Enterprise, and multiple Office for Mac builds - and requires user interaction (opening the file) but no prior privileges. A vendor patch is available via MSRC; there is no public exploit identified at time of analysis and it is not listed in CISA KEV.
Local code execution in Microsoft Word (Office 2016/2019, Microsoft 365 Apps, Office LTSC 2021/2024) arises from a heap-based buffer overflow triggered when a victim opens a maliciously crafted document. An attacker who convinces a user to open a booby-trapped file can run arbitrary code in that user's context, achieving full compromise of confidentiality, integrity, and availability on the host. No public exploit identified at time of analysis and the flaw is not listed in CISA KEV, though a vendor patch is available per Microsoft's MSRC advisory.
Local code execution in Microsoft Office Word (CWE-416 use-after-free) allows an unauthorized attacker to run arbitrary code in the context of the current user when a victim opens a maliciously crafted document. The flaw affects a broad Office footprint including Microsoft 365 Apps for Enterprise, Office 2019, Office LTSC 2021/2024 (Windows and Mac), and related SharePoint Server products that process Word documents. Microsoft has released a patch; no public exploit has been identified at time of analysis, and neither KEV nor EPSS/POC signals were provided in the input.
Local code execution in Microsoft Office (2016, 2019, LTSC 2021/2024, 365 Apps for Enterprise, and Office for Mac) arises from a heap-based buffer overflow (CWE-122) that an attacker triggers by getting a victim to open a maliciously crafted Office document. Rated CVSS 7.8 with high impact to confidentiality, integrity, and availability, exploitation requires user interaction but no prior authentication or privileges. There is no public exploit identified at time of analysis, and it is not listed in CISA KEV, but Microsoft has released a patch via the MSRC update guide.
Local code execution in Microsoft Office (Microsoft 365 Apps, Office 2016/2019, LTSC 2021/2024, and Office for Mac) arises from a heap-based buffer overflow (CWE-122) that an attacker triggers by convincing a user to open a maliciously crafted document. The CVSS 3.1 score is 7.8 (AV:L/AC:L/PR:N/UI:R) with high impact to confidentiality, integrity, and availability, meaning code runs in the context of the current user. No public exploit identified at time of analysis, and it is not listed in CISA KEV; a vendor patch is available via MSRC.
Local code execution in Microsoft Office Word (Microsoft 365 Apps, Office 2019/LTSC 2021/2024, Word 2016, and the macOS builds) arises from a stack-based buffer overflow triggered when a victim opens a maliciously crafted document. The CVSS 3.1 vector (AV:L/AC:L/PR:N/UI:R) shows an unauthenticated attacker needs no privileges but does require user interaction, and successful exploitation yields full confidentiality, integrity, and availability impact in the user's security context. There is no public exploit identified at time of analysis and it is not listed in CISA KEV, but Microsoft has released a patch.
Arbitrary code execution in Microsoft Office Excel arises from a heap-based buffer overflow (CWE-122) that an attacker triggers when a victim opens a maliciously crafted spreadsheet, running code in the security context of the current user. The flaw spans a broad Office footprint including Microsoft 365 Apps for Enterprise, Excel 2016, Office 2019, Office LTSC 2021/2024, the macOS Office editions, and Office Online Server. There is no public exploit identified at time of analysis, and it is not listed in CISA KEV; the CVSS 7.8 rating reflects high impact gated by required user interaction.
Information disclosure in Microsoft Office Excel (2016, Office 2019, LTSC 2021/2024, Microsoft 365 Apps, Office for Mac, and Office Online Server) lets an attacker read out-of-bounds memory when a victim opens a maliciously crafted spreadsheet, potentially leaking sensitive process data such as memory contents, pointers, or credentials. Rated CVSS 7.1 with a local attack vector requiring user interaction, the flaw stems from a CWE-125 out-of-bounds read in Excel's file parser. There is no public exploit identified at time of analysis and it is not listed in CISA KEV, but the ubiquity of Excel and Microsoft's confirmed patch make prompt patching important.
Local code execution in Microsoft Excel arises from a heap-based buffer overflow (CWE-122) that an attacker triggers by luring a victim into opening a maliciously crafted spreadsheet, yielding attacker code in the user's security context. It affects a broad Office family including Microsoft 365 Apps for Enterprise, Excel 2016, Office 2019, Office LTSC 2021/2024, the macOS editions, and Office Online Server. The CVSS 3.1 base score is 7.8 and the vector requires user interaction (UI:R); there is no public exploit identified at time of analysis and it is not listed in CISA KEV.
Local code execution in Microsoft Office Excel (across Microsoft 365 Apps, Office 2016/2019, LTSC 2021/2024, Office for Mac, and Office Online Server) stems from a heap-based buffer overflow (CWE-122) that an attacker triggers when a victim opens a maliciously crafted spreadsheet. Rated CVSS 7.8 with no privileges required but mandatory user interaction, successful exploitation yields full confidentiality, integrity, and availability impact in the context of the victim user. There is no public exploit identified at time of analysis and it is not on the CISA KEV list, but Microsoft has released a patch.
Local code execution in Microsoft Word (part of Microsoft 365 Apps, Office 2019, Office LTSC 2021/2024, and Office for Mac) stems from a double free of heap memory (CWE-415) that lets an unauthorized attacker run arbitrary code when a victim opens a malicious document. The flaw was reported by Microsoft, carries CVSS 7.8, and a vendor patch is available; there is no public exploit identified at time of analysis and it is not listed in CISA KEV. Because exploitation requires the target to open a crafted file (UI:R), it is a user-interaction-gated client-side RCE rather than a remotely-triggerable service bug.
Arbitrary code execution in Microsoft Office Word (and the broader Office/365/SharePoint family) arises from a stack-based buffer overflow (CWE-121) that an attacker triggers when a victim opens a maliciously crafted document. The CVSS 3.1 vector (AV:L/UI:R) confirms this is a file-borne, local-context flaw requiring the user to open attacker-supplied content, yielding full confidentiality, integrity, and availability impact in the user's session. No public exploit identified at time of analysis, and it is not listed in CISA KEV; Microsoft has released a patch via MSRC.
Local code execution in Microsoft Office Excel (Microsoft 365 Apps, Office 2019, Office LTSC 2021/2024, Office for Mac, Office Online Server) arises from an out-of-bounds read (CWE-125) that an attacker weaponizes by luring a victim into opening a crafted spreadsheet, yielding code execution in the user's security context. The flaw carries a CVSS 7.8 (AV:L/AC:L/PR:N/UI:R) and requires no privileges but does require user interaction. Microsoft has released a patch; there is no public exploit identified at time of analysis and it is not listed in CISA KEV.
Arbitrary code execution in Microsoft Excel (spanning Microsoft 365 Apps, Office 2016/2019, Office LTSC 2021/2024, Office for Mac, and Office Online Server) allows an unauthorized attacker to run code in the victim's context by tricking them into opening a maliciously crafted spreadsheet. The flaw is a heap-based buffer overflow (CWE-122) that executes with the local user's privileges once the file is opened. Microsoft has released a patch; there is no public exploit identified at time of analysis and the CVE is not listed in CISA KEV.
Local code execution in Microsoft Office Word (via a stack-based buffer overflow, CWE-121) lets an attacker run arbitrary code in the context of the user who opens a maliciously crafted document. The flaw affects Microsoft 365 Apps for Enterprise, Office 2019, Office LTSC 2021/2024 (including Mac editions), and the Word component shared with SharePoint Server 2016/2019/Subscription Edition. No public exploit identified at time of analysis, and it is not listed in CISA KEV; exploitation requires the victim to open the attacker's file (UI:R).
Local code execution in Microsoft Excel (Microsoft 365 Apps, Office 2019, Office LTSC 2021/2024, Office for Mac, and Office Online Server) arises from an out-of-bounds read (CWE-125) triggered when a victim opens a maliciously crafted spreadsheet. CVSS 7.8 with high impact to confidentiality, integrity, and availability; no public exploit identified at time of analysis. Exploitation requires user interaction (opening the file) but no prior authentication or privileges on the target beyond the ability to induce the user to open the document.
Local arbitrary code execution in Microsoft Excel arises from a buffer over-read (CWE-126) triggered when a victim opens a maliciously crafted spreadsheet, letting an attacker run code in the context of the current user. The flaw spans Office 2016/2019, Microsoft 365 Apps, Office LTSC 2021/2024 (Windows and Mac) and Office Online Server; a vendor patch is available via MSRC. No public exploit has been identified at time of analysis, and the CVSS 7.8 (AV:L/UI:R) rating reflects that user interaction is required.
Local code execution in Microsoft Office (2016, 2019, LTSC 2021/2024, Microsoft 365 Apps for Enterprise, and Office for Mac) arises from a heap-based buffer overflow (CWE-122) triggered when a user opens a maliciously crafted document. Rated CVSS 7.8 (AV:L/UI:R), an attacker who convinces a victim to open a weaponized file can run arbitrary code in the context of the current user. Microsoft has released a patch; there is no public exploit identified at time of analysis and it is not listed in CISA KEV.
Local code execution in Microsoft Excel (and the broader Office 2016/2019/LTSC 2021/2024, Microsoft 365 Apps, Office for Mac, and Office Online Server family) results from a stack-based buffer overflow triggered when a victim opens a maliciously crafted spreadsheet. An attacker who convinces a user to open a booby-trapped file can run arbitrary code in the context of that user, with full confidentiality, integrity, and availability impact. There is no public exploit identified at time of analysis and it is not on CISA KEV, but the ubiquity of Excel and Microsoft's own advisory make this a routine patch-Tuesday-class priority.
Arbitrary local code execution in Microsoft Office Excel (spanning Microsoft 365 Apps for Enterprise, Excel 2016, Office 2019, Office LTSC 2021/2024, the Office for Mac editions, and Office Online Server) lets an attacker run code in the current user's context when a victim opens a maliciously crafted spreadsheet. The flaw is an untrusted pointer dereference (CWE-822) triggered during file parsing; it requires user interaction but no prior privileges. No public exploit is identified at time of analysis, and a vendor patch is available from Microsoft (MSRC).
Local code execution in Microsoft Word (and the wider Microsoft Office / Microsoft 365 Apps family) lets an unauthorized attacker run arbitrary code when a victim opens a maliciously crafted Word document that triggers a heap-based buffer overflow. All impacted SKUs - Microsoft 365 Apps for Enterprise, Office 2019, Office LTSC 2021/2024, the macOS Office builds, and SharePoint Server (which renders Office documents server-side) - are affected, and Microsoft has released a patch. There is no public exploit identified at time of analysis and the flaw is not listed in CISA KEV.
Local code execution in Microsoft Excel (and the broader Office family including Microsoft 365 Apps for Enterprise, Office 2019/2021/2024 LTSC, Office for Mac, and Office Online Server) stems from a heap-based buffer overflow that triggers when a user opens a maliciously crafted spreadsheet. The CVSS vector (AV:L/AC:L/PR:N/UI:R) indicates an unauthenticated attacker gains full code execution in the victim's context but only after the target opens the file. No public exploit identified at time of analysis, and it is not listed in CISA KEV; a vendor patch is available from Microsoft (MSRC CVE-2026-55041).
Local code execution in Microsoft Word (and Office/SharePoint components that render Word content) stems from an integer overflow in the file-parsing path, letting an attacker who convinces a victim to open a crafted document run arbitrary code with the victim's privileges. It affects a broad Office footprint including Microsoft 365 Apps, Office 2019, Office LTSC 2021/2024, the macOS editions, and SharePoint Server 2016/2019/Subscription Edition. There is no public exploit identified at time of analysis and it is not listed in CISA KEV, but the 7.8 CVSS and Word's ubiquity make it a routine priority patch.
Local code execution in Microsoft Office Word (across Microsoft 365 Apps, Office 2019/LTSC 2021/2024, Office for Mac, and Word 2016) allows an attacker to run arbitrary code by exploiting a use-after-free memory corruption flaw when a victim opens a maliciously crafted document. The CVSS 3.1 base score is 7.8 with a local attack vector requiring user interaction; there is no public exploit identified at time of analysis and the flaw is not listed in CISA KEV. Microsoft, which reported the issue itself, has released a patch.
Local arbitrary code execution in Microsoft Office (Microsoft 365 Apps for Enterprise, Office 2016/2019, Office LTSC 2021/2024, and their macOS equivalents) arises from a heap-based buffer overflow (CWE-122) that an attacker triggers by convincing a user to open a maliciously crafted Office document. The CVSS 3.1 vector (AV:L/AC:L/PR:N/UI:R) shows the flaw requires user interaction but no prior privileges, yielding full high-impact compromise of confidentiality, integrity, and availability in the user's context. There is no public exploit identified at time of analysis and it is not listed in CISA KEV, so exploitation status is not currently confirmed.
Local code execution in Microsoft Office (2016, 2019, LTSC 2021/2024, 365 Apps, and the macOS builds) stems from an out-of-bounds read in a file-parsing routine that lets a crafted document corrupt memory and run attacker-controlled code in the context of the current user. The same document-parsing components also affect SharePoint Enterprise Server 2016, SharePoint Server 2019, and the Subscription Edition. Reported by Microsoft with a vendor patch available; no public exploit identified at time of analysis.
Local code execution in Microsoft Excel (and the broader Office suite through Microsoft 365 Apps, Office 2019/2021/2024 LTSC, Office for Mac, and Office Online Server) arises from an integer underflow (CWE-191) in Excel's file parsing, letting an attacker run arbitrary code in the context of the user who opens a maliciously crafted spreadsheet. The CVSS 3.1 vector (AV:L/AC:L/PR:N/UI:R) shows no attacker privileges are needed but the victim must open the file, giving full confidentiality, integrity, and availability impact. No public exploit identified at time of analysis, and it is not listed in CISA KEV; a vendor patch is available.
Arbitrary code execution in Microsoft Excel (across Microsoft 365 Apps, Office 2019, Office LTSC 2021/2024, Office for Mac, and Office Online Server) arises from a heap-based buffer overflow (CWE-122) that triggers when a victim opens a maliciously crafted spreadsheet. The CVSS 3.1 vector (AV:L/AC:L/PR:N/UI:R) confirms this is a local, user-interaction-dependent file-format attack rather than a remote network exploit, yielding code execution in the context of the current user. No public exploit has been identified at time of analysis, and the CVE is not listed in CISA KEV; a Microsoft patch is available.
Local code execution in Microsoft Excel (spanning Microsoft 365 Apps for Enterprise, Excel 2016, Office 2019, Office LTSC 2021/2024, the macOS Office builds, and Office Online Server) arises from an integer overflow (CWE-190) triggered when the application parses a maliciously crafted spreadsheet. An unauthorized attacker who convinces a victim to open a booby-trapped file can run arbitrary code in the context of the current user, with full confidentiality, integrity, and availability impact per the 7.8 CVSS vector. There is no public exploit identified at time of analysis, and it is not listed in CISA KEV.
Local code execution in Microsoft Office Excel (spanning Excel 2016, Office 2019, Office LTSC 2021/2024, Microsoft 365 Apps for Enterprise, the macOS builds, and Office Online Server) arises from an out-of-bounds read (CWE-125) that an attacker triggers by convincing a user to open a maliciously crafted workbook. The CVSS 3.1 base score is 7.8 with high confidentiality, integrity, and availability impact, but exploitation requires user interaction (opening the file) and no active exploitation or public proof-of-concept has been reported. There is no public exploit identified at time of analysis; Microsoft has released a patch via its Security Update Guide.
Local code execution in Microsoft Office (Microsoft 365 Apps, Office 2016/2019, LTSC 2021/2024, Office for Mac, and SharePoint Server) arises from a heap-based buffer overflow (CWE-122) that an unauthorized attacker triggers when a victim opens a maliciously crafted document. The CVSS 3.1 base score is 7.8 (AV:L/AC:L/PR:N/UI:R) with high confidentiality, integrity, and availability impact, meaning successful exploitation yields full code execution in the context of the current user. There is no public exploit identified at time of analysis and it is not listed in CISA KEV, but the ubiquity of Office makes it a high-priority patch target.
Local code execution in Microsoft Excel (Microsoft 365 Apps, Office 2019/LTSC 2021/2024, Office for Mac, and Office Online Server) arises from a type-confusion flaw (CWE-843) in how Excel parses spreadsheet content. An attacker who convinces a victim to open a malicious workbook can run arbitrary code in the context of the current user, gaining high confidentiality, integrity, and availability impact. Reported by Microsoft with a patch available; there is no public exploit identified at time of analysis and it is not listed in CISA KEV.
Local arbitrary code execution in Microsoft Office (2016, 2019, LTSC 2021/2024, Microsoft 365 Apps for Enterprise, and Office for Mac 2021/2024) arises from a type-confusion flaw (CWE-843) that lets an attacker run code in the context of the current user when a victim opens a crafted file. The CVSS 3.1 base score is 7.8 (AV:L/AC:L/PR:N/UI:R) reflecting local vector with required user interaction and high impact to confidentiality, integrity, and availability. There is no public exploit identified at time of analysis and it is not listed in CISA KEV, but a vendor patch is available via MSRC.
Local code execution in Microsoft Office (2016, 2019, LTSC 2021/2024, Microsoft 365 Apps for Enterprise, and Office for Mac) stems from a use-after-free memory corruption (CWE-416) that an attacker triggers when a victim opens a maliciously crafted document. Rated CVSS 7.8 with high confidentiality, integrity, and availability impact, exploitation requires user interaction but no prior authentication, letting an attacker run arbitrary code in the context of the current user. There is no public exploit identified at time of analysis and it is not listed in CISA KEV, but Microsoft has released a fix, so patching should be prioritized during the normal Patch Tuesday cycle.
Local code execution in Microsoft Excel (Office 2016 through LTSC 2024, Microsoft 365 Apps, and Mac editions) allows an attacker to run arbitrary code by tricking a user into opening a maliciously crafted spreadsheet that triggers a type-confusion condition in Excel's file parser. The CVSS 3.1 score is 7.8 (High) with the local vector reflecting file-open exploitation rather than remote-network access, and success requires user interaction. There is no public exploit identified at time of analysis and it is not listed in CISA KEV.
Local code execution in Microsoft Office (365 Apps for Enterprise, Office 2016/2019, and Office LTSC 2021/2024) arises from a heap-based buffer overflow that an attacker triggers when a victim opens a maliciously crafted Office document. Successful exploitation yields full confidentiality, integrity, and availability impact in the context of the current user. There is no public exploit identified at time of analysis and it is not listed in CISA KEV, but the ubiquity of Office and the low attack complexity make this a meaningful patch priority.
Local code execution in Microsoft Office (2016, 2019, LTSC 2021/2024, Microsoft 365 Apps, and Office for Mac 2021/2024) arises from a use-after-free memory corruption flaw that an attacker triggers by convincing a user to open a maliciously crafted Office document. Successful exploitation runs arbitrary code in the context of the current user, yielding full confidentiality, integrity, and availability impact on the host. There is no public exploit identified at time of analysis and the flaw is not listed in CISA KEV; Microsoft has published a patch via MSRC.
Local code execution in Microsoft Office (2016, 2019, LTSC 2021/2024, Microsoft 365 Apps, and the macOS editions) arises from a use-after-free memory-corruption flaw (CWE-416) that lets an attacker run arbitrary code in the context of the current user after the victim opens a maliciously crafted document. The CVSS 3.1 base score is 7.8 (AV:L/AC:L/PR:N/UI:R) with high impact to confidentiality, integrity, and availability, and requires user interaction. There is no public exploit identified at time of analysis and it is not listed in CISA KEV, but a vendor patch is available via MSRC.
Local code execution in Microsoft Office (Microsoft 365 Apps for Enterprise, Office 2016/2019, and Office LTSC 2021/2024) arises from a heap-based buffer overflow (CWE-122) that an attacker triggers by convincing a user to open a maliciously crafted Office document. Successful exploitation yields full code execution in the context of the current user, with high impact to confidentiality, integrity, and availability. There is no public exploit identified at time of analysis and it is not listed in CISA KEV; SSVC rates current exploitation as none.
Local code execution in Microsoft Office Excel (across Microsoft 365 Apps for Enterprise, Office 2019, Office LTSC 2021/2024, and their macOS equivalents) arises from a use-after-free (CWE-416) memory-corruption flaw triggered when a user opens a maliciously crafted spreadsheet. The CVSS vector (AV:L/AC:L/PR:N/UI:R) indicates an unauthenticated attacker can achieve full confidentiality, integrity, and availability impact but requires the victim to open a file, making it a classic phishing-delivered client-side bug. There is no public exploit identified at time of analysis and it is not listed in CISA KEV, though Excel memory-corruption bugs are historically attractive targets.
Local code execution in Microsoft Office (including Microsoft 365 Apps for Enterprise, Office 2016/2019, and Office LTSC 2021/2024) stems from a use-after-free memory-corruption flaw (CWE-416). An attacker who convinces a user to open a specially crafted Office document can execute arbitrary code in the context of the current user, gaining full confidentiality, integrity, and availability impact. Exploitation requires user interaction (opening a malicious file) and there is no public exploit identified at time of analysis.
Local arbitrary code execution in Microsoft Excel arises from a heap-based buffer overflow (CWE-122) triggered when a user opens a maliciously crafted spreadsheet; successful exploitation runs attacker code in the context of the current user across desktop Office builds (Excel 2016, Office 2019, LTSC 2021/2024, Microsoft 365 Apps) on both Windows and Mac, as well as Office Online Server. The flaw carries CVSS 7.8 with high confidentiality, integrity, and availability impact but requires user interaction (opening the file). No public exploit identified at time of analysis, and it is not listed in CISA KEV; a vendor patch is available from Microsoft.
Local code execution in Microsoft Excel (2016, Office 2019, Office LTSC 2021/2024, Microsoft 365 Apps, Office for Mac, and Office Online Server) arises from a use-after-free memory corruption (CWE-416) that an attacker triggers when a victim opens a maliciously crafted spreadsheet. Exploitation runs code in the context of the current user and requires user interaction (opening the file), with no public exploit identified at time of analysis. This is a locally-exploited, phishing-delivered class of bug typical of Office file-format handlers, patched by Microsoft via MSRC.
Local code execution in Microsoft Excel (and the broader Office family through Microsoft 365 Apps, Office 2019/2021/2024 LTSC, Office for Mac, and Office Online Server) arises from a stack-based buffer overflow (CWE-121) triggered when a user opens a maliciously crafted spreadsheet. An attacker who convinces a victim to open the file runs arbitrary code in the security context of the current user, with high impact to confidentiality, integrity, and availability. There is no public exploit identified at time of analysis and the vulnerability is not listed in CISA KEV; Microsoft has released a patch.
Local code execution in Microsoft Excel (including Microsoft 365 Apps, Office 2016/2019, Office LTSC 2021/2024, and Office for Mac) arises from a heap-based buffer overflow (CWE-122) triggered when a victim opens a maliciously crafted spreadsheet, letting an attacker run arbitrary code in the user's context. The CVSS 3.1 score is 7.8 (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H), reflecting that exploitation needs user interaction but no prior privileges once the file is opened. There is no public exploit identified at time of analysis, and it is not listed in CISA KEV; Microsoft has released a patch.
Local privilege escalation in Microsoft Office Click-To-Run (Microsoft 365 Apps, Office 2019, Office LTSC 2021/2024) allows an authenticated local attacker to elevate privileges due to improper access control in the update/servicing component. A successful attack results in total compromise of confidentiality, integrity, and availability with a scope change beyond the vulnerable component. There is no public exploit identified at time of analysis and EPSS exploitation probability is very low (0.04%, 12th percentile), but the vendor rates technical impact as total.
Local privilege escalation in Microsoft Office Click-To-Run (the servicing/update engine behind Microsoft 365 Apps, Office 2019, and Office LTSC 2021/2024) lets an already-authenticated low-privileged user escalate to higher privileges on the host due to insufficiently granular access control (CWE-1220). The CVSS 3.1 vector (AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H) shows a scope change with total confidentiality, integrity, and availability impact, meaning a successful attacker crosses a security boundary from the Office servicing context to the wider system. There is no public exploit identified at time of analysis, EPSS is very low (0.04%), and CISA SSVC rates exploitation as 'none', so this is a serious-but-not-actively-exploited local EoP that should be patched on the normal accelerated cycle.
Local privilege elevation in Microsoft Office Click-To-Run (affecting Microsoft 365 Apps for Enterprise, Office 2019, and Office LTSC 2021/2024) lets an already-authenticated local attacker exploit a use-after-free memory corruption to gain higher privileges on the host. Microsoft has released a patch, and there is no public exploit identified at time of analysis; EPSS probability is negligible (0.04%) and CISA SSVC records exploitation status as none, indicating this is a patch-on-schedule issue rather than an emergency.
Local code execution in Microsoft Word (and Office 2016/2019, LTSC 2021/2024, 365 Apps, Office for Mac, and SharePoint Server) stems from an untrusted pointer dereference (CWE-822) that lets an attacker run arbitrary code with the victim's privileges when a malicious file is processed. Microsoft rates it CVSS 8.4 with total technical impact (high confidentiality, integrity, and availability loss). There is no public exploit identified at time of analysis, EPSS is very low (0.04%), and CISA SSVC marks exploitation as none and not automatable, indicating no observed real-world attacks yet.
Arbitrary code execution in Microsoft Excel (and the broader Office family through Microsoft 365 Apps, Office 2019, LTSC 2021/2024, Office for Mac, and Office Online Server) is possible when a user opens a maliciously crafted spreadsheet that triggers a heap-based buffer overflow (CWE-122), running attacker code in the context of the current user. There is no public exploit identified at time of analysis and the EPSS probability is very low (0.06%, 18th percentile), but the technical impact is total (full confidentiality, integrity, and availability loss). Microsoft has released patches; exploitation requires the victim to open a file, so it is a phishing/social-engineering-driven local vulnerability rather than a remotely wormable one.
Local code execution in Microsoft Office Word (2016, 2019, LTSC 2021/2024, Microsoft 365 Apps, and Office LTSC for Mac 2021/2024) arises from a use-after-free memory-corruption flaw that lets an attacker run arbitrary code in the context of the user who opens a maliciously crafted document. Microsoft has released a patch, and no public exploit has been identified at time of analysis; EPSS is very low at 0.06% (18th percentile) and CISA SSVC records no known exploitation.
Local code execution in Microsoft Office Excel (Excel 2016, Office 2019/LTSC 2021/2024, Microsoft 365 Apps, Office for Mac, and Office Online Server) arises from a use-after-free memory corruption flaw that an attacker triggers by convincing a user to open a specially crafted spreadsheet. Successful exploitation yields full compromise of the current user's context (high confidentiality, integrity, and availability impact). There is no public exploit identified at time of analysis, EPSS is very low (0.06%), and CISA SSVC records exploitation status as none, indicating this is a patch-in-cycle issue rather than an active threat.
Local code execution in Microsoft Office (2016, 2019, LTSC 2021/2024, 365 Apps, and Office LTSC for Mac 2021/2024) arises from a use-after-free memory corruption (CWE-416) that lets an attacker run arbitrary code with the victim's privileges. Microsoft's CVSS vector rates it AV:L/PR:N/UI:N (base 8.4) with total technical impact, though there is no public exploit identified at time of analysis and EPSS exploitation probability is negligible at 0.04%. A vendor patch is available from Microsoft (MSRC update guide).
Local privilege elevation in Microsoft Office (Microsoft 365 Apps for Enterprise, Office 2019, and Office LTSC 2021/2024) stems from a use-after-free memory corruption flaw (CWE-416) that an already-authorized local attacker can trigger to gain higher privileges on the host. Microsoft has released a patch, and there is no public exploit identified at time of analysis; EPSS is very low (0.04%, 13th percentile) and CISA SSVC records exploitation as none, indicating no observed in-the-wild activity. The CVSS 3.1 base score is 7.8 with total technical impact (C:H/I:H/A:H) once triggered.
Local code execution in Microsoft Word (and the Office suites that bundle it - Office 2016/2019, LTSC 2021/2024, Microsoft 365 Apps, and Office LTSC for Mac 2021/2024) stems from a use-after-free memory-corruption defect that lets an attacker run arbitrary code in the context of the current user, typically by having the victim process a crafted document. Microsoft (the reporting party) has released a fix; there is no public exploit identified at time of analysis and EPSS is very low (0.04%, 14th percentile). SSVC rates exploitation as none but technical impact as total, so this is a patch-on-schedule item rather than an emergency.
Local code execution in Microsoft Word (Office 2016 through Office LTSC 2024, Microsoft 365 Apps, and Office for Mac) results from a type-confusion flaw (CWE-843) that lets an unauthorized attacker run arbitrary code with the victim's privileges. Microsoft rates it CVSS 8.4 with total technical impact, but there is no public exploit identified at time of analysis and EPSS exploitation probability is low (0.15%, 35th percentile). CISA SSVC records exploitation status as none and the issue is not automatable, indicating no observed in-the-wild activity.
Local code execution in Microsoft Office (2016, 2019, LTSC 2021/2024, 365 Apps for Enterprise, Office for Android, and Office LTSC for Mac 2021/2024) stems from a heap-based buffer overflow that lets an attacker run arbitrary code with the victim's privileges. The flaw was reported by Microsoft, a vendor patch is available, and there is no public exploit identified at time of analysis; EPSS is very low at 0.04% and CISA SSVC records exploitation as none. Impact is total (full confidentiality, integrity, and availability loss) but exploitation is not automatable and, per typical Office file-parsing bugs, hinges on processing attacker-supplied content.