Excel
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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.
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.
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.
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 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.
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.
Local spoofing in Microsoft Office for Android lets an unauthorized attacker manipulate trust-affecting content or identity indicators after a user interacts with malicious input on the device. The CVSS 7.1 score reflects high confidentiality and integrity impact with no special privileges required, though the local attack vector and required user interaction limit remote exploitability. No public exploit identified at time of analysis and the issue is not on the CISA KEV list.
Local code execution in Microsoft Office Excel results from an integer underflow (CWE-122 heap-based) that allows an unauthorized attacker to run arbitrary code in the context of the user opening a crafted spreadsheet. The CVSS 7.8 score reflects local attack vector with required user interaction, and no public exploit identified at time of analysis. Microsoft (secure@microsoft.com) is the originating CNA, and the issue is tagged as a buffer/heap overflow class flaw.
Local code execution in Microsoft Office Excel stems from an integer underflow that, when triggered by opening a crafted spreadsheet, allows an attacker to run arbitrary code in the context of the current user. The CVSS 3.1 vector (AV:L/AC:L/PR:N/UI:R) confirms exploitation requires the victim to open a malicious file, and there is no public exploit identified at time of analysis. With a base score of 7.8 and full confidentiality, integrity, and availability impact, successful exploitation effectively gives the attacker the victim's privileges on the host.
Information disclosure in Microsoft Office Excel allows remote unauthenticated attackers to read out-of-bounds memory over a network, potentially exposing sensitive data from process memory. The CVSS 8.2 score reflects high confidentiality impact with no authentication or user interaction required per the CVSS vector. No public exploit identified at time of analysis and the vulnerability is not currently listed in CISA KEV.
Local code execution in Microsoft Office Excel stems from an integer underflow condition that can be triggered when a victim opens a malicious spreadsheet, leading to out-of-bounds memory access (CWE-125). The flaw requires user interaction but no prior authentication on the target, and no public exploit identified at time of analysis. With a CVSS of 7.8 (high) and the typical phishing-friendly delivery model of Office files, this fits the profile of a document-based client-side RCE primitive.
Local code execution in Microsoft Office Excel can be achieved by an unauthenticated attacker who tricks a user into opening a malicious spreadsheet that triggers an integer underflow condition. The flaw carries a CVSS 7.0 rating reflecting high attack complexity and required user interaction, and no public exploit identified at time of analysis. There is a notable mismatch between the description (integer underflow) and the assigned CWE-362 (race condition), which warrants verification with Microsoft's advisory.
Local code execution in Microsoft Office Excel arises from an integer underflow condition that corrupts memory when a malicious spreadsheet is opened. The flaw requires user interaction (UI:R) to trigger but needs no prior authentication, enabling attackers to run arbitrary code in the security context of the victim user. At the time of analysis, no public exploit identified at time of analysis and the issue is not listed in CISA KEV.
Local code execution in Microsoft Windows Win32K GRFX (graphics) subsystem allows an attacker with low-privilege local access to run arbitrary code by triggering an integer overflow, after coaxing a user into interacting with a crafted graphics object. No public exploit identified at time of analysis, and the issue is not listed in CISA KEV, though Win32K bugs historically attract rapid exploit development for privilege escalation in post-compromise chains.
Local code execution in the Windows Win32K GRFX (graphics) subsystem allows an unauthorized attacker with the ability to run code locally to escalate privileges through an integer overflow. The flaw was reported by Microsoft (MSRC) and carries a CVSS 7.8, but requires user interaction (UI:R) and local access (AV:L), and no public exploit identified at time of analysis.
Microsoft Excel and Office products are vulnerable to local code execution through unsafe pointer dereferencing, requiring user interaction to trigger. An attacker with local access can exploit this flaw to achieve arbitrary code execution with full system privileges. No patch is currently available, leaving users of affected Office versions at risk.
Arbitrary code execution in Microsoft Office Excel and related products (Office Online Server, 365 Apps) via out-of-bounds memory read allows local attackers to achieve complete system compromise without requiring user interaction or elevated privileges. This high-severity vulnerability affects multiple Microsoft Office components and currently lacks a security patch. An attacker with local access can exploit memory corruption to execute malicious code with full system permissions.
Heap buffer overflow in Microsoft Office Excel enables local code execution with high integrity and confidentiality impact affecting Office, Office Online Server, and 365 Apps. An attacker with user interaction can achieve arbitrary code execution in the context of the affected application. No patch is currently available for this vulnerability.
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally. [CVSS 7.8 HIGH]
Privilege escalation in Microsoft Office Excel (including 365 Apps and Long Term Servicing Channel) via heap-based buffer overflow allows local attackers with user interaction to gain elevated system privileges. The vulnerability affects multiple Office product lines and currently lacks a security patch. With a CVSS score of 7.8, this poses a significant risk to organizations using affected Excel versions.
Arbitrary code execution in Microsoft Office Excel results from an integer underflow vulnerability in the Long Term Servicing Channel and Online Server editions, exploitable by local attackers with user interaction. This HIGH severity flaw (CVSS 7.8) grants full system compromise capabilities including code execution, data theft, and service disruption with no available patch.
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally. [CVSS 7.8 HIGH]
Local code execution in Microsoft Office Excel occurs through an out-of-bounds memory read vulnerability affecting the Long Term Servicing Channel, Office 365 Apps, and standalone Office installations. An attacker with local access and user interaction can exploit this flaw to achieve arbitrary code execution with full system privileges. No patch is currently available for this high-severity vulnerability.
Microsoft Excel Security Feature Bypass Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity.
A remote code execution vulnerability exists in Microsoft Excel software when the software fails to properly handle objects in memory, aka 'Microsoft Excel Remote Code Execution Vulnerability'. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Out-of-bounds read in Microsoft Office Excel's file parser allows a local attacker to disclose process memory contents when a victim opens a specially crafted Excel document. Affected across all major release channels including Excel 2016, Office 2019, LTSC 2021, LTSC 2024, Microsoft 365 Apps for Enterprise, and Mac variants. No public exploit has been identified at time of analysis, and SSVC classifies exploitation as none with non-automatable delivery.
Uninitialized resource use (CWE-908) in Microsoft Excel allows a local attacker to disclose process memory contents when a user opens a specially crafted workbook. Affected products span Excel 2016 through Microsoft 365 Apps for Enterprise on both Windows and macOS, with vendor patches released across all Windows builds. No public exploit has been identified and SSVC rates exploitation as none with partial technical impact, placing real-world risk firmly in the moderate range despite the C:H CVSS metric.
Type confusion (CWE-843) in Microsoft Office Excel enables local information disclosure when a victim opens a specially crafted Excel file. Affected products span Excel 2016, Office 2019, Office LTSC 2021/2024, Microsoft 365 Apps for Enterprise, Office Online Server, and multiple Mac Office variants. The vulnerability carries a CVSS 5.5 with High confidentiality impact but no integrity or availability impact; no public exploit or active exploitation has been identified at time of analysis.
Out-of-bounds memory read in Microsoft Excel exposes potentially sensitive in-process memory contents when a user opens a specially crafted workbook. Affects a wide range of Office versions including Microsoft 365 Apps for Enterprise, Office 2016 through LTSC 2024, and Office for Mac editions. SSVC assessment rates exploitation as none with non-automatable attack delivery, and Microsoft has released patches addressing all affected branches. No public exploit or CISA KEV listing exists at time of analysis.
Buffer over-read (CWE-126) in Microsoft Office Excel allows a local attacker to disclose potentially sensitive process memory when a user opens a crafted Excel workbook. The flaw spans a broad range of Office versions from 2016 through LTSC 2024, including Microsoft 365 Apps for Enterprise and Mac variants, making the affected footprint very large. No public exploit code or CISA KEV listing has been identified; exploitation depends on social engineering to deliver a malicious file to the local system.
Out-of-bounds read in Microsoft Excel allows a local, unauthenticated attacker to disclose potentially sensitive memory contents by convincing a user to open a specially crafted workbook. Affected builds span Excel 2016 through Microsoft 365 Apps for Enterprise on both Windows and macOS. No public exploit code exists and CISA SSVC rates exploitation as 'none' with partial technical impact, making this a moderate-priority patch-cycle item rather than an urgent emergency.
Sensitive system information disclosure in Microsoft Excel allows a local, unauthenticated attacker to read high-confidentiality data when a victim opens a specially crafted spreadsheet. Affecting Office 2016 through LTSC 2024 on both Windows and Mac, the flaw (CWE-497) exposes internal system data - such as memory layout, environment variables, or path information - to an unauthorized control sphere during file parsing. No public exploit has been identified at time of analysis, and Microsoft has released patches across all affected product lines.
Out-of-bounds read in Microsoft Excel discloses sensitive memory contents when a victim opens a specially crafted Excel file. The vulnerability spans a wide range of affected versions including Excel 2016, Office 2019, LTSC 2021/2024, Office 365 for Mac, and Microsoft 365 Apps for Enterprise, making the patch surface broad across enterprise environments. No public exploit or active exploitation has been identified at time of analysis; vendor patch is available via MSRC.
Out-of-bounds read in Microsoft Excel across Office 2016 through 365 Apps for Enterprise permits a local, unauthenticated attacker to disclose sensitive memory contents when a victim opens a specially crafted spreadsheet file. The vulnerability carries a CVSS 5.5 score reflecting the local delivery requirement and confidentiality-only impact, with no integrity or availability consequences. No public exploit code or active exploitation has been identified at time of analysis, and vendor patches are available for all major Windows Office editions.
Uninitialized memory disclosure in Microsoft Excel exposes potentially sensitive heap or stack contents when a victim opens a crafted document, allowing an unauthenticated attacker to read process memory with high confidentiality impact. Affected product lines span Excel 2016 through Microsoft 365 Apps for Enterprise and multiple Mac variants, making this a broad-surface vulnerability. No public exploit code and no CISA KEV listing have been identified at time of analysis; SSVC assessment rates exploitation as 'none' with non-automatable delivery, limiting realistic risk to targeted document-delivery campaigns.
Out-of-bounds read in Microsoft Office Excel's file parser allows local information disclosure when a victim opens a specially crafted workbook. Affecting Excel 2016 through Microsoft 365 Apps for Enterprise, Office LTSC 2024, Office Online Server, and multiple macOS Office variants, the vulnerability (CWE-125) exposes process memory with high confidentiality impact but no integrity or availability consequences. Microsoft has released patched builds via MSRC; SSVC confirms no active exploitation and non-automatable delivery, placing this squarely within standard monthly patch-cycle priority.
Microsoft Office Excel exposes sensitive system information to an unauthorized control sphere (CWE-497), enabling local information disclosure when a victim opens a specially crafted Excel file. The vulnerability spans Excel 2016 through Microsoft 365 Apps for Enterprise and multiple LTSC editions on both Windows and Mac. No public exploit code has been identified and the vulnerability is not listed in CISA KEV, though the C:H CVSS confidentiality rating indicates the quality or quantity of information that can be exfiltrated is significant.
Out-of-bounds read in Microsoft Office Excel enables remote information disclosure when a user opens a specially crafted spreadsheet. The CVSS vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N) confirms that an unauthenticated network-based attacker can trigger the flaw, but only after social engineering a victim into opening a malicious file. No public exploit code and no CISA KEV listing have been identified at time of analysis; Microsoft has released patches across all affected Office product lines.
Out-of-bounds read in Microsoft Excel exposes sensitive memory contents over a network to unauthenticated remote attackers, resulting in high-confidence information disclosure (C:H). Exploitation requires user interaction - specifically, opening a crafted Excel document - placing this firmly in the phishing/malicious-attachment delivery class. No active exploitation has been confirmed (not listed in CISA KEV), and no public exploit code has been identified at the time of analysis, though the patch is available and should be applied promptly given the ubiquity of the affected product across enterprise environments.
Out-of-bounds read in Microsoft Excel exposes process memory to local information disclosure across a wide range of Office versions, from Excel 2016 through Microsoft 365 Apps for Enterprise and multiple LTSC releases on both Windows and macOS. The CVSS 3.1 vector (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N) confirms exploitation requires the victim to open a specially crafted spreadsheet file, making phishing-delivered documents the realistic delivery mechanism. 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 (CWE-125) in Microsoft Excel triggers information disclosure when a victim opens a specially crafted spreadsheet file, exposing potentially sensitive memory contents to a local attacker. The flaw spans multiple Office product lines - Excel 2016, Office 2019, Office LTSC 2021/2024, Microsoft 365 Apps for Enterprise, and corresponding Mac variants - with high confidentiality impact but no integrity or availability consequences. No public exploit has been identified and SSVC confirms no known exploitation; a vendor patch is available via the Microsoft Security Response Center.
Out-of-bounds read in Microsoft Excel enables local information disclosure when a user opens a specially crafted spreadsheet. Multiple product lines are affected across Windows and macOS, spanning Excel 2016, Office 2019, LTSC 2021, LTSC 2024, Office 365 for Mac, and Microsoft 365 Apps for Enterprise. Microsoft has released patches; no public exploit code has been identified at time of analysis, and this vulnerability is not listed in the CISA KEV catalog.
Out-of-bounds read in Microsoft Excel exposes limited memory contents to a local attacker when a user opens a specially crafted workbook. Affected product lines span Excel 2016, Office 2019, Office LTSC 2021/2024, Microsoft 365 Apps for Enterprise, Office Online Server, and multiple Mac variants. With a CVSS score of 3.3 (Low), no public exploit identified at time of analysis, and no CISA KEV listing, this is a low-urgency information disclosure issue - though a notable conflict exists between the description's claim of network-based disclosure and the CVSS AV:L (local) vector that warrants verification against the vendor advisory.
Information disclosure in Microsoft Office Excel and related products results from an out-of-bounds read vulnerability that requires local access and user interaction to exploit. An attacker can leverage this flaw to read sensitive data from memory on an affected system. No patch is currently available for this vulnerability affecting Office Long Term Servicing Channel, 365 Apps, and Office Online Server.
Information disclosure in Microsoft Excel allows local attackers with user interaction to read sensitive data through improper input validation in Office 365 Apps and Long Term Servicing Channel. An attacker must socially engineer a user into opening a specially crafted file to trigger the vulnerability. No patch is currently available for this medium-severity issue.
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally. Rated high severity (CVSS 7.1), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Use after free in Microsoft Office allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally. Rated high severity (CVSS 7.1), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Exposure of sensitive information to an unauthorized actor in Microsoft Office Excel allows an unauthorized attacker to disclose information locally. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Buffer over-read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Free of memory not on the heap in Microsoft Office Excel allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
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.
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.
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.
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 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.
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.
Local spoofing in Microsoft Office for Android lets an unauthorized attacker manipulate trust-affecting content or identity indicators after a user interacts with malicious input on the device. The CVSS 7.1 score reflects high confidentiality and integrity impact with no special privileges required, though the local attack vector and required user interaction limit remote exploitability. No public exploit identified at time of analysis and the issue is not on the CISA KEV list.
Local code execution in Microsoft Office Excel results from an integer underflow (CWE-122 heap-based) that allows an unauthorized attacker to run arbitrary code in the context of the user opening a crafted spreadsheet. The CVSS 7.8 score reflects local attack vector with required user interaction, and no public exploit identified at time of analysis. Microsoft (secure@microsoft.com) is the originating CNA, and the issue is tagged as a buffer/heap overflow class flaw.
Local code execution in Microsoft Office Excel stems from an integer underflow that, when triggered by opening a crafted spreadsheet, allows an attacker to run arbitrary code in the context of the current user. The CVSS 3.1 vector (AV:L/AC:L/PR:N/UI:R) confirms exploitation requires the victim to open a malicious file, and there is no public exploit identified at time of analysis. With a base score of 7.8 and full confidentiality, integrity, and availability impact, successful exploitation effectively gives the attacker the victim's privileges on the host.
Information disclosure in Microsoft Office Excel allows remote unauthenticated attackers to read out-of-bounds memory over a network, potentially exposing sensitive data from process memory. The CVSS 8.2 score reflects high confidentiality impact with no authentication or user interaction required per the CVSS vector. No public exploit identified at time of analysis and the vulnerability is not currently listed in CISA KEV.
Local code execution in Microsoft Office Excel stems from an integer underflow condition that can be triggered when a victim opens a malicious spreadsheet, leading to out-of-bounds memory access (CWE-125). The flaw requires user interaction but no prior authentication on the target, and no public exploit identified at time of analysis. With a CVSS of 7.8 (high) and the typical phishing-friendly delivery model of Office files, this fits the profile of a document-based client-side RCE primitive.
Local code execution in Microsoft Office Excel can be achieved by an unauthenticated attacker who tricks a user into opening a malicious spreadsheet that triggers an integer underflow condition. The flaw carries a CVSS 7.0 rating reflecting high attack complexity and required user interaction, and no public exploit identified at time of analysis. There is a notable mismatch between the description (integer underflow) and the assigned CWE-362 (race condition), which warrants verification with Microsoft's advisory.
Local code execution in Microsoft Office Excel arises from an integer underflow condition that corrupts memory when a malicious spreadsheet is opened. The flaw requires user interaction (UI:R) to trigger but needs no prior authentication, enabling attackers to run arbitrary code in the security context of the victim user. At the time of analysis, no public exploit identified at time of analysis and the issue is not listed in CISA KEV.
Local code execution in Microsoft Windows Win32K GRFX (graphics) subsystem allows an attacker with low-privilege local access to run arbitrary code by triggering an integer overflow, after coaxing a user into interacting with a crafted graphics object. No public exploit identified at time of analysis, and the issue is not listed in CISA KEV, though Win32K bugs historically attract rapid exploit development for privilege escalation in post-compromise chains.
Local code execution in the Windows Win32K GRFX (graphics) subsystem allows an unauthorized attacker with the ability to run code locally to escalate privileges through an integer overflow. The flaw was reported by Microsoft (MSRC) and carries a CVSS 7.8, but requires user interaction (UI:R) and local access (AV:L), and no public exploit identified at time of analysis.
Microsoft Excel and Office products are vulnerable to local code execution through unsafe pointer dereferencing, requiring user interaction to trigger. An attacker with local access can exploit this flaw to achieve arbitrary code execution with full system privileges. No patch is currently available, leaving users of affected Office versions at risk.
Arbitrary code execution in Microsoft Office Excel and related products (Office Online Server, 365 Apps) via out-of-bounds memory read allows local attackers to achieve complete system compromise without requiring user interaction or elevated privileges. This high-severity vulnerability affects multiple Microsoft Office components and currently lacks a security patch. An attacker with local access can exploit memory corruption to execute malicious code with full system permissions.
Heap buffer overflow in Microsoft Office Excel enables local code execution with high integrity and confidentiality impact affecting Office, Office Online Server, and 365 Apps. An attacker with user interaction can achieve arbitrary code execution in the context of the affected application. No patch is currently available for this vulnerability.
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally. [CVSS 7.8 HIGH]
Privilege escalation in Microsoft Office Excel (including 365 Apps and Long Term Servicing Channel) via heap-based buffer overflow allows local attackers with user interaction to gain elevated system privileges. The vulnerability affects multiple Office product lines and currently lacks a security patch. With a CVSS score of 7.8, this poses a significant risk to organizations using affected Excel versions.
Arbitrary code execution in Microsoft Office Excel results from an integer underflow vulnerability in the Long Term Servicing Channel and Online Server editions, exploitable by local attackers with user interaction. This HIGH severity flaw (CVSS 7.8) grants full system compromise capabilities including code execution, data theft, and service disruption with no available patch.
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally. [CVSS 7.8 HIGH]
Local code execution in Microsoft Office Excel occurs through an out-of-bounds memory read vulnerability affecting the Long Term Servicing Channel, Office 365 Apps, and standalone Office installations. An attacker with local access and user interaction can exploit this flaw to achieve arbitrary code execution with full system privileges. No patch is currently available for this high-severity vulnerability.
Microsoft Excel Security Feature Bypass Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity.
A remote code execution vulnerability exists in Microsoft Excel software when the software fails to properly handle objects in memory, aka 'Microsoft Excel Remote Code Execution Vulnerability'. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Out-of-bounds read in Microsoft Office Excel's file parser allows a local attacker to disclose process memory contents when a victim opens a specially crafted Excel document. Affected across all major release channels including Excel 2016, Office 2019, LTSC 2021, LTSC 2024, Microsoft 365 Apps for Enterprise, and Mac variants. No public exploit has been identified at time of analysis, and SSVC classifies exploitation as none with non-automatable delivery.
Uninitialized resource use (CWE-908) in Microsoft Excel allows a local attacker to disclose process memory contents when a user opens a specially crafted workbook. Affected products span Excel 2016 through Microsoft 365 Apps for Enterprise on both Windows and macOS, with vendor patches released across all Windows builds. No public exploit has been identified and SSVC rates exploitation as none with partial technical impact, placing real-world risk firmly in the moderate range despite the C:H CVSS metric.
Type confusion (CWE-843) in Microsoft Office Excel enables local information disclosure when a victim opens a specially crafted Excel file. Affected products span Excel 2016, Office 2019, Office LTSC 2021/2024, Microsoft 365 Apps for Enterprise, Office Online Server, and multiple Mac Office variants. The vulnerability carries a CVSS 5.5 with High confidentiality impact but no integrity or availability impact; no public exploit or active exploitation has been identified at time of analysis.
Out-of-bounds memory read in Microsoft Excel exposes potentially sensitive in-process memory contents when a user opens a specially crafted workbook. Affects a wide range of Office versions including Microsoft 365 Apps for Enterprise, Office 2016 through LTSC 2024, and Office for Mac editions. SSVC assessment rates exploitation as none with non-automatable attack delivery, and Microsoft has released patches addressing all affected branches. No public exploit or CISA KEV listing exists at time of analysis.
Buffer over-read (CWE-126) in Microsoft Office Excel allows a local attacker to disclose potentially sensitive process memory when a user opens a crafted Excel workbook. The flaw spans a broad range of Office versions from 2016 through LTSC 2024, including Microsoft 365 Apps for Enterprise and Mac variants, making the affected footprint very large. No public exploit code or CISA KEV listing has been identified; exploitation depends on social engineering to deliver a malicious file to the local system.
Out-of-bounds read in Microsoft Excel allows a local, unauthenticated attacker to disclose potentially sensitive memory contents by convincing a user to open a specially crafted workbook. Affected builds span Excel 2016 through Microsoft 365 Apps for Enterprise on both Windows and macOS. No public exploit code exists and CISA SSVC rates exploitation as 'none' with partial technical impact, making this a moderate-priority patch-cycle item rather than an urgent emergency.
Sensitive system information disclosure in Microsoft Excel allows a local, unauthenticated attacker to read high-confidentiality data when a victim opens a specially crafted spreadsheet. Affecting Office 2016 through LTSC 2024 on both Windows and Mac, the flaw (CWE-497) exposes internal system data - such as memory layout, environment variables, or path information - to an unauthorized control sphere during file parsing. No public exploit has been identified at time of analysis, and Microsoft has released patches across all affected product lines.
Out-of-bounds read in Microsoft Excel discloses sensitive memory contents when a victim opens a specially crafted Excel file. The vulnerability spans a wide range of affected versions including Excel 2016, Office 2019, LTSC 2021/2024, Office 365 for Mac, and Microsoft 365 Apps for Enterprise, making the patch surface broad across enterprise environments. No public exploit or active exploitation has been identified at time of analysis; vendor patch is available via MSRC.
Out-of-bounds read in Microsoft Excel across Office 2016 through 365 Apps for Enterprise permits a local, unauthenticated attacker to disclose sensitive memory contents when a victim opens a specially crafted spreadsheet file. The vulnerability carries a CVSS 5.5 score reflecting the local delivery requirement and confidentiality-only impact, with no integrity or availability consequences. No public exploit code or active exploitation has been identified at time of analysis, and vendor patches are available for all major Windows Office editions.
Uninitialized memory disclosure in Microsoft Excel exposes potentially sensitive heap or stack contents when a victim opens a crafted document, allowing an unauthenticated attacker to read process memory with high confidentiality impact. Affected product lines span Excel 2016 through Microsoft 365 Apps for Enterprise and multiple Mac variants, making this a broad-surface vulnerability. No public exploit code and no CISA KEV listing have been identified at time of analysis; SSVC assessment rates exploitation as 'none' with non-automatable delivery, limiting realistic risk to targeted document-delivery campaigns.
Out-of-bounds read in Microsoft Office Excel's file parser allows local information disclosure when a victim opens a specially crafted workbook. Affecting Excel 2016 through Microsoft 365 Apps for Enterprise, Office LTSC 2024, Office Online Server, and multiple macOS Office variants, the vulnerability (CWE-125) exposes process memory with high confidentiality impact but no integrity or availability consequences. Microsoft has released patched builds via MSRC; SSVC confirms no active exploitation and non-automatable delivery, placing this squarely within standard monthly patch-cycle priority.
Microsoft Office Excel exposes sensitive system information to an unauthorized control sphere (CWE-497), enabling local information disclosure when a victim opens a specially crafted Excel file. The vulnerability spans Excel 2016 through Microsoft 365 Apps for Enterprise and multiple LTSC editions on both Windows and Mac. No public exploit code has been identified and the vulnerability is not listed in CISA KEV, though the C:H CVSS confidentiality rating indicates the quality or quantity of information that can be exfiltrated is significant.
Out-of-bounds read in Microsoft Office Excel enables remote information disclosure when a user opens a specially crafted spreadsheet. The CVSS vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N) confirms that an unauthenticated network-based attacker can trigger the flaw, but only after social engineering a victim into opening a malicious file. No public exploit code and no CISA KEV listing have been identified at time of analysis; Microsoft has released patches across all affected Office product lines.
Out-of-bounds read in Microsoft Excel exposes sensitive memory contents over a network to unauthenticated remote attackers, resulting in high-confidence information disclosure (C:H). Exploitation requires user interaction - specifically, opening a crafted Excel document - placing this firmly in the phishing/malicious-attachment delivery class. No active exploitation has been confirmed (not listed in CISA KEV), and no public exploit code has been identified at the time of analysis, though the patch is available and should be applied promptly given the ubiquity of the affected product across enterprise environments.
Out-of-bounds read in Microsoft Excel exposes process memory to local information disclosure across a wide range of Office versions, from Excel 2016 through Microsoft 365 Apps for Enterprise and multiple LTSC releases on both Windows and macOS. The CVSS 3.1 vector (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N) confirms exploitation requires the victim to open a specially crafted spreadsheet file, making phishing-delivered documents the realistic delivery mechanism. 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 (CWE-125) in Microsoft Excel triggers information disclosure when a victim opens a specially crafted spreadsheet file, exposing potentially sensitive memory contents to a local attacker. The flaw spans multiple Office product lines - Excel 2016, Office 2019, Office LTSC 2021/2024, Microsoft 365 Apps for Enterprise, and corresponding Mac variants - with high confidentiality impact but no integrity or availability consequences. No public exploit has been identified and SSVC confirms no known exploitation; a vendor patch is available via the Microsoft Security Response Center.
Out-of-bounds read in Microsoft Excel enables local information disclosure when a user opens a specially crafted spreadsheet. Multiple product lines are affected across Windows and macOS, spanning Excel 2016, Office 2019, LTSC 2021, LTSC 2024, Office 365 for Mac, and Microsoft 365 Apps for Enterprise. Microsoft has released patches; no public exploit code has been identified at time of analysis, and this vulnerability is not listed in the CISA KEV catalog.
Out-of-bounds read in Microsoft Excel exposes limited memory contents to a local attacker when a user opens a specially crafted workbook. Affected product lines span Excel 2016, Office 2019, Office LTSC 2021/2024, Microsoft 365 Apps for Enterprise, Office Online Server, and multiple Mac variants. With a CVSS score of 3.3 (Low), no public exploit identified at time of analysis, and no CISA KEV listing, this is a low-urgency information disclosure issue - though a notable conflict exists between the description's claim of network-based disclosure and the CVSS AV:L (local) vector that warrants verification against the vendor advisory.
Information disclosure in Microsoft Office Excel and related products results from an out-of-bounds read vulnerability that requires local access and user interaction to exploit. An attacker can leverage this flaw to read sensitive data from memory on an affected system. No patch is currently available for this vulnerability affecting Office Long Term Servicing Channel, 365 Apps, and Office Online Server.
Information disclosure in Microsoft Excel allows local attackers with user interaction to read sensitive data through improper input validation in Office 365 Apps and Long Term Servicing Channel. An attacker must socially engineer a user into opening a specially crafted file to trigger the vulnerability. No patch is currently available for this medium-severity issue.
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally. Rated high severity (CVSS 7.1), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Use after free in Microsoft Office allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally. Rated high severity (CVSS 7.1), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Exposure of sensitive information to an unauthorized actor in Microsoft Office Excel allows an unauthorized attacker to disclose information locally. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Buffer over-read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Free of memory not on the heap in Microsoft Office Excel allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.