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Heap-based buffer overflow in Microsoft Office Excel allows a local attacker to execute arbitrary code with the privileges of the victim user by convincing them to open a specially crafted Excel file. The vulnerability spans a wide range of currently supported Office releases - Excel 2016 through Microsoft 365 Apps for Enterprise, plus Office for Mac editions - making the attack surface broad. No public exploit or CISA KEV listing has been identified at time of analysis, but Microsoft has issued patches across all affected channels.
Heap-based buffer overflow in Microsoft Office Excel enables local code execution when a victim opens a specially crafted Excel file. Affected products span Excel 2016 through Microsoft 365 Apps for Enterprise and LTSC 2024 editions, including Mac variants. No public exploit code or CISA KEV listing has been identified at time of analysis, and Microsoft has released patches across all affected product lines.
Out-of-bounds read in Microsoft Excel's file-parsing engine allows code execution when a victim opens a specially crafted workbook. Affected builds span Excel 2016 through Office LTSC 2024 and their Mac equivalents, making the exposure broad across both perpetual-license and subscription deployments. No public exploit code has been identified at time of analysis, but Microsoft has released patched builds for all affected product lines.
Out-of-bounds read (CWE-125) in Microsoft Office Excel's file-parsing engine enables local code execution when a victim opens a specially crafted spreadsheet. Affects a wide range of Microsoft Office products from version 2016 through LTSC 2024 and Microsoft 365 Apps for Enterprise, on both Windows and Mac platforms. No public exploit identified at time of analysis, but the low attack complexity combined with full confidentiality, integrity, and availability impact makes phishing-delivered document lures a realistic and proven delivery vector.
Use-after-free code execution in Microsoft Excel allows a local unauthenticated attacker to execute arbitrary code at the privilege level of the victim user by enticing them to open a specially crafted workbook file. Affected products span the full current Office portfolio: Excel 2016, Office 2016/2019, Office LTSC 2021/2024 (Windows and Mac), and Microsoft 365 Apps for Enterprise. No public exploit or CISA KEV listing is identified at time of analysis, but Microsoft has released patches addressing all affected version lines.
Stack-based buffer overflow in Microsoft Office Excel enables arbitrary code execution when a user opens a specially crafted workbook. The vulnerability (CWE-121) spans a wide range of Office suites from 2016 through 2024 LTSC on both Windows and macOS. No public exploit code or active exploitation (CISA KEV) has been identified at time of analysis, but the broad affected surface - including Microsoft 365 Apps for Enterprise - makes patching a priority for enterprise environments.
Remote code execution in Microsoft Office Word arises from a heap-based buffer overflow (CWE-122) triggered when a user opens a specially crafted document. The flaw affects a broad swath of Office product lines - Microsoft 365 Apps for Enterprise, Office 2016/2019/LTSC 2021/LTSC 2024 on Windows, and Office for Mac variants - with vendor patches available at specific build thresholds. No public exploit code or CISA KEV listing exists at time of analysis, placing this in the category of patched-but-unconfirmed-exploited, though the enormous deployment footprint and phishing-friendly delivery model elevate real-world priority.
Heap-based buffer overflow in Microsoft Excel enables local code execution with full user-level privileges when a victim opens a specially crafted workbook file. Affected products span the entire current Office portfolio - Excel 2016 through Office LTSC 2024 and Microsoft 365 Apps for Enterprise - on both Windows and macOS. No public exploit code has been identified and this vulnerability is not listed in the CISA KEV catalog at time of analysis, but the broad install base and file-delivery attack path make it a meaningful phishing vector.
Double-free memory corruption (CWE-415) in Microsoft Excel enables local arbitrary code execution across a wide range of Office product lines including Excel 2016, Office 2019, LTSC 2021/2024, and Microsoft 365 Apps for Enterprise. An attacker who delivers a specially crafted Excel workbook and convinces a target user to open it can achieve arbitrary code execution in the user's security context, with high confidentiality, integrity, and availability impact. Vendor-released patches are available for all Windows Office variants; no public exploit and no CISA KEV listing have been identified at the time of analysis.
Integer overflow in Microsoft Excel's file parsing engine allows an unauthenticated attacker who delivers a specially crafted Excel workbook to execute arbitrary code with the privileges of the victim user upon file opening. The vulnerability spans Excel 2016 through Microsoft 365 Apps for Enterprise and LTSC variants on both Windows and macOS. No public exploit code has been identified at time of analysis, and Microsoft has issued patches across all affected product lines.
Heap-based buffer overflow (CWE-122) in Microsoft Office Excel allows a local, unauthenticated attacker to execute arbitrary code with the privileges of the victim user by convincing them to open a specially crafted Excel file. The vulnerability affects a broad range of Office releases spanning Excel 2016 through Office LTSC 2024, on both Windows and macOS. Microsoft has released patches addressing this flaw; no public exploit code or CISA KEV listing has been identified at time of analysis.
Heap-based buffer overflow in Microsoft Office Excel enables local code execution when a victim opens a specially crafted Excel file. Affected products span nearly every current Office release line - Excel 2016, Office 2019, Office LTSC 2021 and 2024 (Windows and Mac), Microsoft 365 Apps for Enterprise, Office 365 for Mac, and Office Online Server. An attacker who tricks a user into opening a malicious workbook can achieve full code execution at the victim's privilege level, with high confidentiality, integrity, and availability impact. No public exploit code has been identified at time of analysis, and no CISA KEV listing exists.
Heap-based buffer overflow in Microsoft Office Excel enables local code execution across nine distinct Office SKUs ranging from Excel 2016 through Microsoft 365 Apps for Enterprise. Exploitation requires a victim to open a specially crafted Excel file, making phishing and malicious-document delivery the primary attack vectors. Microsoft has released patched builds for all affected Windows variants; Mac-platform fixed builds should be confirmed via the MSRC advisory. No public exploit or CISA KEV listing has been identified at time of analysis.
Heap-based buffer overflow in Microsoft Office Excel enables local code execution when a user opens a specially crafted workbook. The vulnerability (CWE-122) affects all major Office perpetual and subscription editions across Windows and Mac, spanning Excel 2016 through Microsoft 365 Apps for Enterprise. No public exploit code has been identified at time of analysis, but the file-open trigger and full C/I/A impact make this a high-priority patch for organizations relying on email-delivered spreadsheets.
Stack-based buffer overflow in Microsoft Office Excel enables arbitrary code execution at the current user's privilege level when a victim opens a specially crafted workbook file. The vulnerability spans Excel 2016 through Microsoft 365 Apps for Enterprise and LTSC 2024 across both Windows and Mac platforms, making the potential victim population extremely large. Microsoft has released patches via MSRC; no public exploit code or CISA KEV listing has been identified at time of analysis.
Heap-based buffer overflow in Microsoft Office Excel enables local code execution when a victim opens a specially crafted Excel file. Affected products span the full Office portfolio - Excel 2016, Office 2019, 2021, 2024 LTSC editions, and Microsoft 365 Apps for Enterprise on both Windows and Mac. An attacker who can convince a user to open a malicious workbook can achieve full C:H/I:H/A:H compromise of the victim's session. No public exploit or CISA KEV listing has been identified at time of analysis, and Microsoft has released patched builds.
Stack-based buffer overflow in Microsoft Office Excel enables local code execution when a user opens a specially crafted workbook, affecting all major Office product lines from Excel 2016 through Office LTSC 2024 and Microsoft 365 Apps for Enterprise on both Windows and Mac platforms. The vulnerability carries a CVSS 7.8 score reflecting high CIA impact against the Office process, with mandatory user interaction (opening the malicious file) as the sole prerequisite. Microsoft has released patches for all supported versions; no public exploit code or CISA KEV listing has been identified at time of analysis.
Heap-based buffer overflow in Microsoft Office Excel enables local code execution across all major Office release tracks when a victim opens a maliciously crafted spreadsheet file. The vulnerability is rooted in improper heap memory management during Excel's file parsing routines (CWE-122), resulting in full compromise of confidentiality, integrity, and availability on the victim system. No public exploit code has been identified at time of analysis, but the breadth of affected versions - spanning Office 2016 through Microsoft 365 and Mac variants - makes this a high-priority patch target for enterprise environments.
Heap-based buffer overflow in Microsoft Office Word enables unauthenticated remote attackers to achieve arbitrary code execution at the privilege level of the target user. The vulnerability (CWE-122) is triggered when a victim opens a specially crafted Word document, covering Word 2016, Office 2019, Office LTSC 2021/2024, and Microsoft 365 Apps for Enterprise across both Windows and Mac platforms. Microsoft has released patches; no public exploit code or CISA KEV listing has been identified at time of analysis, though the broad product coverage and high CVSS of 8.8 make this a priority patching target.
Remote code execution in Microsoft Office Word via a double-free memory corruption flaw (CWE-415) allows a network-accessible, unauthenticated attacker to achieve full system compromise with high confidentiality, integrity, and availability impact. The vulnerability spans seven distinct product/version combinations - Word 2016, Office 2019, LTSC 2021, LTSC 2024, Microsoft 365 Apps for Enterprise on Windows, and multiple Mac editions - making the affected surface unusually broad. No public exploit code or CISA KEV listing has been identified at time of analysis, though the low attack complexity and wide deployment footprint make rapid patching a clear priority.
Remote code execution in Microsoft Office Word via a heap-based buffer overflow (CWE-122) allows an unauthenticated network attacker to fully compromise a victim system upon opening a crafted document. All major Office licensing tracks are affected on both Windows and macOS, spanning Office 2016 through Microsoft 365 Apps for Enterprise. No CISA KEV listing or public exploit code is referenced in available data, but the low-complexity, no-privileges-required vector with full confidentiality, integrity, and availability impact makes this a critical priority for enterprise patch cycles.
Remote code execution via use-after-free (CWE-416) in Microsoft Office Outlook allows a network-based attacker to execute arbitrary code on a victim's system when the user opens or previews malicious content. The vulnerability affects a broad range of Microsoft Office versions across Windows and macOS, including Microsoft 365 Apps for Enterprise, Office LTSC 2021/2024, Office 2019, and Word 2016. No public exploit identified at time of analysis, but a vendor patch is available; the CVSS score of 8.8 (AV:N/AC:L/PR:N/UI:R) reflects the high severity, tempered only by the requirement for user interaction.
Out-of-bounds write (CWE-787) in multiple Microsoft Office versions enables remote code execution when a victim opens a specially crafted Office document. The vulnerability affects a broad matrix of products spanning Microsoft 365 Apps for Enterprise, Office LTSC 2021/2024, Office 2016/2019, and their Mac counterparts, covering virtually the entire modern Office product line. Vendor patches have been released via MSRC; no public exploit or CISA KEV listing has been identified at time of analysis, but the network-deliverable, low-complexity nature and full C/I/A impact make this a high-priority patching target.
Heap-based buffer overflow in Microsoft Office Word's document parsing engine enables remote unauthenticated attackers to execute arbitrary code on target systems when a user opens a specially crafted document. The vulnerability affects a wide range of Microsoft Office releases - Word 2016, Office 2019, LTSC 2021, LTSC 2024, Office 365 for Mac, and Microsoft 365 Apps for Enterprise - making the attack surface extremely broad. Microsoft has released patches across all affected product lines; no public exploit or CISA KEV listing has been identified at time of analysis, though UI:R interaction remains the sole barrier to exploitation.
Out-of-bounds read in Microsoft Office Excel enables remote code execution when a victim opens a crafted Excel workbook, achieving full C/I/A compromise on the target system. The vulnerability spans every major Office product line from Excel 2016 through Microsoft 365 Apps for Enterprise on both Windows and macOS. Vendor-released patches are available for all Windows product lines with specific fixed builds enumerated; no public exploit code or CISA KEV listing has been identified at time of analysis.
Heap-based buffer overflow in Microsoft Office Word enables remote unauthenticated code execution when a victim opens a specially crafted document. Affects the full breadth of Office deployments - Microsoft 365 Apps for Enterprise, Office 2019, Office LTSC 2021/2024, Word 2016, and their Mac equivalents - making the attack surface extremely wide. No public exploit identified at time of analysis, but the CVSS 8.8 vector (AV:N/AC:L/PR:N/UI:R) with full C/I/A impact places this firmly in priority patching territory for enterprise environments.
Use-after-free in Microsoft Word enables remote code execution when a victim opens or interacts with a specially crafted document. The CVSS vector (AV:N/AC:L/PR:N/UI:R) reflects delivery over the network with no authentication required and only a single user interaction - opening a malicious file - as the prerequisite. Full confidentiality, integrity, and availability compromise is achievable on the affected endpoint, spanning Microsoft Word 2016, Office 2019, Office LTSC 2021/2024, Microsoft 365 Apps for Enterprise, and their Mac counterparts. No public exploit or CISA KEV listing has been identified at time of analysis; vendor patch is available.
Heap-based buffer overflow in Microsoft Word's document-parsing engine, arising from a numeric truncation error, enables remote code execution when a user opens a specially crafted Word document. The flaw spans a wide matrix of Office SKUs on both Windows and Mac - including Office 2016, 2019, LTSC 2021/2024, Microsoft 365 Apps for Enterprise, and Mac variants - and carries CVSS 8.8 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H), reflecting full compromise with the only friction being the required user interaction. No public exploit code or CISA KEV listing has been identified at time of analysis, but the ubiquity of the Office install base makes this a high-priority patching target.
Remote code execution in Microsoft Office Word exposes virtually every Windows and macOS Office release channel - Word 2016, Office 2019, LTSC 2021/2024, 365 Apps for Enterprise, and Office for Mac - to full system compromise via a specially crafted document. The heap-based buffer overflow (CWE-122) fires during document parsing with no authentication required from the attacker, only standard user interaction to open the malicious file, yielding C:H/I:H/A:H impact under a low-complexity attack path. Microsoft has issued patches across all Windows release branches and flags macOS editions as affected; no public exploit or CISA KEV listing has been identified at time of analysis.
Heap-based buffer overflow in Microsoft Word (Microsoft 365 Apps for Enterprise, Office 2016, Office 2019, Office LTSC 2021, Office LTSC 2024, and the corresponding macOS Office builds) enables arbitrary code execution in the security context of the user who opens an attacker-crafted Word document. The attack is client-side: a victim must open or preview a malicious file delivered by email, web download, or a shared location, and no authentication or elevated privileges on the target are required (PR:N), though our assessment sets the interaction requirement at UI:R despite the UI:N flag in the published vector. No public exploit code has been identified at time of analysis and EPSS is low (0.95%, 59th percentile), but CISA SSVC rates the technical impact as total with automatable exploitation and vendor patches are available, making this a genuinely notable issue rather than an emergency.
Remote code execution in Microsoft Office Outlook stems from a heap-based buffer overflow (CWE-122) that lets an unauthenticated network attacker run arbitrary code, per Microsoft's MSRC advisory and CVSS 9.8 (AV:N/AC:L/PR:N/UI:N). The flaw affects Office 2019, Office LTSC 2021/2024, Microsoft 365 Apps for Enterprise, Word 2016, and Office for Mac builds; Microsoft has released fixed builds. No public exploit identified at time of analysis, but the critical severity and no-interaction network vector make it a high patch priority.
Remote code execution in Microsoft Office Word via a use-after-free (CWE-416) memory corruption flaw allows an unauthenticated network attacker to compromise a target system when the victim opens a specially crafted document. All major release tracks are affected - Office 2019, LTSC 2021, LTSC 2024, and Microsoft 365 Apps for Enterprise on both Windows and macOS - with fixed builds published by Microsoft. No CISA KEV listing or public exploit has been identified at time of analysis, but the CVSS 8.8 PR:N/UI:R profile is characteristic of document-delivery RCE bugs historically prioritized by both criminal and nation-state actors for initial access.
Heap-based buffer overflow in Microsoft Office allows unauthenticated remote attackers to execute arbitrary code on a victim's system when the victim opens a specially crafted Office document. Multiple product lines are affected, including Microsoft 365 Apps for Enterprise, Office LTSC 2021/2024, Office 2016/2019, and Mac variants of each. With a CVSS score of 8.8 and full confidentiality, integrity, and availability impact, this is a high-severity code execution path; no public exploit code or CISA KEV listing has been identified at time of analysis, and a vendor-released patch is available.
Stack-based buffer overflow (CWE-121) in Microsoft Office Word enables a remote unauthenticated attacker to execute arbitrary code on a victim's machine by delivering a specially crafted Word document and inducing the target to open it. The vulnerability spans a wide swath of Office product lines - from Word 2016 through Office LTSC 2024 and Microsoft 365 Apps for Enterprise - on both Windows and macOS platforms. Microsoft has released patches across Windows product lines; no public exploit has been identified at time of analysis and the vulnerability is not listed in the CISA KEV catalog.
Remote code execution in Microsoft Office Word allows an unauthenticated network attacker to execute arbitrary code on a victim's machine by delivering a specially crafted document that triggers a null pointer dereference. Affected versions span Microsoft Word 2016, Office 2019, Office LTSC 2021, Office LTSC 2024, Microsoft 365 Apps for Enterprise, and Office LTSC for Mac variants. Microsoft has released patches across all affected product lines; no public exploit or CISA KEV listing has been identified at time of analysis.
Heap-based buffer overflow (CWE-122) in multiple Microsoft Office versions enables remote code execution when a victim opens a specially crafted document. The CVSS vector (AV:N/AC:H/PR:N/UI:R) confirms network-based delivery without attacker authentication, but exploitation requires high attack complexity and active user interaction - consistent with a maliciously crafted Office file that triggers a memory corruption condition in Office's document parsing subsystem. Affected builds span Office 2019, LTSC 2021, LTSC 2024, Microsoft 365 Apps for Enterprise, and Mac-platform variants; patched build numbers are available for Windows-based SKUs per EUVD-2026-73290, while Mac SKU fix versions are not specified in available data.
Heap-based buffer overflow in Microsoft Office Word enables remote unauthenticated attackers to achieve full code execution (C:H/I:H/A:H) by delivering a specially crafted Word document to a target user across all major Office suite versions on both Windows and macOS. Affected products span Microsoft 365 Apps for Enterprise, Office 2019, Office LTSC 2021, Office LTSC 2024, and Word 2016, with fixed version thresholds confirmed by EUVD. No public exploit or CISA KEV listing identified at time of analysis, but the network-vector, no-auth delivery model is highly attractive for phishing-based initial access campaigns. Vendor-released patch is available via Microsoft Security Response Center.
Heap-based buffer overflow in Microsoft Office Word's document-parsing engine enables remote code execution when a victim opens a specially crafted file, yielding full confidentiality, integrity, and availability compromise of the user's session. Affected products span Microsoft 365 Apps for Enterprise, Office 2019, Office LTSC 2021, Office LTSC 2024, Word 2016, and corresponding macOS editions across both x86 and x64 architectures. No public exploit identified at time of analysis, but the AV:N/PR:N/UI:R CVSS pattern is historically associated with rapid phishing-campaign weaponization for Office document vulnerabilities.
Remote code execution via use-after-free in Microsoft Office PowerPoint enables a network-positioned, unauthenticated attacker to execute arbitrary code on a victim's system when the victim opens a crafted PowerPoint file. The flaw spans the entire current Office product family including Microsoft 365 Apps for Enterprise, Office LTSC 2021/2024, PowerPoint 2016, Office 2019, and their Mac counterparts. No public exploit code or active CISA KEV listing has been identified at time of analysis, but the broad product coverage and lack of privilege requirements make this a high-priority patch target.
Use-after-free in Microsoft Office PowerPoint enables remote code execution when a victim opens a specially crafted PowerPoint document. The vulnerability affects PowerPoint 2016, 2019, Office LTSC 2021, LTSC 2024, Microsoft 365 Apps for Enterprise, and Office for Mac across multiple build versions, spanning virtually the entire active Office install base. Vendor patches have been released; no public exploit or CISA KEV listing has been identified at time of analysis.
Stack-based buffer overflow in Microsoft Office Word's document parsing engine allows remote unauthenticated attackers to execute arbitrary code with the privileges of the victim user when a specially crafted Word document is opened. The flaw (CWE-121) spans Microsoft 365 Apps for Enterprise, Office 2019, Office LTSC 2021, Office LTSC 2024, and Word 2016 on both Windows and macOS. Microsoft has released patched builds; no public exploit code and no CISA KEV listing have been identified at time of analysis.
Stack-based buffer overflow in Microsoft Word (CWE-121) enables remote code execution by enticing a user to open a maliciously crafted document, with full compromise of confidentiality, integrity, and availability. Affected products span Office 2019, 2021, and 2024 LTSC on both Windows (x86/x64) and macOS, as well as Microsoft 365 Apps for Enterprise and Word 2016. Microsoft has released patches across all affected product lines; no public exploit code has been identified and CISA KEV confirmation is absent at time of analysis.
Stack-based buffer overflow in Microsoft Word's document-parsing engine enables network-delivered remote code execution with full system impact across all current Microsoft Office product lines on Windows and macOS. The vulnerability (CWE-121) is triggered when a user opens a specially crafted Word document, overflowing a fixed-size stack buffer and allowing an attacker to hijack control flow and execute arbitrary code in the context of the logged-in user. Affected versions span Word 2016 through Microsoft 365 Apps for Enterprise and LTSC editions on both x86/x64 Windows and macOS; patches are available per vendor advisory, and no public exploit code has been identified at time of analysis.
Remote code execution in Microsoft Office PowerPoint stems from a use-after-free memory corruption flaw (CWE-416) that enables network-based attackers to execute arbitrary code when a victim opens a crafted presentation file. All major Office editions are affected - Microsoft 365 Apps for Enterprise, Office LTSC 2021 and 2024, Office 2019, PowerPoint 2016, and multiple macOS variants - spanning a broad enterprise and consumer installed base. No public exploit or CISA KEV listing has been identified at time of analysis; Microsoft has released patches across all affected Windows product lines.
Heap-based buffer overflow in Microsoft Office Word's document parsing engine enables an unauthenticated remote attacker to achieve full code execution on a victim's system when a specially crafted Word document is opened. The flaw spans all major currently-supported Office release channels on both Windows and macOS, including Microsoft 365 Apps for Enterprise, Office 2019/2021/2024 LTSC, Word 2016, and macOS editions. No public exploit or CISA KEV listing has been identified at time of analysis, but the low attack complexity, broad product footprint, and well-understood Office document exploitation tradecraft make this a high-priority patching candidate.
Remote code execution in Microsoft Office via a use-after-free (CWE-416) memory corruption flaw allows a network-adjacent or remote attacker to execute arbitrary code on the victim's machine. The attack is client-side: the attacker delivers a maliciously crafted Office document, which when opened by the user triggers the UAF condition. Affected products span the full Office family including LTSC 2021, LTSC 2024, Office 2019, Microsoft 365 Apps for Enterprise, and Mac variants; a vendor patch is available.
Heap-based buffer overflow (CWE-122) in Microsoft Office Word enables unauthenticated remote code execution when a victim opens a specially crafted document. All currently supported Office product lines are affected across Windows (x86/x64) and macOS, including Microsoft 365 Apps for Enterprise, Office 2016, 2019, 2021 LTSC, 2024 LTSC, and Microsoft 365 for Mac. No public exploit code or CISA KEV listing has been identified at time of analysis, but the breadth of affected products and full C/I/A impact make this a high-priority patching item across virtually all enterprise environments.
External file path control in Microsoft Office Word enables local code execution with full confidentiality, integrity, and availability impact when a target user opens a specially crafted document. All major Office release tracks are affected across Windows and macOS - Office 2016, 2019, 2021 LTSC, LTSC 2024, and Microsoft 365 Apps for Enterprise. No public exploit has been identified at time of analysis, and vendor patches are available through the Office security release channel.
PowerPoint's improper input validation (CWE-20) exposes local users to high-impact compromise when a maliciously crafted presentation file is opened, with the official CVSS vector asserting high confidentiality, integrity, and availability impact - a notable divergence from the description's characterization as information disclosure only. The attack requires no attacker privileges but mandates user interaction, fitting a phishing-and-open-file threat model. No public exploit code exists and this vulnerability is not listed in the CISA KEV catalog at time of analysis.
Use-after-free memory corruption in Microsoft Office Word enables local code execution when a user opens a specially crafted document. The CVSS vector (AV:L/AC:L/PR:N/UI:R) confirms this is a social-engineering-dependent attack - no system privileges are required, but the victim must open a malicious file, making phishing or drive-by document delivery the likely delivery mechanism. All three impact dimensions (Confidentiality, Integrity, Availability) are rated High, yielding a 7.8 CVSS score; no public exploit or CISA KEV listing has been identified at time of analysis.
Stack-based buffer overflow in Microsoft Office Excel enables local arbitrary code execution when a user opens a specially crafted file. The vulnerability (CWE-121) carries a CVSS 7.8 High score, with high confidentiality, integrity, and availability impact upon successful exploitation. No active exploitation has been confirmed (not listed in CISA KEV), and no public exploit code is identified at time of analysis.
Stack-based buffer overflow in Microsoft Office Excel enables local code execution when a user opens a crafted file. The vulnerability (CWE-121) is triggered through user interaction with malicious content, requiring no privileges on the target system beyond access to run Excel. No public exploit code or CISA KEV listing is identified at time of analysis, though the high-impact CVSS 7.8 score reflects full compromise of confidentiality, integrity, and availability upon successful exploitation.
Heap-based buffer overflow in Microsoft Office Excel enables local code execution with full system-level impact when a victim opens a specially crafted Excel file. The flaw (CWE-122) resides in Excel's file parsing logic, where malformed input causes a heap memory region to be overwritten, redirecting execution flow. No public exploit has been identified at time of analysis, and the vulnerability has not appeared in CISA's Known Exploited Vulnerabilities catalog, though the Microsoft Security Response Center has issued an advisory.
Out-of-bounds read in Microsoft Office Excel enables local code execution when a user opens a specially crafted spreadsheet file. The vulnerability (CWE-125) carries a CVSS 7.8 score with high impact across confidentiality, integrity, and availability, and is reported directly by Microsoft via the MSRC update guide. No public exploit code or CISA KEV listing has been identified at time of analysis, but the low attack complexity (AC:L) indicates reliable exploitability once a working exploit is developed.
Heap-based buffer overflow in Microsoft Office Excel enables local code execution when a user opens a specially crafted Excel file. The vulnerability triggers during file parsing, allowing an attacker who can deliver a malicious document to execute arbitrary code with the privileges of the logged-in user. No KEV listing or public exploit code has been identified at time of analysis, but the local-execution-via-document vector makes this a meaningful phishing and spear-phishing enabler.
Type confusion (CWE-843) in Microsoft Office Excel enables local code execution when a victim opens a specially crafted file. The CVSS vector (AV:L/AC:L/PR:N/UI:R) confirms the attack is file-based: no attacker privileges are required, but the target user must open a malicious document, making this a high-impact phishing-delivery vector. No public exploit code and no CISA KEV listing are identified at time of analysis, but the full confidentiality, integrity, and availability impact (C:H/I:H/A:H) makes this a critical priority for organizations where Excel is deployed.
Untrusted pointer dereference in Microsoft Office Excel enables local arbitrary code execution when a user opens a crafted document. The flaw (CWE-822) allows an attacker who can deliver a malicious file to achieve full code execution with high confidentiality, integrity, and availability impact on the victim's system. No public exploit has been identified at time of analysis, and Microsoft has not listed this in CISA's Known Exploited Vulnerabilities catalog.
Heap-based buffer overflow in Microsoft Office Excel enables local code execution when a user opens a specially crafted file, granting full confidentiality, integrity, and availability compromise of the affected system. The CVSS vector (AV:L/AC:L/PR:N/UI:R) confirms this is a document-triggered exploit requiring no attacker privileges but demanding victim interaction - a profile consistent with malicious email attachment or drive-by download campaigns. No public exploit code or CISA KEV listing has been identified at time of analysis, though Excel's ubiquity makes this a high-value target class.
Out-of-bounds write (CWE-787) in Microsoft Office Excel enables local code execution when a user opens a specially crafted Excel file, yielding full confidentiality, integrity, and availability impact at CVSS 7.8. The attack is file-delivery based - typical phishing or drive-by download - requiring no system privileges from the attacker but requiring the victim to open the malicious document. No public exploit code or CISA KEV listing has been identified at time of analysis.
Heap-based buffer overflow in Microsoft Office Excel enables local code execution when a user opens a specially crafted Excel file. The CVSS vector (AV:L/PR:N/UI:R) confirms the attack requires no system privileges but does require user interaction - the classic malicious-document delivery pattern. Full confidentiality, integrity, and availability compromise results, making this a high-severity threat against any organization reliant on Excel for document workflows. No public exploit or CISA KEV listing has been identified at time of analysis.
Heap-based buffer overflow in Microsoft Office Excel enables local code execution with full system impact when a victim opens a maliciously crafted workbook. The root cause is a numeric truncation error (CWE-122) in Excel's file parsing logic, where an integer value is truncated before being used to size a heap allocation, resulting in an undersized buffer that can be overflowed. No public exploit code has been identified at time of analysis, and there is no CISA KEV listing, but the high CVSS score of 7.8 and full confidentiality, integrity, and availability impact make this a meaningful risk for organizations relying on Excel file workflows.
Type confusion (CWE-843) in Microsoft Office Excel enables local code execution by an unauthenticated attacker when a victim opens a specially crafted Excel document. The CVSS:3.1 vector (AV:L/AC:L/PR:N/UI:R) confirms this is a file-borne attack requiring user interaction but no attacker privileges, with full High/High/High C/I/A impact. No public exploit code or CISA KEV listing has been identified at time of analysis, though the memory corruption tag suggests the type confusion leads to exploitable heap or stack corruption.
Heap-based buffer overflow in Microsoft Office Excel enables local code execution when a victim opens a specially crafted workbook, resulting in full compromise of confidentiality, integrity, and availability on the local system. The CVSS 3.1 vector (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) confirms no attacker privileges are required, though user interaction - opening the malicious file - is a hard prerequisite. No public exploit code or CISA KEV listing has been identified at time of analysis; the issue is confirmed by Microsoft's Security Response Center via secure@microsoft.com.
Heap-based buffer overflow in Microsoft Office Excel enables local code execution when a victim opens a specially crafted Excel file. The attack requires no privileges from the attacker but does require user interaction - consistent with a malicious document delivery vector - and carries high impact across confidentiality, integrity, and availability. No active exploitation (KEV) or public exploit code has been identified in the provided intelligence at time of analysis.
Heap-based buffer overflow in Microsoft Office Excel enables local code execution when a victim opens a specially crafted file. The CVSS vector (AV:L/PR:N/UI:R) confirms exploitation requires no prior privileges but depends on user interaction - consistent with a malicious document delivery scenario. No public exploit code or CISA KEV listing has been identified at time of analysis, though the full confidentiality, integrity, and availability impact (C:H/I:H/A:H) makes this a high-severity concern for any environment running unpatched Excel installations.
Heap-based buffer overflow in Microsoft Office Excel enables local code execution when a user opens a specially crafted Excel file. An unauthenticated attacker (per CVSS PR:N) delivers a malicious document that triggers the overflow upon interaction (UI:R), achieving full confidentiality, integrity, and availability compromise on the victim system. No public exploit or KEV listing has been identified at time of analysis, though the attack pattern is well-understood and document-based Excel exploits have a long operational history.
Stack-based buffer overflow in Microsoft Office Excel enables arbitrary code execution on the victim's local machine when a specially crafted Excel file is opened. The vulnerability carries a CVSS base score of 7.8 with high confidentiality, integrity, and availability impact, affecting the victim's user-level security context. No public exploit has been identified at time of analysis, and the vulnerability is not listed in the CISA KEV catalog, reducing immediacy compared to actively exploited file-format parsing flaws.
Heap-based buffer overflow in Microsoft Office Excel enables local code execution when a victim opens a maliciously crafted file. The vulnerability (CWE-122) corrupts heap memory in Excel's parsing logic, allowing an attacker to achieve full control over confidentiality, integrity, and availability of the affected system. No public exploit or active exploitation has been identified at time of analysis, but the CVSS score of 7.8 with high impact across all three CIA triad pillars makes this a meaningful priority for organizations running affected Excel versions.
Out-of-bounds read in Microsoft Office Excel enables local code execution when a user opens a specially crafted workbook file. The CVSS vector (AV:L/AC:L/PR:N/UI:R) confirms file-based delivery requiring victim interaction, achieving full confidentiality, integrity, and availability impact on the compromised host. No public exploit code has been identified at time of analysis, and the vulnerability is not listed in the CISA KEV catalog.
Stack-based buffer overflow in Microsoft Office enables local arbitrary code execution when a user opens a specially crafted document. The CVSS vector (AV:L/AC:L/PR:N/UI:R) confirms exploitation is local and requires user interaction - most likely triggered by opening a maliciously crafted Office file delivered via phishing or other social engineering. No active exploitation has been confirmed (not listed in CISA KEV) and no public exploit code has been identified at time of analysis, though the high-impact triad (C:H/I:H/A:H) and Microsoft Office's ubiquitous deployment footprint make this a notable patching priority.
Type confusion in Microsoft Office Excel's file-processing engine enables remote code execution when a user opens a specially crafted spreadsheet document. The vulnerability carries a CVSS 8.8 High score with full confidentiality, integrity, and availability impact against the Excel process, requiring only user interaction to trigger - the classic phishing-attachment threat model. No public exploit code has been identified and the vulnerability is not listed in the CISA KEV catalog at time of analysis.
Heap-based buffer overflow in Microsoft Office enables arbitrary local code execution when a user opens a specially crafted document. Affected products span seven product lines across Windows and macOS, including Office 2019, Office LTSC 2021/2024, Microsoft 365 Apps for Enterprise, and their Mac counterparts, all prior to the vendor-released patch. No public exploit or CISA KEV listing has been identified at time of analysis, but the breadth of the affected install base and the low-complexity exploitation path make this a high-priority patching item.
Use-after-free memory corruption in Microsoft Office enables an attacker to execute arbitrary code in the context of the victim user, scoring CVSS 7.8 (High). Affected products span Office 2019, LTSC 2021, LTSC 2024, and Microsoft 365 Apps for Enterprise on both Windows and macOS. Exploitation requires a victim to open a specially crafted Office document - a delivery mechanism trivially achieved via phishing - and no public exploit code or CISA KEV listing has been identified at time of analysis, though Microsoft Office's ubiquitous enterprise footprint and adversary interest in document-borne malware elevate this beyond a theoretical risk.
Heap-based buffer overflow in Microsoft Office Word enables local code execution with High confidentiality, integrity, and availability impact when a user opens a specially crafted document. Affects Microsoft Office 2019, Microsoft 365 Apps for Enterprise, Office LTSC 2021 and 2024, Word 2016, and corresponding Mac editions. No public exploit identified at time of analysis and the vulnerability is not listed in CISA KEV, but the broad product footprint and low attack complexity make patch application a near-term priority for enterprise defenders.
Local code execution via heap-based buffer overflow in Microsoft Office affects multiple product lines including Office 2019, 2021, 2024 LTSC, and Microsoft 365 Apps for Enterprise. An integer overflow or wraparound during document parsing leads to an undersized heap allocation (CWE-122), enabling arbitrary code execution at the privilege level of the opening user when a victim opens a maliciously crafted Office file. No public exploit code has been identified at time of analysis, and no CISA KEV listing is present, though the full-triad high-impact CVSS score of 7.8 reflects the severity of successful exploitation.
Local code execution via untrusted pointer dereference in Microsoft Office affects multiple product lines - Microsoft 365 Apps for Enterprise, Office 2019, Office LTSC 2021/2024, and Mac editions - when a victim opens a specially crafted document. The root cause (CWE-822) enables memory corruption through unvalidated pointer values sourced from attacker-controlled file content, yielding full confidentiality, integrity, and availability compromise of the targeted user session. No public exploit or active exploitation has been identified at time of analysis; a vendor-released patch is available through Microsoft Update channels.
Heap-based buffer overflow in Microsoft Office, rooted in an integer underflow during document parsing, enables local code execution with high confidentiality, integrity, and availability impact when a user opens a specially crafted file. All major Office release channels on both Windows and Mac are affected, including Microsoft 365 Apps for Enterprise, Office LTSC 2024/2021/2019/2016, and their Mac equivalents. No public exploit has been identified at time of analysis, but a vendor-released patch is available via the Microsoft Security Response Center.
Stack-based buffer overflow in Microsoft Office Word enables local arbitrary code execution when a user opens a maliciously crafted document. Affected products span Word 2016 through Microsoft 365 Apps for Enterprise and LTSC 2021/2024 on both Windows and macOS. No public exploit identified at time of analysis, but Microsoft has released patches across all affected product lines via the August 2026 security update cycle.
Code execution via buffer over-read in Microsoft Office Word affects multiple Windows and Mac Office product lines when a user opens a specially crafted document. The CVSS vector (AV:L/AC:L/PR:N/UI:R) confirms this is a local exploitation scenario requiring user interaction - consistent with a malicious document delivery attack - yielding full confidentiality, integrity, and availability impact on the affected system. No special privileges are required from the attacker. No public exploit code or CISA KEV listing was identified in the provided intelligence at time of analysis.
Type confusion (CWE-843) in Microsoft Office enables local code execution across multiple Office product lines when a user opens a crafted file. Affected versions span Microsoft Office 2019, LTSC 2021, LTSC 2024, and Microsoft 365 Apps for Enterprise on both Windows and macOS. With high confidentiality, integrity, and availability impact and user-interaction-only as the sole prerequisite, the vulnerability presents meaningful risk in phishing and malicious-document delivery scenarios. No public exploit identified at time of analysis, though a vendor patch is available.
Local code execution in Microsoft Office stems from an integer overflow that cascades into a heap-based buffer overflow (CWE-122), affecting Office 2016 through LTSC 2024 on both Windows and macOS. An unauthenticated attacker who can convince a target user to open a crafted Office document gains full code execution with the victim's privilege level - achieving high confidentiality, integrity, and availability impact per the CVSS:3.1 AV:L/C:H/I:H/A:H rating. No public exploit code or CISA KEV listing was identified at time of analysis, but the patch is vendor-confirmed and available via Microsoft's Security Update Guide.
Local code execution in Microsoft Office affects all major editions across Windows and macOS, including Microsoft 365 Apps for Enterprise, Office LTSC 2021/2024, Office 2019, and their Mac counterparts. The vulnerability is a heap-based buffer overflow (CWE-122) triggered when a user opens a specially crafted document, granting the attacker arbitrary code execution at the victim's privilege level. No public exploit has been identified at time of analysis, and a vendor-released patch is available, making this a high-priority patching target across enterprise Office deployments.
Heap-based buffer overflow in Microsoft Office allows local code execution across a wide range of Office versions on both Windows and macOS when a victim opens a specially crafted document. The CVSS vector (AV:L/AC:L/PR:N/UI:R) confirms that no privileges are required - only that a user interacts with malicious content - making this practically reachable via phishing or drive-by document delivery despite the local attack vector. No active exploitation has been confirmed in CISA KEV, and no public exploit code has been identified at time of analysis; a vendor-released patch is available.
Local code execution in Microsoft Office results from an integer overflow that leads to a heap-based buffer overflow (CWE-122), enabling an attacker to run arbitrary code at the privilege level of the logged-in user. Affected products span multiple Windows and Mac release tracks including Office 2016, 2019, LTSC 2021, LTSC 2024, and Microsoft 365 Apps for Enterprise. No public exploit or CISA KEV listing is present in the available data; however, the complete high CIA triad and wide deployment footprint make this a priority patching target.
Stack-based buffer overflow in Microsoft Office Word enables arbitrary code execution when a victim opens a specially crafted document, affecting Word 2016 through Microsoft 365 Apps and Office LTSC 2024 on both Windows and macOS. The flaw (CWE-121) scores CVSS 7.8 with high impacts across confidentiality, integrity, and availability, constrained by local attack vector and mandatory user interaction. No public exploit has been identified at time of analysis; a vendor patch is available via the Microsoft Security Response Center.
Stack-based buffer overflow in Microsoft Office (CWE-121) enables local code execution across a broad range of affected builds including Office 2016, 2019, LTSC 2021, LTSC 2024, Office 365 for Mac, LTSC for Mac 2021/2024, and Microsoft 365 Apps for Enterprise. Exploitation requires user interaction - consistent with a maliciously crafted document delivery model - and achieves full confidentiality, integrity, and availability compromise within the Office process context. No public exploit code or CISA KEV listing has been identified at time of analysis; a vendor-released patch is available via the MSRC advisory.
Local code execution in Microsoft Office is possible when a user opens a specially crafted document that triggers a heap-based buffer overflow (CWE-122), granting the attacker full control over the victim's user session. The vulnerability spans the entire modern Office portfolio - Microsoft 365 Apps for Enterprise, Office 2019, LTSC 2021, LTSC 2024, and macOS equivalents - making the attack surface exceptionally broad. No public exploit identified at time of analysis and the vulnerability is not listed in the CISA KEV catalog; Microsoft has released patches for all affected product lines.
Heap-based buffer overflow in Microsoft Office Word enables arbitrary local code execution when a user opens a specially crafted document. The vulnerability spans a broad set of affected products across both Windows and macOS platforms, including Office LTSC 2021/2024, Office 2019, Microsoft 365 Apps for Enterprise, Office 365 for Mac, and Outlook 2016. No public exploit code has been identified at time of analysis, though Microsoft has released a patch and the document-based delivery model is a proven and widely abused attack vector in enterprise phishing campaigns.
Out-of-bounds read (CWE-125) in Microsoft Office enables local code execution across a broad range of Office product editions on both Windows and macOS. The CVSS vector (AV:L/AC:L/PR:N/UI:R) confirms the attack requires no privileges but does require a victim to open a crafted file, consistent with a malicious document delivery scenario. A patch has been released by Microsoft; no public exploit code or CISA KEV listing has been identified at the time of analysis, though the full CIA impact (C:H/I:H/A:H) and breadth of affected products make this a high-priority patching target for enterprise environments.
Heap-based buffer overflow in Microsoft Office enables local code execution with high impact across confidentiality, integrity, and availability. Affecting Office 2016 through 2024, including LTSC and Microsoft 365 variants on both Windows and macOS, the vulnerability is triggered when a user opens a specially crafted document - requiring no privileges but mandatory user interaction (CVSS AV:L/UI:R). Patch is available from Microsoft; no public exploit identified at time of analysis.
Heap-based buffer overflow in Microsoft Office Excel allows a local attacker to execute arbitrary code with the privileges of the victim user by convincing them to open a specially crafted Excel file. The vulnerability spans a wide range of currently supported Office releases - Excel 2016 through Microsoft 365 Apps for Enterprise, plus Office for Mac editions - making the attack surface broad. No public exploit or CISA KEV listing has been identified at time of analysis, but Microsoft has issued patches across all affected channels.
Heap-based buffer overflow in Microsoft Office Excel enables local code execution when a victim opens a specially crafted Excel file. Affected products span Excel 2016 through Microsoft 365 Apps for Enterprise and LTSC 2024 editions, including Mac variants. No public exploit code or CISA KEV listing has been identified at time of analysis, and Microsoft has released patches across all affected product lines.
Out-of-bounds read in Microsoft Excel's file-parsing engine allows code execution when a victim opens a specially crafted workbook. Affected builds span Excel 2016 through Office LTSC 2024 and their Mac equivalents, making the exposure broad across both perpetual-license and subscription deployments. No public exploit code has been identified at time of analysis, but Microsoft has released patched builds for all affected product lines.
Out-of-bounds read (CWE-125) in Microsoft Office Excel's file-parsing engine enables local code execution when a victim opens a specially crafted spreadsheet. Affects a wide range of Microsoft Office products from version 2016 through LTSC 2024 and Microsoft 365 Apps for Enterprise, on both Windows and Mac platforms. No public exploit identified at time of analysis, but the low attack complexity combined with full confidentiality, integrity, and availability impact makes phishing-delivered document lures a realistic and proven delivery vector.
Use-after-free code execution in Microsoft Excel allows a local unauthenticated attacker to execute arbitrary code at the privilege level of the victim user by enticing them to open a specially crafted workbook file. Affected products span the full current Office portfolio: Excel 2016, Office 2016/2019, Office LTSC 2021/2024 (Windows and Mac), and Microsoft 365 Apps for Enterprise. No public exploit or CISA KEV listing is identified at time of analysis, but Microsoft has released patches addressing all affected version lines.
Stack-based buffer overflow in Microsoft Office Excel enables arbitrary code execution when a user opens a specially crafted workbook. The vulnerability (CWE-121) spans a wide range of Office suites from 2016 through 2024 LTSC on both Windows and macOS. No public exploit code or active exploitation (CISA KEV) has been identified at time of analysis, but the broad affected surface - including Microsoft 365 Apps for Enterprise - makes patching a priority for enterprise environments.
Remote code execution in Microsoft Office Word arises from a heap-based buffer overflow (CWE-122) triggered when a user opens a specially crafted document. The flaw affects a broad swath of Office product lines - Microsoft 365 Apps for Enterprise, Office 2016/2019/LTSC 2021/LTSC 2024 on Windows, and Office for Mac variants - with vendor patches available at specific build thresholds. No public exploit code or CISA KEV listing exists at time of analysis, placing this in the category of patched-but-unconfirmed-exploited, though the enormous deployment footprint and phishing-friendly delivery model elevate real-world priority.
Heap-based buffer overflow in Microsoft Excel enables local code execution with full user-level privileges when a victim opens a specially crafted workbook file. Affected products span the entire current Office portfolio - Excel 2016 through Office LTSC 2024 and Microsoft 365 Apps for Enterprise - on both Windows and macOS. No public exploit code has been identified and this vulnerability is not listed in the CISA KEV catalog at time of analysis, but the broad install base and file-delivery attack path make it a meaningful phishing vector.
Double-free memory corruption (CWE-415) in Microsoft Excel enables local arbitrary code execution across a wide range of Office product lines including Excel 2016, Office 2019, LTSC 2021/2024, and Microsoft 365 Apps for Enterprise. An attacker who delivers a specially crafted Excel workbook and convinces a target user to open it can achieve arbitrary code execution in the user's security context, with high confidentiality, integrity, and availability impact. Vendor-released patches are available for all Windows Office variants; no public exploit and no CISA KEV listing have been identified at the time of analysis.
Integer overflow in Microsoft Excel's file parsing engine allows an unauthenticated attacker who delivers a specially crafted Excel workbook to execute arbitrary code with the privileges of the victim user upon file opening. The vulnerability spans Excel 2016 through Microsoft 365 Apps for Enterprise and LTSC variants on both Windows and macOS. No public exploit code has been identified at time of analysis, and Microsoft has issued patches across all affected product lines.
Heap-based buffer overflow (CWE-122) in Microsoft Office Excel allows a local, unauthenticated attacker to execute arbitrary code with the privileges of the victim user by convincing them to open a specially crafted Excel file. The vulnerability affects a broad range of Office releases spanning Excel 2016 through Office LTSC 2024, on both Windows and macOS. Microsoft has released patches addressing this flaw; no public exploit code or CISA KEV listing has been identified at time of analysis.
Heap-based buffer overflow in Microsoft Office Excel enables local code execution when a victim opens a specially crafted Excel file. Affected products span nearly every current Office release line - Excel 2016, Office 2019, Office LTSC 2021 and 2024 (Windows and Mac), Microsoft 365 Apps for Enterprise, Office 365 for Mac, and Office Online Server. An attacker who tricks a user into opening a malicious workbook can achieve full code execution at the victim's privilege level, with high confidentiality, integrity, and availability impact. No public exploit code has been identified at time of analysis, and no CISA KEV listing exists.
Heap-based buffer overflow in Microsoft Office Excel enables local code execution across nine distinct Office SKUs ranging from Excel 2016 through Microsoft 365 Apps for Enterprise. Exploitation requires a victim to open a specially crafted Excel file, making phishing and malicious-document delivery the primary attack vectors. Microsoft has released patched builds for all affected Windows variants; Mac-platform fixed builds should be confirmed via the MSRC advisory. No public exploit or CISA KEV listing has been identified at time of analysis.
Heap-based buffer overflow in Microsoft Office Excel enables local code execution when a user opens a specially crafted workbook. The vulnerability (CWE-122) affects all major Office perpetual and subscription editions across Windows and Mac, spanning Excel 2016 through Microsoft 365 Apps for Enterprise. No public exploit code has been identified at time of analysis, but the file-open trigger and full C/I/A impact make this a high-priority patch for organizations relying on email-delivered spreadsheets.
Stack-based buffer overflow in Microsoft Office Excel enables arbitrary code execution at the current user's privilege level when a victim opens a specially crafted workbook file. The vulnerability spans Excel 2016 through Microsoft 365 Apps for Enterprise and LTSC 2024 across both Windows and Mac platforms, making the potential victim population extremely large. Microsoft has released patches via MSRC; no public exploit code or CISA KEV listing has been identified at time of analysis.
Heap-based buffer overflow in Microsoft Office Excel enables local code execution when a victim opens a specially crafted Excel file. Affected products span the full Office portfolio - Excel 2016, Office 2019, 2021, 2024 LTSC editions, and Microsoft 365 Apps for Enterprise on both Windows and Mac. An attacker who can convince a user to open a malicious workbook can achieve full C:H/I:H/A:H compromise of the victim's session. No public exploit or CISA KEV listing has been identified at time of analysis, and Microsoft has released patched builds.
Stack-based buffer overflow in Microsoft Office Excel enables local code execution when a user opens a specially crafted workbook, affecting all major Office product lines from Excel 2016 through Office LTSC 2024 and Microsoft 365 Apps for Enterprise on both Windows and Mac platforms. The vulnerability carries a CVSS 7.8 score reflecting high CIA impact against the Office process, with mandatory user interaction (opening the malicious file) as the sole prerequisite. Microsoft has released patches for all supported versions; no public exploit code or CISA KEV listing has been identified at time of analysis.
Heap-based buffer overflow in Microsoft Office Excel enables local code execution across all major Office release tracks when a victim opens a maliciously crafted spreadsheet file. The vulnerability is rooted in improper heap memory management during Excel's file parsing routines (CWE-122), resulting in full compromise of confidentiality, integrity, and availability on the victim system. No public exploit code has been identified at time of analysis, but the breadth of affected versions - spanning Office 2016 through Microsoft 365 and Mac variants - makes this a high-priority patch target for enterprise environments.
Heap-based buffer overflow in Microsoft Office Word enables unauthenticated remote attackers to achieve arbitrary code execution at the privilege level of the target user. The vulnerability (CWE-122) is triggered when a victim opens a specially crafted Word document, covering Word 2016, Office 2019, Office LTSC 2021/2024, and Microsoft 365 Apps for Enterprise across both Windows and Mac platforms. Microsoft has released patches; no public exploit code or CISA KEV listing has been identified at time of analysis, though the broad product coverage and high CVSS of 8.8 make this a priority patching target.
Remote code execution in Microsoft Office Word via a double-free memory corruption flaw (CWE-415) allows a network-accessible, unauthenticated attacker to achieve full system compromise with high confidentiality, integrity, and availability impact. The vulnerability spans seven distinct product/version combinations - Word 2016, Office 2019, LTSC 2021, LTSC 2024, Microsoft 365 Apps for Enterprise on Windows, and multiple Mac editions - making the affected surface unusually broad. No public exploit code or CISA KEV listing has been identified at time of analysis, though the low attack complexity and wide deployment footprint make rapid patching a clear priority.
Remote code execution in Microsoft Office Word via a heap-based buffer overflow (CWE-122) allows an unauthenticated network attacker to fully compromise a victim system upon opening a crafted document. All major Office licensing tracks are affected on both Windows and macOS, spanning Office 2016 through Microsoft 365 Apps for Enterprise. No CISA KEV listing or public exploit code is referenced in available data, but the low-complexity, no-privileges-required vector with full confidentiality, integrity, and availability impact makes this a critical priority for enterprise patch cycles.
Remote code execution via use-after-free (CWE-416) in Microsoft Office Outlook allows a network-based attacker to execute arbitrary code on a victim's system when the user opens or previews malicious content. The vulnerability affects a broad range of Microsoft Office versions across Windows and macOS, including Microsoft 365 Apps for Enterprise, Office LTSC 2021/2024, Office 2019, and Word 2016. No public exploit identified at time of analysis, but a vendor patch is available; the CVSS score of 8.8 (AV:N/AC:L/PR:N/UI:R) reflects the high severity, tempered only by the requirement for user interaction.
Out-of-bounds write (CWE-787) in multiple Microsoft Office versions enables remote code execution when a victim opens a specially crafted Office document. The vulnerability affects a broad matrix of products spanning Microsoft 365 Apps for Enterprise, Office LTSC 2021/2024, Office 2016/2019, and their Mac counterparts, covering virtually the entire modern Office product line. Vendor patches have been released via MSRC; no public exploit or CISA KEV listing has been identified at time of analysis, but the network-deliverable, low-complexity nature and full C/I/A impact make this a high-priority patching target.
Heap-based buffer overflow in Microsoft Office Word's document parsing engine enables remote unauthenticated attackers to execute arbitrary code on target systems when a user opens a specially crafted document. The vulnerability affects a wide range of Microsoft Office releases - Word 2016, Office 2019, LTSC 2021, LTSC 2024, Office 365 for Mac, and Microsoft 365 Apps for Enterprise - making the attack surface extremely broad. Microsoft has released patches across all affected product lines; no public exploit or CISA KEV listing has been identified at time of analysis, though UI:R interaction remains the sole barrier to exploitation.
Out-of-bounds read in Microsoft Office Excel enables remote code execution when a victim opens a crafted Excel workbook, achieving full C/I/A compromise on the target system. The vulnerability spans every major Office product line from Excel 2016 through Microsoft 365 Apps for Enterprise on both Windows and macOS. Vendor-released patches are available for all Windows product lines with specific fixed builds enumerated; no public exploit code or CISA KEV listing has been identified at time of analysis.
Heap-based buffer overflow in Microsoft Office Word enables remote unauthenticated code execution when a victim opens a specially crafted document. Affects the full breadth of Office deployments - Microsoft 365 Apps for Enterprise, Office 2019, Office LTSC 2021/2024, Word 2016, and their Mac equivalents - making the attack surface extremely wide. No public exploit identified at time of analysis, but the CVSS 8.8 vector (AV:N/AC:L/PR:N/UI:R) with full C/I/A impact places this firmly in priority patching territory for enterprise environments.
Use-after-free in Microsoft Word enables remote code execution when a victim opens or interacts with a specially crafted document. The CVSS vector (AV:N/AC:L/PR:N/UI:R) reflects delivery over the network with no authentication required and only a single user interaction - opening a malicious file - as the prerequisite. Full confidentiality, integrity, and availability compromise is achievable on the affected endpoint, spanning Microsoft Word 2016, Office 2019, Office LTSC 2021/2024, Microsoft 365 Apps for Enterprise, and their Mac counterparts. No public exploit or CISA KEV listing has been identified at time of analysis; vendor patch is available.
Heap-based buffer overflow in Microsoft Word's document-parsing engine, arising from a numeric truncation error, enables remote code execution when a user opens a specially crafted Word document. The flaw spans a wide matrix of Office SKUs on both Windows and Mac - including Office 2016, 2019, LTSC 2021/2024, Microsoft 365 Apps for Enterprise, and Mac variants - and carries CVSS 8.8 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H), reflecting full compromise with the only friction being the required user interaction. No public exploit code or CISA KEV listing has been identified at time of analysis, but the ubiquity of the Office install base makes this a high-priority patching target.
Remote code execution in Microsoft Office Word exposes virtually every Windows and macOS Office release channel - Word 2016, Office 2019, LTSC 2021/2024, 365 Apps for Enterprise, and Office for Mac - to full system compromise via a specially crafted document. The heap-based buffer overflow (CWE-122) fires during document parsing with no authentication required from the attacker, only standard user interaction to open the malicious file, yielding C:H/I:H/A:H impact under a low-complexity attack path. Microsoft has issued patches across all Windows release branches and flags macOS editions as affected; no public exploit or CISA KEV listing has been identified at time of analysis.
Heap-based buffer overflow in Microsoft Word (Microsoft 365 Apps for Enterprise, Office 2016, Office 2019, Office LTSC 2021, Office LTSC 2024, and the corresponding macOS Office builds) enables arbitrary code execution in the security context of the user who opens an attacker-crafted Word document. The attack is client-side: a victim must open or preview a malicious file delivered by email, web download, or a shared location, and no authentication or elevated privileges on the target are required (PR:N), though our assessment sets the interaction requirement at UI:R despite the UI:N flag in the published vector. No public exploit code has been identified at time of analysis and EPSS is low (0.95%, 59th percentile), but CISA SSVC rates the technical impact as total with automatable exploitation and vendor patches are available, making this a genuinely notable issue rather than an emergency.
Remote code execution in Microsoft Office Outlook stems from a heap-based buffer overflow (CWE-122) that lets an unauthenticated network attacker run arbitrary code, per Microsoft's MSRC advisory and CVSS 9.8 (AV:N/AC:L/PR:N/UI:N). The flaw affects Office 2019, Office LTSC 2021/2024, Microsoft 365 Apps for Enterprise, Word 2016, and Office for Mac builds; Microsoft has released fixed builds. No public exploit identified at time of analysis, but the critical severity and no-interaction network vector make it a high patch priority.
Remote code execution in Microsoft Office Word via a use-after-free (CWE-416) memory corruption flaw allows an unauthenticated network attacker to compromise a target system when the victim opens a specially crafted document. All major release tracks are affected - Office 2019, LTSC 2021, LTSC 2024, and Microsoft 365 Apps for Enterprise on both Windows and macOS - with fixed builds published by Microsoft. No CISA KEV listing or public exploit has been identified at time of analysis, but the CVSS 8.8 PR:N/UI:R profile is characteristic of document-delivery RCE bugs historically prioritized by both criminal and nation-state actors for initial access.
Heap-based buffer overflow in Microsoft Office allows unauthenticated remote attackers to execute arbitrary code on a victim's system when the victim opens a specially crafted Office document. Multiple product lines are affected, including Microsoft 365 Apps for Enterprise, Office LTSC 2021/2024, Office 2016/2019, and Mac variants of each. With a CVSS score of 8.8 and full confidentiality, integrity, and availability impact, this is a high-severity code execution path; no public exploit code or CISA KEV listing has been identified at time of analysis, and a vendor-released patch is available.
Stack-based buffer overflow (CWE-121) in Microsoft Office Word enables a remote unauthenticated attacker to execute arbitrary code on a victim's machine by delivering a specially crafted Word document and inducing the target to open it. The vulnerability spans a wide swath of Office product lines - from Word 2016 through Office LTSC 2024 and Microsoft 365 Apps for Enterprise - on both Windows and macOS platforms. Microsoft has released patches across Windows product lines; no public exploit has been identified at time of analysis and the vulnerability is not listed in the CISA KEV catalog.
Remote code execution in Microsoft Office Word allows an unauthenticated network attacker to execute arbitrary code on a victim's machine by delivering a specially crafted document that triggers a null pointer dereference. Affected versions span Microsoft Word 2016, Office 2019, Office LTSC 2021, Office LTSC 2024, Microsoft 365 Apps for Enterprise, and Office LTSC for Mac variants. Microsoft has released patches across all affected product lines; no public exploit or CISA KEV listing has been identified at time of analysis.
Heap-based buffer overflow (CWE-122) in multiple Microsoft Office versions enables remote code execution when a victim opens a specially crafted document. The CVSS vector (AV:N/AC:H/PR:N/UI:R) confirms network-based delivery without attacker authentication, but exploitation requires high attack complexity and active user interaction - consistent with a maliciously crafted Office file that triggers a memory corruption condition in Office's document parsing subsystem. Affected builds span Office 2019, LTSC 2021, LTSC 2024, Microsoft 365 Apps for Enterprise, and Mac-platform variants; patched build numbers are available for Windows-based SKUs per EUVD-2026-73290, while Mac SKU fix versions are not specified in available data.
Heap-based buffer overflow in Microsoft Office Word enables remote unauthenticated attackers to achieve full code execution (C:H/I:H/A:H) by delivering a specially crafted Word document to a target user across all major Office suite versions on both Windows and macOS. Affected products span Microsoft 365 Apps for Enterprise, Office 2019, Office LTSC 2021, Office LTSC 2024, and Word 2016, with fixed version thresholds confirmed by EUVD. No public exploit or CISA KEV listing identified at time of analysis, but the network-vector, no-auth delivery model is highly attractive for phishing-based initial access campaigns. Vendor-released patch is available via Microsoft Security Response Center.
Heap-based buffer overflow in Microsoft Office Word's document-parsing engine enables remote code execution when a victim opens a specially crafted file, yielding full confidentiality, integrity, and availability compromise of the user's session. Affected products span Microsoft 365 Apps for Enterprise, Office 2019, Office LTSC 2021, Office LTSC 2024, Word 2016, and corresponding macOS editions across both x86 and x64 architectures. No public exploit identified at time of analysis, but the AV:N/PR:N/UI:R CVSS pattern is historically associated with rapid phishing-campaign weaponization for Office document vulnerabilities.
Remote code execution via use-after-free in Microsoft Office PowerPoint enables a network-positioned, unauthenticated attacker to execute arbitrary code on a victim's system when the victim opens a crafted PowerPoint file. The flaw spans the entire current Office product family including Microsoft 365 Apps for Enterprise, Office LTSC 2021/2024, PowerPoint 2016, Office 2019, and their Mac counterparts. No public exploit code or active CISA KEV listing has been identified at time of analysis, but the broad product coverage and lack of privilege requirements make this a high-priority patch target.
Use-after-free in Microsoft Office PowerPoint enables remote code execution when a victim opens a specially crafted PowerPoint document. The vulnerability affects PowerPoint 2016, 2019, Office LTSC 2021, LTSC 2024, Microsoft 365 Apps for Enterprise, and Office for Mac across multiple build versions, spanning virtually the entire active Office install base. Vendor patches have been released; no public exploit or CISA KEV listing has been identified at time of analysis.
Stack-based buffer overflow in Microsoft Office Word's document parsing engine allows remote unauthenticated attackers to execute arbitrary code with the privileges of the victim user when a specially crafted Word document is opened. The flaw (CWE-121) spans Microsoft 365 Apps for Enterprise, Office 2019, Office LTSC 2021, Office LTSC 2024, and Word 2016 on both Windows and macOS. Microsoft has released patched builds; no public exploit code and no CISA KEV listing have been identified at time of analysis.
Stack-based buffer overflow in Microsoft Word (CWE-121) enables remote code execution by enticing a user to open a maliciously crafted document, with full compromise of confidentiality, integrity, and availability. Affected products span Office 2019, 2021, and 2024 LTSC on both Windows (x86/x64) and macOS, as well as Microsoft 365 Apps for Enterprise and Word 2016. Microsoft has released patches across all affected product lines; no public exploit code has been identified and CISA KEV confirmation is absent at time of analysis.
Stack-based buffer overflow in Microsoft Word's document-parsing engine enables network-delivered remote code execution with full system impact across all current Microsoft Office product lines on Windows and macOS. The vulnerability (CWE-121) is triggered when a user opens a specially crafted Word document, overflowing a fixed-size stack buffer and allowing an attacker to hijack control flow and execute arbitrary code in the context of the logged-in user. Affected versions span Word 2016 through Microsoft 365 Apps for Enterprise and LTSC editions on both x86/x64 Windows and macOS; patches are available per vendor advisory, and no public exploit code has been identified at time of analysis.
Remote code execution in Microsoft Office PowerPoint stems from a use-after-free memory corruption flaw (CWE-416) that enables network-based attackers to execute arbitrary code when a victim opens a crafted presentation file. All major Office editions are affected - Microsoft 365 Apps for Enterprise, Office LTSC 2021 and 2024, Office 2019, PowerPoint 2016, and multiple macOS variants - spanning a broad enterprise and consumer installed base. No public exploit or CISA KEV listing has been identified at time of analysis; Microsoft has released patches across all affected Windows product lines.
Heap-based buffer overflow in Microsoft Office Word's document parsing engine enables an unauthenticated remote attacker to achieve full code execution on a victim's system when a specially crafted Word document is opened. The flaw spans all major currently-supported Office release channels on both Windows and macOS, including Microsoft 365 Apps for Enterprise, Office 2019/2021/2024 LTSC, Word 2016, and macOS editions. No public exploit or CISA KEV listing has been identified at time of analysis, but the low attack complexity, broad product footprint, and well-understood Office document exploitation tradecraft make this a high-priority patching candidate.
Remote code execution in Microsoft Office via a use-after-free (CWE-416) memory corruption flaw allows a network-adjacent or remote attacker to execute arbitrary code on the victim's machine. The attack is client-side: the attacker delivers a maliciously crafted Office document, which when opened by the user triggers the UAF condition. Affected products span the full Office family including LTSC 2021, LTSC 2024, Office 2019, Microsoft 365 Apps for Enterprise, and Mac variants; a vendor patch is available.
Heap-based buffer overflow (CWE-122) in Microsoft Office Word enables unauthenticated remote code execution when a victim opens a specially crafted document. All currently supported Office product lines are affected across Windows (x86/x64) and macOS, including Microsoft 365 Apps for Enterprise, Office 2016, 2019, 2021 LTSC, 2024 LTSC, and Microsoft 365 for Mac. No public exploit code or CISA KEV listing has been identified at time of analysis, but the breadth of affected products and full C/I/A impact make this a high-priority patching item across virtually all enterprise environments.
External file path control in Microsoft Office Word enables local code execution with full confidentiality, integrity, and availability impact when a target user opens a specially crafted document. All major Office release tracks are affected across Windows and macOS - Office 2016, 2019, 2021 LTSC, LTSC 2024, and Microsoft 365 Apps for Enterprise. No public exploit has been identified at time of analysis, and vendor patches are available through the Office security release channel.
PowerPoint's improper input validation (CWE-20) exposes local users to high-impact compromise when a maliciously crafted presentation file is opened, with the official CVSS vector asserting high confidentiality, integrity, and availability impact - a notable divergence from the description's characterization as information disclosure only. The attack requires no attacker privileges but mandates user interaction, fitting a phishing-and-open-file threat model. No public exploit code exists and this vulnerability is not listed in the CISA KEV catalog at time of analysis.
Use-after-free memory corruption in Microsoft Office Word enables local code execution when a user opens a specially crafted document. The CVSS vector (AV:L/AC:L/PR:N/UI:R) confirms this is a social-engineering-dependent attack - no system privileges are required, but the victim must open a malicious file, making phishing or drive-by document delivery the likely delivery mechanism. All three impact dimensions (Confidentiality, Integrity, Availability) are rated High, yielding a 7.8 CVSS score; no public exploit or CISA KEV listing has been identified at time of analysis.
Stack-based buffer overflow in Microsoft Office Excel enables local arbitrary code execution when a user opens a specially crafted file. The vulnerability (CWE-121) carries a CVSS 7.8 High score, with high confidentiality, integrity, and availability impact upon successful exploitation. No active exploitation has been confirmed (not listed in CISA KEV), and no public exploit code is identified at time of analysis.
Stack-based buffer overflow in Microsoft Office Excel enables local code execution when a user opens a crafted file. The vulnerability (CWE-121) is triggered through user interaction with malicious content, requiring no privileges on the target system beyond access to run Excel. No public exploit code or CISA KEV listing is identified at time of analysis, though the high-impact CVSS 7.8 score reflects full compromise of confidentiality, integrity, and availability upon successful exploitation.
Heap-based buffer overflow in Microsoft Office Excel enables local code execution with full system-level impact when a victim opens a specially crafted Excel file. The flaw (CWE-122) resides in Excel's file parsing logic, where malformed input causes a heap memory region to be overwritten, redirecting execution flow. No public exploit has been identified at time of analysis, and the vulnerability has not appeared in CISA's Known Exploited Vulnerabilities catalog, though the Microsoft Security Response Center has issued an advisory.
Out-of-bounds read in Microsoft Office Excel enables local code execution when a user opens a specially crafted spreadsheet file. The vulnerability (CWE-125) carries a CVSS 7.8 score with high impact across confidentiality, integrity, and availability, and is reported directly by Microsoft via the MSRC update guide. No public exploit code or CISA KEV listing has been identified at time of analysis, but the low attack complexity (AC:L) indicates reliable exploitability once a working exploit is developed.
Heap-based buffer overflow in Microsoft Office Excel enables local code execution when a user opens a specially crafted Excel file. The vulnerability triggers during file parsing, allowing an attacker who can deliver a malicious document to execute arbitrary code with the privileges of the logged-in user. No KEV listing or public exploit code has been identified at time of analysis, but the local-execution-via-document vector makes this a meaningful phishing and spear-phishing enabler.
Type confusion (CWE-843) in Microsoft Office Excel enables local code execution when a victim opens a specially crafted file. The CVSS vector (AV:L/AC:L/PR:N/UI:R) confirms the attack is file-based: no attacker privileges are required, but the target user must open a malicious document, making this a high-impact phishing-delivery vector. No public exploit code and no CISA KEV listing are identified at time of analysis, but the full confidentiality, integrity, and availability impact (C:H/I:H/A:H) makes this a critical priority for organizations where Excel is deployed.
Untrusted pointer dereference in Microsoft Office Excel enables local arbitrary code execution when a user opens a crafted document. The flaw (CWE-822) allows an attacker who can deliver a malicious file to achieve full code execution with high confidentiality, integrity, and availability impact on the victim's system. No public exploit has been identified at time of analysis, and Microsoft has not listed this in CISA's Known Exploited Vulnerabilities catalog.
Heap-based buffer overflow in Microsoft Office Excel enables local code execution when a user opens a specially crafted file, granting full confidentiality, integrity, and availability compromise of the affected system. The CVSS vector (AV:L/AC:L/PR:N/UI:R) confirms this is a document-triggered exploit requiring no attacker privileges but demanding victim interaction - a profile consistent with malicious email attachment or drive-by download campaigns. No public exploit code or CISA KEV listing has been identified at time of analysis, though Excel's ubiquity makes this a high-value target class.
Out-of-bounds write (CWE-787) in Microsoft Office Excel enables local code execution when a user opens a specially crafted Excel file, yielding full confidentiality, integrity, and availability impact at CVSS 7.8. The attack is file-delivery based - typical phishing or drive-by download - requiring no system privileges from the attacker but requiring the victim to open the malicious document. No public exploit code or CISA KEV listing has been identified at time of analysis.
Heap-based buffer overflow in Microsoft Office Excel enables local code execution when a user opens a specially crafted Excel file. The CVSS vector (AV:L/PR:N/UI:R) confirms the attack requires no system privileges but does require user interaction - the classic malicious-document delivery pattern. Full confidentiality, integrity, and availability compromise results, making this a high-severity threat against any organization reliant on Excel for document workflows. No public exploit or CISA KEV listing has been identified at time of analysis.
Heap-based buffer overflow in Microsoft Office Excel enables local code execution with full system impact when a victim opens a maliciously crafted workbook. The root cause is a numeric truncation error (CWE-122) in Excel's file parsing logic, where an integer value is truncated before being used to size a heap allocation, resulting in an undersized buffer that can be overflowed. No public exploit code has been identified at time of analysis, and there is no CISA KEV listing, but the high CVSS score of 7.8 and full confidentiality, integrity, and availability impact make this a meaningful risk for organizations relying on Excel file workflows.
Type confusion (CWE-843) in Microsoft Office Excel enables local code execution by an unauthenticated attacker when a victim opens a specially crafted Excel document. The CVSS:3.1 vector (AV:L/AC:L/PR:N/UI:R) confirms this is a file-borne attack requiring user interaction but no attacker privileges, with full High/High/High C/I/A impact. No public exploit code or CISA KEV listing has been identified at time of analysis, though the memory corruption tag suggests the type confusion leads to exploitable heap or stack corruption.
Heap-based buffer overflow in Microsoft Office Excel enables local code execution when a victim opens a specially crafted workbook, resulting in full compromise of confidentiality, integrity, and availability on the local system. The CVSS 3.1 vector (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) confirms no attacker privileges are required, though user interaction - opening the malicious file - is a hard prerequisite. No public exploit code or CISA KEV listing has been identified at time of analysis; the issue is confirmed by Microsoft's Security Response Center via secure@microsoft.com.
Heap-based buffer overflow in Microsoft Office Excel enables local code execution when a victim opens a specially crafted Excel file. The attack requires no privileges from the attacker but does require user interaction - consistent with a malicious document delivery vector - and carries high impact across confidentiality, integrity, and availability. No active exploitation (KEV) or public exploit code has been identified in the provided intelligence at time of analysis.
Heap-based buffer overflow in Microsoft Office Excel enables local code execution when a victim opens a specially crafted file. The CVSS vector (AV:L/PR:N/UI:R) confirms exploitation requires no prior privileges but depends on user interaction - consistent with a malicious document delivery scenario. No public exploit code or CISA KEV listing has been identified at time of analysis, though the full confidentiality, integrity, and availability impact (C:H/I:H/A:H) makes this a high-severity concern for any environment running unpatched Excel installations.
Heap-based buffer overflow in Microsoft Office Excel enables local code execution when a user opens a specially crafted Excel file. An unauthenticated attacker (per CVSS PR:N) delivers a malicious document that triggers the overflow upon interaction (UI:R), achieving full confidentiality, integrity, and availability compromise on the victim system. No public exploit or KEV listing has been identified at time of analysis, though the attack pattern is well-understood and document-based Excel exploits have a long operational history.
Stack-based buffer overflow in Microsoft Office Excel enables arbitrary code execution on the victim's local machine when a specially crafted Excel file is opened. The vulnerability carries a CVSS base score of 7.8 with high confidentiality, integrity, and availability impact, affecting the victim's user-level security context. No public exploit has been identified at time of analysis, and the vulnerability is not listed in the CISA KEV catalog, reducing immediacy compared to actively exploited file-format parsing flaws.
Heap-based buffer overflow in Microsoft Office Excel enables local code execution when a victim opens a maliciously crafted file. The vulnerability (CWE-122) corrupts heap memory in Excel's parsing logic, allowing an attacker to achieve full control over confidentiality, integrity, and availability of the affected system. No public exploit or active exploitation has been identified at time of analysis, but the CVSS score of 7.8 with high impact across all three CIA triad pillars makes this a meaningful priority for organizations running affected Excel versions.
Out-of-bounds read in Microsoft Office Excel enables local code execution when a user opens a specially crafted workbook file. The CVSS vector (AV:L/AC:L/PR:N/UI:R) confirms file-based delivery requiring victim interaction, achieving full confidentiality, integrity, and availability impact on the compromised host. No public exploit code has been identified at time of analysis, and the vulnerability is not listed in the CISA KEV catalog.
Stack-based buffer overflow in Microsoft Office enables local arbitrary code execution when a user opens a specially crafted document. The CVSS vector (AV:L/AC:L/PR:N/UI:R) confirms exploitation is local and requires user interaction - most likely triggered by opening a maliciously crafted Office file delivered via phishing or other social engineering. No active exploitation has been confirmed (not listed in CISA KEV) and no public exploit code has been identified at time of analysis, though the high-impact triad (C:H/I:H/A:H) and Microsoft Office's ubiquitous deployment footprint make this a notable patching priority.
Type confusion in Microsoft Office Excel's file-processing engine enables remote code execution when a user opens a specially crafted spreadsheet document. The vulnerability carries a CVSS 8.8 High score with full confidentiality, integrity, and availability impact against the Excel process, requiring only user interaction to trigger - the classic phishing-attachment threat model. No public exploit code has been identified and the vulnerability is not listed in the CISA KEV catalog at time of analysis.
Heap-based buffer overflow in Microsoft Office enables arbitrary local code execution when a user opens a specially crafted document. Affected products span seven product lines across Windows and macOS, including Office 2019, Office LTSC 2021/2024, Microsoft 365 Apps for Enterprise, and their Mac counterparts, all prior to the vendor-released patch. No public exploit or CISA KEV listing has been identified at time of analysis, but the breadth of the affected install base and the low-complexity exploitation path make this a high-priority patching item.
Use-after-free memory corruption in Microsoft Office enables an attacker to execute arbitrary code in the context of the victim user, scoring CVSS 7.8 (High). Affected products span Office 2019, LTSC 2021, LTSC 2024, and Microsoft 365 Apps for Enterprise on both Windows and macOS. Exploitation requires a victim to open a specially crafted Office document - a delivery mechanism trivially achieved via phishing - and no public exploit code or CISA KEV listing has been identified at time of analysis, though Microsoft Office's ubiquitous enterprise footprint and adversary interest in document-borne malware elevate this beyond a theoretical risk.
Heap-based buffer overflow in Microsoft Office Word enables local code execution with High confidentiality, integrity, and availability impact when a user opens a specially crafted document. Affects Microsoft Office 2019, Microsoft 365 Apps for Enterprise, Office LTSC 2021 and 2024, Word 2016, and corresponding Mac editions. No public exploit identified at time of analysis and the vulnerability is not listed in CISA KEV, but the broad product footprint and low attack complexity make patch application a near-term priority for enterprise defenders.
Local code execution via heap-based buffer overflow in Microsoft Office affects multiple product lines including Office 2019, 2021, 2024 LTSC, and Microsoft 365 Apps for Enterprise. An integer overflow or wraparound during document parsing leads to an undersized heap allocation (CWE-122), enabling arbitrary code execution at the privilege level of the opening user when a victim opens a maliciously crafted Office file. No public exploit code has been identified at time of analysis, and no CISA KEV listing is present, though the full-triad high-impact CVSS score of 7.8 reflects the severity of successful exploitation.
Local code execution via untrusted pointer dereference in Microsoft Office affects multiple product lines - Microsoft 365 Apps for Enterprise, Office 2019, Office LTSC 2021/2024, and Mac editions - when a victim opens a specially crafted document. The root cause (CWE-822) enables memory corruption through unvalidated pointer values sourced from attacker-controlled file content, yielding full confidentiality, integrity, and availability compromise of the targeted user session. No public exploit or active exploitation has been identified at time of analysis; a vendor-released patch is available through Microsoft Update channels.
Heap-based buffer overflow in Microsoft Office, rooted in an integer underflow during document parsing, enables local code execution with high confidentiality, integrity, and availability impact when a user opens a specially crafted file. All major Office release channels on both Windows and Mac are affected, including Microsoft 365 Apps for Enterprise, Office LTSC 2024/2021/2019/2016, and their Mac equivalents. No public exploit has been identified at time of analysis, but a vendor-released patch is available via the Microsoft Security Response Center.
Stack-based buffer overflow in Microsoft Office Word enables local arbitrary code execution when a user opens a maliciously crafted document. Affected products span Word 2016 through Microsoft 365 Apps for Enterprise and LTSC 2021/2024 on both Windows and macOS. No public exploit identified at time of analysis, but Microsoft has released patches across all affected product lines via the August 2026 security update cycle.
Code execution via buffer over-read in Microsoft Office Word affects multiple Windows and Mac Office product lines when a user opens a specially crafted document. The CVSS vector (AV:L/AC:L/PR:N/UI:R) confirms this is a local exploitation scenario requiring user interaction - consistent with a malicious document delivery attack - yielding full confidentiality, integrity, and availability impact on the affected system. No special privileges are required from the attacker. No public exploit code or CISA KEV listing was identified in the provided intelligence at time of analysis.
Type confusion (CWE-843) in Microsoft Office enables local code execution across multiple Office product lines when a user opens a crafted file. Affected versions span Microsoft Office 2019, LTSC 2021, LTSC 2024, and Microsoft 365 Apps for Enterprise on both Windows and macOS. With high confidentiality, integrity, and availability impact and user-interaction-only as the sole prerequisite, the vulnerability presents meaningful risk in phishing and malicious-document delivery scenarios. No public exploit identified at time of analysis, though a vendor patch is available.
Local code execution in Microsoft Office stems from an integer overflow that cascades into a heap-based buffer overflow (CWE-122), affecting Office 2016 through LTSC 2024 on both Windows and macOS. An unauthenticated attacker who can convince a target user to open a crafted Office document gains full code execution with the victim's privilege level - achieving high confidentiality, integrity, and availability impact per the CVSS:3.1 AV:L/C:H/I:H/A:H rating. No public exploit code or CISA KEV listing was identified at time of analysis, but the patch is vendor-confirmed and available via Microsoft's Security Update Guide.
Local code execution in Microsoft Office affects all major editions across Windows and macOS, including Microsoft 365 Apps for Enterprise, Office LTSC 2021/2024, Office 2019, and their Mac counterparts. The vulnerability is a heap-based buffer overflow (CWE-122) triggered when a user opens a specially crafted document, granting the attacker arbitrary code execution at the victim's privilege level. No public exploit has been identified at time of analysis, and a vendor-released patch is available, making this a high-priority patching target across enterprise Office deployments.
Heap-based buffer overflow in Microsoft Office allows local code execution across a wide range of Office versions on both Windows and macOS when a victim opens a specially crafted document. The CVSS vector (AV:L/AC:L/PR:N/UI:R) confirms that no privileges are required - only that a user interacts with malicious content - making this practically reachable via phishing or drive-by document delivery despite the local attack vector. No active exploitation has been confirmed in CISA KEV, and no public exploit code has been identified at time of analysis; a vendor-released patch is available.
Local code execution in Microsoft Office results from an integer overflow that leads to a heap-based buffer overflow (CWE-122), enabling an attacker to run arbitrary code at the privilege level of the logged-in user. Affected products span multiple Windows and Mac release tracks including Office 2016, 2019, LTSC 2021, LTSC 2024, and Microsoft 365 Apps for Enterprise. No public exploit or CISA KEV listing is present in the available data; however, the complete high CIA triad and wide deployment footprint make this a priority patching target.
Stack-based buffer overflow in Microsoft Office Word enables arbitrary code execution when a victim opens a specially crafted document, affecting Word 2016 through Microsoft 365 Apps and Office LTSC 2024 on both Windows and macOS. The flaw (CWE-121) scores CVSS 7.8 with high impacts across confidentiality, integrity, and availability, constrained by local attack vector and mandatory user interaction. No public exploit has been identified at time of analysis; a vendor patch is available via the Microsoft Security Response Center.
Stack-based buffer overflow in Microsoft Office (CWE-121) enables local code execution across a broad range of affected builds including Office 2016, 2019, LTSC 2021, LTSC 2024, Office 365 for Mac, LTSC for Mac 2021/2024, and Microsoft 365 Apps for Enterprise. Exploitation requires user interaction - consistent with a maliciously crafted document delivery model - and achieves full confidentiality, integrity, and availability compromise within the Office process context. No public exploit code or CISA KEV listing has been identified at time of analysis; a vendor-released patch is available via the MSRC advisory.
Local code execution in Microsoft Office is possible when a user opens a specially crafted document that triggers a heap-based buffer overflow (CWE-122), granting the attacker full control over the victim's user session. The vulnerability spans the entire modern Office portfolio - Microsoft 365 Apps for Enterprise, Office 2019, LTSC 2021, LTSC 2024, and macOS equivalents - making the attack surface exceptionally broad. No public exploit identified at time of analysis and the vulnerability is not listed in the CISA KEV catalog; Microsoft has released patches for all affected product lines.
Heap-based buffer overflow in Microsoft Office Word enables arbitrary local code execution when a user opens a specially crafted document. The vulnerability spans a broad set of affected products across both Windows and macOS platforms, including Office LTSC 2021/2024, Office 2019, Microsoft 365 Apps for Enterprise, Office 365 for Mac, and Outlook 2016. No public exploit code has been identified at time of analysis, though Microsoft has released a patch and the document-based delivery model is a proven and widely abused attack vector in enterprise phishing campaigns.
Out-of-bounds read (CWE-125) in Microsoft Office enables local code execution across a broad range of Office product editions on both Windows and macOS. The CVSS vector (AV:L/AC:L/PR:N/UI:R) confirms the attack requires no privileges but does require a victim to open a crafted file, consistent with a malicious document delivery scenario. A patch has been released by Microsoft; no public exploit code or CISA KEV listing has been identified at the time of analysis, though the full CIA impact (C:H/I:H/A:H) and breadth of affected products make this a high-priority patching target for enterprise environments.
Heap-based buffer overflow in Microsoft Office enables local code execution with high impact across confidentiality, integrity, and availability. Affecting Office 2016 through 2024, including LTSC and Microsoft 365 variants on both Windows and macOS, the vulnerability is triggered when a user opens a specially crafted document - requiring no privileges but mandatory user interaction (CVSS AV:L/UI:R). Patch is available from Microsoft; no public exploit identified at time of analysis.