Microsoft Office 2019
Monthly
Information disclosure in Microsoft Office Word allows unauthenticated remote attackers to exfiltrate sensitive data by enticing a user to open a maliciously crafted document. The CVSS vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N) confirms network-based exploitation requiring no authentication on the attacker's side but mandating user interaction - the high confidentiality impact signals potentially significant data exposure. No public exploit code has been identified at time of analysis, and Microsoft has released patches across all affected Office product lines.
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.
Memory parsing across Microsoft Office and SharePoint Server products is susceptible to a CWE-125 out-of-bounds read that, when triggered by opening a specially crafted Office document, produces local information disclosure or application availability loss. The affected surface is broad - spanning Microsoft 365 Apps for Enterprise, Office 2016 through LTSC 2024 on both Windows and macOS, and SharePoint Enterprise Server 2016, 2019, and Subscription Edition - but real-world exploitation pressure is low: EPSS sits at 0.36% (28th percentile), CISA SSVC rates exploitation as none and the attack as non-automatable, and no public exploit has been identified at time of analysis. Vendor-released patches are available for all affected product lines.
Out-of-bounds read in Microsoft Office exposes sensitive memory contents to a local, unauthenticated attacker who can induce a user to open a malicious document. Affected products span the full current Office portfolio - Office 2016 through LTSC 2024 on both Windows and macOS - making the blast radius broad despite the local attack vector. No public exploit identified at time of analysis and SSVC classifies exploitation as none and not automatable, though the high confidentiality impact (C:H) and near-universal deployment of Office keep this a meaningful patching priority.
Out-of-bounds read in Microsoft Office and SharePoint exposes process memory contents locally when a user opens a specially crafted document. Affected products span the full Office suite - Office 2016, 2019, LTSC 2021, LTSC 2024, Microsoft 365 Apps for Enterprise (Windows and Mac), and SharePoint Server 2016, 2019, and Subscription Edition - covering virtually the entire active Office install base. No public exploit code exists and CISA SSVC rates exploitation as none, making this a patch-and-monitor priority rather than an emergency response.
Information disclosure in Microsoft Office (Microsoft 365 Apps, Office 2016/2019, Office LTSC 2021/2024, and Office for Mac) arises from an out-of-bounds read (CWE-125) that lets an attacker who convinces a victim to open a crafted file read memory beyond an intended buffer boundary. Exploitation is local and requires user interaction, and there is no public exploit identified at time of analysis and no CISA KEV listing. Disclosed memory can leak sensitive data such as heap contents or pointer addresses useful for defeating ASLR in a follow-on exploit chain.
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.
Out-of-bounds read in Microsoft Office exposes a limited portion of process memory to a local attacker when a user opens a specially crafted document. Affected products span Office 2016 through LTSC 2024 on both Windows and macOS, with impact confined to low-severity information disclosure and no integrity or availability consequence. No public exploit code exists and CISA has not listed this in KEV; SSVC confirms exploitation status as none and the vulnerability is assessed as non-automatable, collectively placing this in the lowest real-world risk tier despite broad product coverage.
Uninitialized memory disclosure in Microsoft Office exposes sensitive data locally when a user interacts with a crafted document. The vulnerability, rooted in CWE-908 (Use of Uninitialized Resource), affects the full breadth of current Office deployments across Windows and macOS, including Office 2016 through LTSC 2024 and Microsoft 365 Apps for Enterprise. No public exploit code has been identified at time of analysis, and SSVC signals confirm no observed exploitation; however, the High confidentiality impact warrants prompt patching given Office's ubiquitous deployment footprint.
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.
Numeric truncation error (CWE-197) in Microsoft Office Word triggers local information disclosure when a user opens a maliciously crafted document, exposing potentially sensitive memory contents with high confidentiality impact (C:H). The vulnerability spans a broad range of Microsoft Office and SharePoint products - including Microsoft 365 Apps for Enterprise, Office LTSC 2021/2024, Word 2016, Office 2019, Office 365 for Mac, and multiple SharePoint Server versions. No public exploit identified at time of analysis; CISA SSVC rates exploitation as none, EPSS stands at 0.39% (31st percentile), and a vendor-released patch is available from Microsoft.
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.
Microsoft Office information disclosure via integer overflow (CWE-190) exposes high-confidentiality data to a local attacker who can induce a victim to open a crafted document. The flaw affects a broad range of Microsoft Office versions on both Windows and macOS - including Office 2016, 2019, LTSC 2021, LTSC 2024, and Microsoft 365 Apps for Enterprise - confirmed by Microsoft via MSRC. No public exploit code exists and CISA SSVC rates exploitation as none, placing this in low urgency despite the High confidentiality impact in the CVSS vector; however, the extensive product footprint means patching remains advisable.
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.
Out-of-bounds read in Microsoft Excel's file parser discloses sensitive memory contents when a victim opens a specially crafted workbook, affecting Excel 2016, Office 2019, Office LTSC 2021/2024, Microsoft 365 Apps for Enterprise, Office 365 for Mac, Office LTSC for Mac 2021/2024, and Office Online Server. The CVSS vector (AV:N/PR:N/UI:R/C:H) indicates unauthenticated network delivery with mandatory user interaction and high confidentiality impact. No public exploit identified at time of analysis; SSVC confirms no known active exploitation and EPSS at 0.64% (46th percentile) reflects below-average exploitation probability, positioning this as a targeted phishing risk rather than an opportunistic threat.
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.
Out-of-bounds read in Microsoft Office (including 365 Apps for Enterprise, Office 2016/2019, LTSC 2021/2024 on Windows and macOS, and SharePoint Server 2016/2019/Subscription Edition) allows a local attacker to disclose limited memory contents when a victim opens a specially crafted document. The CVSS 3.3 Low score, EPSS of 0.51% (40th percentile), SSVC exploitation status of 'none,' and absence from CISA KEV collectively place this vulnerability at low real-world priority despite its broad product footprint. No public exploit or proof-of-concept code has been identified at time of analysis.
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.
Information disclosure in Microsoft Office Word and related Microsoft 365/SharePoint products exposes sensitive memory contents when a user opens a specially crafted document. Affecting a broad suite of products spanning Word 2016 through Office LTSC 2024 and SharePoint Server versions, the flaw stems from improper input type validation (CWE-1287) in the document parsing subsystem. No public exploit has been identified at time of analysis; EPSS at 0.39% and CISA SSVC exploitation status of 'none' confirm this remains a theoretical rather than actively targeted risk, though Microsoft has released patches.
Untrusted pointer dereference (CWE-822) in Microsoft Excel allows a local attacker to disclose sensitive memory contents when a victim opens a specially crafted workbook. The flaw affects a broad swath of Microsoft Office product lines - from Excel 2016 through Office LTSC 2024 and their Mac counterparts - as confirmed by CPE enumeration. No public exploit code or active exploitation has been identified at time of analysis; SSVC rates exploitation as none and technical impact as partial, placing this in the moderate real-world priority tier despite the C:H CVSS rating.
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.
Out-of-bounds read in Microsoft Office Word and associated Microsoft 365 products allows local information disclosure when a user opens a specially crafted document. Affecting a broad range of Microsoft Office versions across Windows and macOS - including Office 2019, LTSC 2021/2024, Microsoft 365 Apps for Enterprise, Office 365 for Mac, and SharePoint Server 2016/2019/Subscription Edition - an attacker with no prior system privileges must socially engineer a victim into opening a malicious file to trigger memory disclosure. No public exploit identified at time of analysis; EPSS is 0.39% (31st percentile) and SSVC confirms exploitation status as none and the attack as non-automatable.
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.
Out-of-bounds read in Microsoft Office exposes high-confidentiality memory contents to a local, unauthenticated attacker who can induce a user to open a crafted document. The flaw affects a wide swath of Office and SharePoint products across Windows and Mac platforms, including Microsoft 365 Apps for Enterprise, Office 2016 through LTSC 2024, Office 365 for Mac, and SharePoint Server 2016 through the Subscription Edition. No public exploit has been identified at time of analysis, EPSS is low at 0.50% (39th percentile), and CISA SSVC rates exploitation as none and the flaw as non-automatable, placing this firmly in a patch-and-monitor risk tier rather than an emergency-response tier.
Out-of-bounds memory read in Microsoft Office and SharePoint exposes sensitive in-process data when a user opens a specially crafted document on a local machine. Affecting Microsoft 365 Apps for Enterprise, Office 2016 through LTSC 2024 (Windows and macOS), and SharePoint Server 2016 through Subscription Edition, the CWE-125 flaw allows an unauthorized attacker to read beyond allocated buffer boundaries, achieving High confidentiality impact with no integrity or availability consequence. No public exploit exists and no active exploitation is confirmed at time of analysis - CISA SSVC rates exploitation status as none - making this a routine-priority patch despite the broad product coverage.
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.
Out-of-bounds read in Microsoft Office and SharePoint Server exposes local memory contents to an unauthorized attacker, resulting in information disclosure. The vulnerability (CWE-125) is triggered when a user opens a specially crafted Office document, making exploitation dependent on user interaction rather than remote network access. No active exploitation has been confirmed - CISA KEV does not list this CVE, SSVC rates exploitation as none, and EPSS probability sits at 0.51% (40th percentile), collectively indicating low real-world threat activity despite the wide deployment footprint of affected products.
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 information disclosure in Microsoft Office and SharePoint via an integer overflow (CWE-190) exposes sensitive data to low-privileged local attackers across a broad range of Office versions on both Windows and Mac platforms. The CVSS vector (AV:L/PR:L) confirms exploitation requires an existing foothold on the target machine, limiting real-world impact to post-compromise scenarios or insider threats. No active exploitation is confirmed by CISA KEV, and the EPSS score of 0.40% (32nd percentile) combined with SSVC exploitation status of 'none' indicates this is not currently being weaponized in the wild.
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.
Out-of-bounds read (CWE-125) in Microsoft Office's file parsing logic exposes potentially sensitive in-memory data to a local attacker when a victim opens a specially crafted document, affecting Windows and macOS Office editions as well as Microsoft SharePoint Server. The CVSS 5.5 Medium score reflects a local-only attack vector with mandatory user interaction, confining impact to information disclosure with no integrity or availability consequence. No public exploit code exists, CISA SSVC classifies exploitation as 'none' with no automation potential, and the EPSS of 0.51% (40th percentile) confirms low current exploitation probability.
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.
Out-of-bounds read in Microsoft Excel's file parsing engine exposes sensitive memory contents when a victim opens a specially crafted workbook, affecting Excel 2016 through Office LTSC 2024 and Office Online Server across both Windows and macOS platforms. The CVSS vector (AV:L/UI:R/C:H/I:N/A:N) confirms impact is limited to confidentiality loss - no code execution results - and requires local user interaction to trigger. No public exploit has been identified and CISA has not listed this in KEV; with an EPSS of 0.46% and SSVC exploitation status of none, this is appropriate for standard patch cycle prioritization rather than emergency response.
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.
Out-of-bounds read in Microsoft Excel and related Office products exposes adjacent process memory to local information disclosure when a user opens a specially crafted spreadsheet file. The flaw spans a broad set of Microsoft Office versions across Windows and macOS - including Excel 2016, Office 2019, LTSC 2021/2024, Microsoft 365 Apps for Enterprise, and Office Online Server - with vendor-released patches now available for all affected builds. No active exploitation has been confirmed by CISA KEV, and EPSS places exploitation probability at 0.35% (27th percentile), consistent with SSVC's assessment of no current exploitation and non-automatable delivery.
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.
Untrusted pointer dereference in Microsoft Excel exposes sensitive in-process memory to a local attacker across virtually the entire Office product family - Excel 2016 through Office LTSC 2024 on Windows and macOS, plus Office Online Server. An attacker must deliver a crafted spreadsheet and induce the victim to open it; successful exploitation yields high confidentiality impact with no integrity or availability effect. No public exploit code or active exploitation has been identified; EPSS at 0.46% (37th percentile) and SSVC exploitation status of 'none' are consistent with low real-world risk at this time.
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.
Information disclosure in Microsoft Office (Microsoft 365 Apps, Office 2016/2019, Office LTSC 2021/2024, and Office for Mac) via an out-of-bounds read (CWE-125) lets an attacker leak sensitive memory contents when a victim opens a maliciously crafted document. The CVSS 3.1 base score is 7.1 (AV:L/AC:L/PR:N/UI:R), reflecting local exploitation that requires user interaction but no prior authentication. Microsoft is the reporting source and has published a fix; there is no public exploit identified at time of analysis and the issue is not listed in CISA KEV.
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.
Out-of-bounds read in Microsoft Excel's spreadsheet parser (CWE-125) exposes affected systems to both local information disclosure and application crash when a victim opens a specially crafted file, spanning Excel 2016 through Office LTSC 2024 and Office 365 for Mac. The CVSS vector (AV:L/UI:R/A:H) reveals that while the CVE description emphasizes information disclosure, the primary real-world impact is application availability - the invalid memory read can crash Excel (A:H), with incidental memory content leakage (C:L) as a secondary effect. No public exploit code has been identified at time of analysis and CISA SSVC assigns exploitation status of none, consistent with a low EPSS score of 0.31% at the 23rd percentile.
Heap-based buffer overflow in Microsoft Office Excel triggers a local information disclosure when a target user opens a maliciously crafted document. Affecting Excel 2016 through Office LTSC 2024 and Microsoft 365 Apps for Enterprise on both Windows and macOS, the vulnerability yields only limited confidentiality impact (C:L) with no integrity or availability consequence, placing it in the Low severity tier at CVSS 3.3. No public exploit code exists and no active exploitation has been confirmed - CISA's SSVC framework rates exploitation as none, automatable as no, and technical impact as partial, consistent with the low EPSS probability of 0.27% (19th percentile).
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).
External control of file name or path (CWE-73) in Microsoft Office Word enables network-based information disclosure when a victim opens a specially crafted document, affecting Word 2016, Office 2019, LTSC 2021/2024, and Microsoft 365 Apps for Enterprise. An unauthenticated remote attacker can exploit this to coerce Word into resolving an attacker-controlled file path - likely a UNC path - causing an outbound network request that leaks sensitive data such as NTLM credentials. No active exploitation is confirmed (not listed in CISA KEV), and the EPSS score of 0.05% at the 14th percentile indicates negligible real-world exploitation activity at time of analysis.
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.
Information disclosure in Microsoft Office Word allows unauthenticated remote attackers to exfiltrate sensitive data by enticing a user to open a maliciously crafted document. The CVSS vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N) confirms network-based exploitation requiring no authentication on the attacker's side but mandating user interaction - the high confidentiality impact signals potentially significant data exposure. No public exploit code has been identified at time of analysis, and Microsoft has released patches across all affected Office product lines.
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.
Memory parsing across Microsoft Office and SharePoint Server products is susceptible to a CWE-125 out-of-bounds read that, when triggered by opening a specially crafted Office document, produces local information disclosure or application availability loss. The affected surface is broad - spanning Microsoft 365 Apps for Enterprise, Office 2016 through LTSC 2024 on both Windows and macOS, and SharePoint Enterprise Server 2016, 2019, and Subscription Edition - but real-world exploitation pressure is low: EPSS sits at 0.36% (28th percentile), CISA SSVC rates exploitation as none and the attack as non-automatable, and no public exploit has been identified at time of analysis. Vendor-released patches are available for all affected product lines.
Out-of-bounds read in Microsoft Office exposes sensitive memory contents to a local, unauthenticated attacker who can induce a user to open a malicious document. Affected products span the full current Office portfolio - Office 2016 through LTSC 2024 on both Windows and macOS - making the blast radius broad despite the local attack vector. No public exploit identified at time of analysis and SSVC classifies exploitation as none and not automatable, though the high confidentiality impact (C:H) and near-universal deployment of Office keep this a meaningful patching priority.
Out-of-bounds read in Microsoft Office and SharePoint exposes process memory contents locally when a user opens a specially crafted document. Affected products span the full Office suite - Office 2016, 2019, LTSC 2021, LTSC 2024, Microsoft 365 Apps for Enterprise (Windows and Mac), and SharePoint Server 2016, 2019, and Subscription Edition - covering virtually the entire active Office install base. No public exploit code exists and CISA SSVC rates exploitation as none, making this a patch-and-monitor priority rather than an emergency response.
Information disclosure in Microsoft Office (Microsoft 365 Apps, Office 2016/2019, Office LTSC 2021/2024, and Office for Mac) arises from an out-of-bounds read (CWE-125) that lets an attacker who convinces a victim to open a crafted file read memory beyond an intended buffer boundary. Exploitation is local and requires user interaction, and there is no public exploit identified at time of analysis and no CISA KEV listing. Disclosed memory can leak sensitive data such as heap contents or pointer addresses useful for defeating ASLR in a follow-on exploit chain.
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.
Out-of-bounds read in Microsoft Office exposes a limited portion of process memory to a local attacker when a user opens a specially crafted document. Affected products span Office 2016 through LTSC 2024 on both Windows and macOS, with impact confined to low-severity information disclosure and no integrity or availability consequence. No public exploit code exists and CISA has not listed this in KEV; SSVC confirms exploitation status as none and the vulnerability is assessed as non-automatable, collectively placing this in the lowest real-world risk tier despite broad product coverage.
Uninitialized memory disclosure in Microsoft Office exposes sensitive data locally when a user interacts with a crafted document. The vulnerability, rooted in CWE-908 (Use of Uninitialized Resource), affects the full breadth of current Office deployments across Windows and macOS, including Office 2016 through LTSC 2024 and Microsoft 365 Apps for Enterprise. No public exploit code has been identified at time of analysis, and SSVC signals confirm no observed exploitation; however, the High confidentiality impact warrants prompt patching given Office's ubiquitous deployment footprint.
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.
Numeric truncation error (CWE-197) in Microsoft Office Word triggers local information disclosure when a user opens a maliciously crafted document, exposing potentially sensitive memory contents with high confidentiality impact (C:H). The vulnerability spans a broad range of Microsoft Office and SharePoint products - including Microsoft 365 Apps for Enterprise, Office LTSC 2021/2024, Word 2016, Office 2019, Office 365 for Mac, and multiple SharePoint Server versions. No public exploit identified at time of analysis; CISA SSVC rates exploitation as none, EPSS stands at 0.39% (31st percentile), and a vendor-released patch is available from Microsoft.
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.
Microsoft Office information disclosure via integer overflow (CWE-190) exposes high-confidentiality data to a local attacker who can induce a victim to open a crafted document. The flaw affects a broad range of Microsoft Office versions on both Windows and macOS - including Office 2016, 2019, LTSC 2021, LTSC 2024, and Microsoft 365 Apps for Enterprise - confirmed by Microsoft via MSRC. No public exploit code exists and CISA SSVC rates exploitation as none, placing this in low urgency despite the High confidentiality impact in the CVSS vector; however, the extensive product footprint means patching remains advisable.
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.
Out-of-bounds read in Microsoft Excel's file parser discloses sensitive memory contents when a victim opens a specially crafted workbook, affecting Excel 2016, Office 2019, Office LTSC 2021/2024, Microsoft 365 Apps for Enterprise, Office 365 for Mac, Office LTSC for Mac 2021/2024, and Office Online Server. The CVSS vector (AV:N/PR:N/UI:R/C:H) indicates unauthenticated network delivery with mandatory user interaction and high confidentiality impact. No public exploit identified at time of analysis; SSVC confirms no known active exploitation and EPSS at 0.64% (46th percentile) reflects below-average exploitation probability, positioning this as a targeted phishing risk rather than an opportunistic threat.
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.
Out-of-bounds read in Microsoft Office (including 365 Apps for Enterprise, Office 2016/2019, LTSC 2021/2024 on Windows and macOS, and SharePoint Server 2016/2019/Subscription Edition) allows a local attacker to disclose limited memory contents when a victim opens a specially crafted document. The CVSS 3.3 Low score, EPSS of 0.51% (40th percentile), SSVC exploitation status of 'none,' and absence from CISA KEV collectively place this vulnerability at low real-world priority despite its broad product footprint. No public exploit or proof-of-concept code has been identified at time of analysis.
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.
Information disclosure in Microsoft Office Word and related Microsoft 365/SharePoint products exposes sensitive memory contents when a user opens a specially crafted document. Affecting a broad suite of products spanning Word 2016 through Office LTSC 2024 and SharePoint Server versions, the flaw stems from improper input type validation (CWE-1287) in the document parsing subsystem. No public exploit has been identified at time of analysis; EPSS at 0.39% and CISA SSVC exploitation status of 'none' confirm this remains a theoretical rather than actively targeted risk, though Microsoft has released patches.
Untrusted pointer dereference (CWE-822) in Microsoft Excel allows a local attacker to disclose sensitive memory contents when a victim opens a specially crafted workbook. The flaw affects a broad swath of Microsoft Office product lines - from Excel 2016 through Office LTSC 2024 and their Mac counterparts - as confirmed by CPE enumeration. No public exploit code or active exploitation has been identified at time of analysis; SSVC rates exploitation as none and technical impact as partial, placing this in the moderate real-world priority tier despite the C:H CVSS rating.
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.
Out-of-bounds read in Microsoft Office Word and associated Microsoft 365 products allows local information disclosure when a user opens a specially crafted document. Affecting a broad range of Microsoft Office versions across Windows and macOS - including Office 2019, LTSC 2021/2024, Microsoft 365 Apps for Enterprise, Office 365 for Mac, and SharePoint Server 2016/2019/Subscription Edition - an attacker with no prior system privileges must socially engineer a victim into opening a malicious file to trigger memory disclosure. No public exploit identified at time of analysis; EPSS is 0.39% (31st percentile) and SSVC confirms exploitation status as none and the attack as non-automatable.
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.
Out-of-bounds read in Microsoft Office exposes high-confidentiality memory contents to a local, unauthenticated attacker who can induce a user to open a crafted document. The flaw affects a wide swath of Office and SharePoint products across Windows and Mac platforms, including Microsoft 365 Apps for Enterprise, Office 2016 through LTSC 2024, Office 365 for Mac, and SharePoint Server 2016 through the Subscription Edition. No public exploit has been identified at time of analysis, EPSS is low at 0.50% (39th percentile), and CISA SSVC rates exploitation as none and the flaw as non-automatable, placing this firmly in a patch-and-monitor risk tier rather than an emergency-response tier.
Out-of-bounds memory read in Microsoft Office and SharePoint exposes sensitive in-process data when a user opens a specially crafted document on a local machine. Affecting Microsoft 365 Apps for Enterprise, Office 2016 through LTSC 2024 (Windows and macOS), and SharePoint Server 2016 through Subscription Edition, the CWE-125 flaw allows an unauthorized attacker to read beyond allocated buffer boundaries, achieving High confidentiality impact with no integrity or availability consequence. No public exploit exists and no active exploitation is confirmed at time of analysis - CISA SSVC rates exploitation status as none - making this a routine-priority patch despite the broad product coverage.
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.
Out-of-bounds read in Microsoft Office and SharePoint Server exposes local memory contents to an unauthorized attacker, resulting in information disclosure. The vulnerability (CWE-125) is triggered when a user opens a specially crafted Office document, making exploitation dependent on user interaction rather than remote network access. No active exploitation has been confirmed - CISA KEV does not list this CVE, SSVC rates exploitation as none, and EPSS probability sits at 0.51% (40th percentile), collectively indicating low real-world threat activity despite the wide deployment footprint of affected products.
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 information disclosure in Microsoft Office and SharePoint via an integer overflow (CWE-190) exposes sensitive data to low-privileged local attackers across a broad range of Office versions on both Windows and Mac platforms. The CVSS vector (AV:L/PR:L) confirms exploitation requires an existing foothold on the target machine, limiting real-world impact to post-compromise scenarios or insider threats. No active exploitation is confirmed by CISA KEV, and the EPSS score of 0.40% (32nd percentile) combined with SSVC exploitation status of 'none' indicates this is not currently being weaponized in the wild.
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.
Out-of-bounds read (CWE-125) in Microsoft Office's file parsing logic exposes potentially sensitive in-memory data to a local attacker when a victim opens a specially crafted document, affecting Windows and macOS Office editions as well as Microsoft SharePoint Server. The CVSS 5.5 Medium score reflects a local-only attack vector with mandatory user interaction, confining impact to information disclosure with no integrity or availability consequence. No public exploit code exists, CISA SSVC classifies exploitation as 'none' with no automation potential, and the EPSS of 0.51% (40th percentile) confirms low current exploitation probability.
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.
Out-of-bounds read in Microsoft Excel's file parsing engine exposes sensitive memory contents when a victim opens a specially crafted workbook, affecting Excel 2016 through Office LTSC 2024 and Office Online Server across both Windows and macOS platforms. The CVSS vector (AV:L/UI:R/C:H/I:N/A:N) confirms impact is limited to confidentiality loss - no code execution results - and requires local user interaction to trigger. No public exploit has been identified and CISA has not listed this in KEV; with an EPSS of 0.46% and SSVC exploitation status of none, this is appropriate for standard patch cycle prioritization rather than emergency response.
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.
Out-of-bounds read in Microsoft Excel and related Office products exposes adjacent process memory to local information disclosure when a user opens a specially crafted spreadsheet file. The flaw spans a broad set of Microsoft Office versions across Windows and macOS - including Excel 2016, Office 2019, LTSC 2021/2024, Microsoft 365 Apps for Enterprise, and Office Online Server - with vendor-released patches now available for all affected builds. No active exploitation has been confirmed by CISA KEV, and EPSS places exploitation probability at 0.35% (27th percentile), consistent with SSVC's assessment of no current exploitation and non-automatable delivery.
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.
Untrusted pointer dereference in Microsoft Excel exposes sensitive in-process memory to a local attacker across virtually the entire Office product family - Excel 2016 through Office LTSC 2024 on Windows and macOS, plus Office Online Server. An attacker must deliver a crafted spreadsheet and induce the victim to open it; successful exploitation yields high confidentiality impact with no integrity or availability effect. No public exploit code or active exploitation has been identified; EPSS at 0.46% (37th percentile) and SSVC exploitation status of 'none' are consistent with low real-world risk at this time.
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.
Information disclosure in Microsoft Office (Microsoft 365 Apps, Office 2016/2019, Office LTSC 2021/2024, and Office for Mac) via an out-of-bounds read (CWE-125) lets an attacker leak sensitive memory contents when a victim opens a maliciously crafted document. The CVSS 3.1 base score is 7.1 (AV:L/AC:L/PR:N/UI:R), reflecting local exploitation that requires user interaction but no prior authentication. Microsoft is the reporting source and has published a fix; there is no public exploit identified at time of analysis and the issue is not listed in CISA KEV.
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.
Out-of-bounds read in Microsoft Excel's spreadsheet parser (CWE-125) exposes affected systems to both local information disclosure and application crash when a victim opens a specially crafted file, spanning Excel 2016 through Office LTSC 2024 and Office 365 for Mac. The CVSS vector (AV:L/UI:R/A:H) reveals that while the CVE description emphasizes information disclosure, the primary real-world impact is application availability - the invalid memory read can crash Excel (A:H), with incidental memory content leakage (C:L) as a secondary effect. No public exploit code has been identified at time of analysis and CISA SSVC assigns exploitation status of none, consistent with a low EPSS score of 0.31% at the 23rd percentile.
Heap-based buffer overflow in Microsoft Office Excel triggers a local information disclosure when a target user opens a maliciously crafted document. Affecting Excel 2016 through Office LTSC 2024 and Microsoft 365 Apps for Enterprise on both Windows and macOS, the vulnerability yields only limited confidentiality impact (C:L) with no integrity or availability consequence, placing it in the Low severity tier at CVSS 3.3. No public exploit code exists and no active exploitation has been confirmed - CISA's SSVC framework rates exploitation as none, automatable as no, and technical impact as partial, consistent with the low EPSS probability of 0.27% (19th percentile).
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).
External control of file name or path (CWE-73) in Microsoft Office Word enables network-based information disclosure when a victim opens a specially crafted document, affecting Word 2016, Office 2019, LTSC 2021/2024, and Microsoft 365 Apps for Enterprise. An unauthenticated remote attacker can exploit this to coerce Word into resolving an attacker-controlled file path - likely a UNC path - causing an outbound network request that leaks sensitive data such as NTLM credentials. No active exploitation is confirmed (not listed in CISA KEV), and the EPSS score of 0.05% at the 14th percentile indicates negligible real-world exploitation activity at time of analysis.
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.