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420 CVEs product

Monthly

CVE-2026-47293 HIGH PATCH Exploit Unlikely This Week

Local privilege escalation in Microsoft Office Click-To-Run stems from a use-after-free condition (CWE-416) that lets an authorized low-privilege user elevate to higher privileges on the host. The flaw, reported by Microsoft's MSRC, carries a CVSS 7.0 (AV:L/AC:H/PR:L) reflecting that exploitation requires local access, low privileges, and a successful race-window or memory-state condition. No public exploit identified at time of analysis, and the vulnerability is not currently listed in CISA KEV.

Microsoft Use After Free Memory Corruption Denial Of Service 365 Apps +3
NVD VulDB
CVSS 3.1
7.0
EPSS
0.1%
CVE-2026-45645 HIGH PATCH Exploit Unlikely This Week

Local code execution in Microsoft Office is possible through a heap-based buffer overflow (CWE-822) that triggers when a user opens a maliciously crafted document. The CVSS 7.8 vector (AV:L/AC:L/PR:N/UI:R) reflects a classic client-side file-format attack requiring user interaction but no prior authentication, yielding full confidentiality, integrity, and availability impact on the targeted workstation. There is no public exploit identified at time of analysis and the CVE is not listed in CISA KEV, but Office document parsers are historically high-value targets and the vulnerability was reported by Microsoft's own MSRC team.

Microsoft Buffer Overflow 365 Apps Microsoft 365 Office 2016 +3
NVD VulDB
CVSS 3.1
7.8
EPSS
0.1%
CVE-2026-45643 HIGH PATCH Exploit Unlikely This Week

Local code execution in Microsoft Office Word arises from an untrusted pointer dereference (CWE-822) that can be triggered when a victim opens a crafted document. Successful exploitation grants the attacker the privileges of the current user with high impact to confidentiality, integrity, and availability, though no public exploit identified at time of analysis. The CVSS 3.1 base score of 7.8 reflects the requirement for user interaction but no prior authentication.

Authentication Bypass Microsoft 365 Apps Microsoft 365 Office 2021 +1
NVD VulDB
CVSS 3.1
7.8
EPSS
0.1%
CVE-2026-45486 HIGH PATCH Exploit Unlikely This Week

Local code execution in Microsoft Office Word is possible when a user opens a maliciously crafted document that triggers an untrusted pointer dereference (CWE-416 use-after-free). The flaw lets an unauthorized attacker execute arbitrary code in the context of the current user, and no public exploit identified at time of analysis. Risk hinges on user interaction (UI:R), making phishing-style document delivery the realistic attack pathway.

Microsoft Authentication Bypass Use After Free Memory Corruption 365 Apps +3
NVD VulDB
CVSS 3.1
7.8
EPSS
0.1%
CVE-2026-45485 LOW PATCH Exploit Unlikely Monitor

Out-of-bounds read in Microsoft Office and SharePoint Server exposes low-level memory contents to a local attacker when a victim opens a crafted document. Affected products span Microsoft 365 Apps for Enterprise, Office 2016/2019/LTSC 2021/2024, Office for Mac variants, and SharePoint Server 2016/2019/Subscription Edition - all at version 16.0.x baselines. The CVSS score of 3.3 (Low) reflects constrained impact: confidentiality is only partially affected, integrity and availability are untouched, and exploitation requires both local access and user interaction. No public exploit identified at time of analysis, and the vulnerability is not listed in the CISA KEV catalog.

Information Disclosure Microsoft Buffer Overflow 365 Apps Microsoft 365 +5
NVD VulDB
CVSS 3.1
3.3
EPSS
0.1%
CVE-2026-45475 HIGH PATCH Exploit Unlikely This Week

Local code execution in Microsoft Office is possible through a heap-based buffer overflow (CWE-122) that an unauthenticated attacker can trigger when a user opens a crafted document. The CVSS 3.1 base score of 7.8 reflects high impact to confidentiality, integrity, and availability, with required user interaction limiting mass exploitation. There is no public exploit identified at time of analysis and the issue is not currently listed on the CISA KEV catalog.

Heap Overflow Microsoft Buffer Overflow 365 Apps Microsoft 365 +5
NVD VulDB
CVSS 3.1
7.8
EPSS
0.1%
CVE-2026-45474 HIGH PATCH NEWS Exploit Unlikely This Week

Local code execution in Microsoft Office is possible through a heap-based buffer overflow that an unauthorized attacker can trigger without user interaction. The flaw carries a CVSS 3.1 score of 8.4 with high impact across confidentiality, integrity, and availability, and no public exploit identified at time of analysis. Despite requiring local access, the absence of authentication and user-interaction requirements makes this a notable priority for endpoint patching cycles.

Microsoft Use After Free Memory Corruption Buffer Overflow 365 Apps +6
NVD VulDB
CVSS 3.1
8.4
EPSS
0.1%
CVE-2026-45472 HIGH PATCH NEWS Exploit Unlikely This Week

Local code execution in Microsoft Office via a heap-based buffer overflow allows an unauthorized attacker to run arbitrary code with the privileges of the user opening a malicious document. The CVSS vector (AV:L/PR:N/UI:N) indicates local attack vector without required authentication or user interaction, an unusual combination that warrants verification against the vendor advisory. No public exploit identified at time of analysis and the issue is not currently listed in CISA KEV.

Microsoft Use After Free Memory Corruption Buffer Overflow 365 Apps +6
NVD VulDB
CVSS 3.1
8.4
EPSS
0.1%
CVE-2026-45471 HIGH PATCH Exploit Unlikely This Week

Local code execution in Microsoft Office Word enables an attacker to run arbitrary code in the context of the current user by tricking them into opening a malicious document that triggers an untrusted pointer dereference. With a CVSS 7.8 score and no public exploit identified at time of analysis, the flaw is exploited locally but unauthenticated, relying on user interaction to open a crafted file. Microsoft has issued an advisory via the MSRC Security Update Guide.

Authentication Bypass Microsoft 365 Apps Microsoft 365 Office 2019 +4
NVD VulDB
CVSS 3.1
7.8
EPSS
0.1%
CVE-2026-45469 HIGH PATCH Exploit Unlikely This Week

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.

Heap Overflow Microsoft Buffer Overflow 365 Apps Excel +5
NVD VulDB
CVSS 3.1
7.8
EPSS
0.1%
CVE-2026-45466 LOW PATCH Monitor

Heap-based buffer overflow in Microsoft Office Word exposes limited local memory contents when a user opens a specially crafted document. Affecting multiple Office product lines including Microsoft 365 Apps for Enterprise, Office LTSC 2021, LTSC 2024, and their Mac counterparts, the vulnerability carries a CVSS score of 3.3 (Low) and is constrained to confidentiality impact only, with no integrity or availability consequences. No public exploit code has been identified at time of analysis, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.

Heap Overflow Microsoft Buffer Overflow 365 Apps Microsoft 365 +2
NVD VulDB
CVSS 3.1
3.3
EPSS
0.1%
CVE-2026-45463 HIGH PATCH NEWS Exploit Unlikely This Week

Local code execution in Microsoft Office is possible via a heap-based buffer overflow that an unauthorized attacker can trigger without user interaction, yielding full confidentiality, integrity, and availability impact on the host. The flaw is rated 8.4 (CVSS:3.1) and was disclosed by Microsoft's Security Response Center, but no public exploit has been identified at the time of analysis. Despite the CWE-121 tagging as a stack overflow, the description and CWE-122 class indicate the corruption occurs on the heap, so defenders should treat this as a memory-corruption RCE-class issue requiring prompt patching.

Microsoft Stack Overflow Buffer Overflow 365 Apps 365 Copilot +5
NVD VulDB
CVSS 3.1
8.4
EPSS
0.1%
CVE-2026-45461 HIGH PATCH NEWS Exploit Unlikely This Week

Local code execution in Microsoft Office via a heap-based buffer overflow that lets an unauthorized attacker run arbitrary code in the context of the current user. The flaw carries a CVSS 8.4 rating driven by high impact across confidentiality, integrity, and availability, and no public exploit identified at time of analysis. Despite the 'unauthorized' wording, the CVSS vector specifies a local attack vector, indicating the attacker must already be able to deliver a crafted file or run code on the target system.

Microsoft Use After Free Memory Corruption Buffer Overflow 365 Apps +6
NVD VulDB
CVSS 3.1
8.4
EPSS
0.1%
CVE-2026-45460 MEDIUM PATCH NEWS This Month

Out-of-bounds read (buffer over-read) in Microsoft Office exposes sensitive memory contents to a local attacker who can induce a user to open a specially crafted file. Affecting a broad surface including Microsoft 365 Apps for Enterprise, Office LTSC 2021/2024, Office 2019, and mobile/Mac variants, the vulnerability carries a CVSS 4.7 (Medium) with high confidentiality impact but no integrity or availability consequence. No public exploit identified at time of analysis and the vulnerability is not listed in CISA KEV, but the wide deployment footprint of Microsoft Office makes even targeted information disclosure attacks operationally significant.

Microsoft Buffer Overflow 365 Apps 365 Copilot Microsoft 365 +3
NVD VulDB
CVSS 3.1
4.7
EPSS
0.1%
CVE-2026-45459 LOW PATCH Exploit Unlikely Monitor

Excel across multiple Microsoft Office product lines fails to properly enforce an internal protection mechanism, enabling a local attacker to bypass a security feature and access limited confidential data within the process context. Affected builds span Microsoft 365 Apps for Enterprise, Office LTSC 2024, and Mac variants of Office. With a CVSS score of 3.3, this is a low-severity finding - no public exploit has been identified at time of analysis, and exploitation requires both local system access and deliberate user interaction.

Authentication Bypass Microsoft 365 Apps Microsoft 365 Office 2021 +1
NVD VulDB
CVSS 3.1
3.3
EPSS
0.1%
CVE-2026-45458 HIGH PATCH NEWS Exploit Unlikely This Week

Local code execution in Microsoft Office via a type confusion flaw (CWE-416) permits unauthorized attackers to run arbitrary code in the context of the Office process without requiring privileges or user interaction. The issue carries a high CVSS 3.1 score of 8.4 with full impact across confidentiality, integrity, and availability, though exploitation requires local attack vector access to the target system. No public exploit identified at time of analysis, and the vulnerability is not currently listed in CISA KEV.

Microsoft Authentication Bypass Use After Free Memory Corruption 365 Apps +6
NVD VulDB
CVSS 3.1
8.4
EPSS
0.1%
CVE-2026-45457 HIGH PATCH Exploit Unlikely This Week

Local code execution in Microsoft Office Word is possible through an untrusted pointer dereference (CWE-125 out-of-bounds read) that an attacker can trigger by convincing a user to open a malicious document. The CVSS 7.8 vector (AV:L/AC:L/PR:N/UI:R) reflects high impact to confidentiality, integrity, and availability once the booby-trapped file is opened, though no public exploit identified at time of analysis and the issue is not listed in CISA KEV.

Information Disclosure Microsoft Buffer Overflow 365 Apps Microsoft 365 +2
NVD VulDB
CVSS 3.1
7.8
EPSS
0.1%
CVE-2026-45456 HIGH PATCH NEWS Exploit Unlikely This Week

Local code execution in Microsoft Office stems from a type confusion (CWE-843) flaw that allows an unauthenticated attacker with local access to run arbitrary code in the context of the Office process. The CVSS 8.4 score reflects high impact on confidentiality, integrity, and availability without requiring privileges or user interaction, though the attack vector is local. No public exploit is identified at time of analysis and the issue is not listed in CISA KEV.

Microsoft Authentication Bypass Memory Corruption 365 Apps Microsoft 365 +5
NVD VulDB
CVSS 3.1
8.4
EPSS
0.1%
CVE-2026-45455 MEDIUM PATCH Exploit Unlikely This Month

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 Microsoft Buffer Overflow 365 Apps Excel +5
NVD VulDB
CVSS 3.1
4.3
EPSS
0.1%
CVE-2026-44824 HIGH PATCH Exploit Unlikely This Week

Local code execution in Microsoft Office is possible through a heap-based buffer overflow (CWE-122) that triggers when a user opens or previews a maliciously crafted document. The CVSS 7.8 score reflects local attack vector with required user interaction, and no public exploit identified at time of analysis. Successful exploitation yields full confidentiality, integrity, and availability impact in the context of the current user.

Heap Overflow Microsoft Buffer Overflow 365 Apps Microsoft 365 +5
NVD VulDB
CVSS 3.1
7.8
EPSS
0.1%
CVE-2026-44823 HIGH PATCH Exploit Unlikely This Week

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.

Authentication Bypass Microsoft 365 Apps Excel Microsoft 365 +4
NVD VulDB
CVSS 3.1
7.8
EPSS
0.2%
CVE-2026-44822 HIGH PATCH This Week

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.

Information Disclosure Microsoft Buffer Overflow 365 Apps Excel +5
NVD VulDB
CVSS 3.1
8.2
EPSS
0.1%
CVE-2026-44821 MEDIUM PATCH Exploit Unlikely This Month

Out-of-bounds read in Microsoft Office triggers local information disclosure when a victim opens a crafted document, exposing adjacent memory contents with high confidentiality impact. The vulnerability spans a wide product surface including Office 2016 through LTSC 2024, Microsoft 365 Apps for Enterprise, multiple SharePoint Server versions, and Mac variants, as confirmed by EUVD-2026-35664. No public exploit or CISA KEV listing is identified at time of analysis; vendor-released patches are available across affected product lines.

Information Disclosure Microsoft Buffer Overflow 365 Apps Microsoft 365 +5
NVD VulDB
CVSS 3.1
5.5
EPSS
0.1%
CVE-2026-44820 HIGH PATCH Exploit Unlikely This Week

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.

Information Disclosure Microsoft Buffer Overflow 365 Apps Excel +5
NVD VulDB
CVSS 3.1
7.8
EPSS
0.1%
CVE-2026-44819 HIGH PATCH Exploit Unlikely This Week

Local code execution in Microsoft Office is possible when a user opens a maliciously crafted document that triggers a heap-based buffer overflow (CWE-122), allowing the attacker to run arbitrary code in the context of the opened Office process. The CVSS 7.8 (AV:L/AC:L/PR:N/UI:R) reflects a user-interaction-driven local exploit rather than a remote network attack, and no public exploit identified at time of analysis. The flaw was reported through Microsoft Security Response Center (secure@microsoft.com) and is tracked in MSRC's update guide.

Heap Overflow Microsoft Buffer Overflow 365 Apps Microsoft 365 +5
NVD VulDB
CVSS 3.1
7.8
EPSS
0.1%
CVE-2026-44818 HIGH PATCH Exploit Unlikely This Week

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.

Authentication Bypass Microsoft Race Condition 365 Apps Excel +5
NVD VulDB
CVSS 3.1
7.0
EPSS
0.0%
CVE-2026-44817 HIGH PATCH This Week

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.

Microsoft Authentication Bypass Memory Corruption 365 Apps Excel +5
NVD VulDB
CVSS 3.1
7.8
EPSS
0.1%
CVE-2026-26144 HIGH PATCH This Week

Information disclosure in Microsoft 365 Apps Excel allows unauthenticated remote attackers to extract sensitive data through stored cross-site scripting attacks in generated web content. The vulnerability requires no user interaction and affects all Excel users who process untrusted documents. No patch is currently available, leaving users dependent on mitigation strategies until Microsoft releases a fix.

Microsoft XSS 365 Apps
NVD VulDB
CVSS 3.1
7.5
EPSS
0.1%
CVE-2026-26113 HIGH PATCH This Week

Unsafe pointer dereference in Microsoft Office, SharePoint Server, and 365 Apps enables local code execution with high privileges on affected systems. An attacker with local access can exploit this memory safety flaw to achieve complete system compromise including data theft and modification. No patch is currently available, leaving users vulnerable until Microsoft releases a security update.

Microsoft Authentication Bypass Sharepoint Server Office Office Long Term Servicing Channel +1
NVD VulDB
CVSS 3.1
8.4
EPSS
0.0%
CVE-2026-26112 HIGH PATCH This Week

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.

Microsoft Authentication Bypass Office Online Server Excel Office +2
NVD VulDB
CVSS 3.1
7.8
EPSS
0.1%
CVE-2026-26109 HIGH PATCH This Week

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.

Microsoft Information Disclosure Buffer Overflow Office Online Server 365 Apps +3
NVD VulDB
CVSS 3.1
8.4
EPSS
0.0%
CVE-2026-26108 HIGH PATCH This Week

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.

Microsoft Buffer Overflow Heap Overflow Office Office Online Server +3
NVD
CVSS 3.1
7.8
EPSS
0.1%
CVE-2026-26107 HIGH PATCH This Week

Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally. [CVSS 7.8 HIGH]

Microsoft Use After Free Denial Of Service Memory Corruption Office Long Term Servicing Channel +4
NVD
CVSS 3.1
7.8
EPSS
0.1%
CVE-2026-21514 HIGH KEV PATCH THREAT Act Now

Microsoft Office Word contains a security decision bypass (CVE-2026-21514, CVSS 7.8) through reliance on untrusted inputs, allowing local attackers to bypass protections when opening malicious documents. KEV-listed, this vulnerability enables document-based attacks that circumvent Word's security features designed to protect users from malicious content.

Microsoft 365 Apps Office Long Term Servicing Channel
NVD VulDB
CVSS 3.1
7.8
EPSS
4.5%
CVE-2026-21511 HIGH PATCH This Week

Microsoft Outlook's unsafe deserialization of untrusted data enables remote attackers to spoof messages and identities without authentication over the network. This vulnerability affects Outlook, Word, and Microsoft 365 Apps, allowing attackers to impersonate legitimate senders and deceive users. No patch is currently available, making this a high-risk threat requiring immediate defensive measures.

Microsoft Outlook Deserialization 365 Apps Word +3
NVD
CVSS 3.1
7.5
EPSS
0.2%
CVE-2026-21261 MEDIUM PATCH This Month

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.

Microsoft Office Long Term Servicing Channel 365 Apps Office Online Server Office +1
NVD
CVSS 3.1
5.5
EPSS
0.0%
CVE-2026-21260 HIGH PATCH This Week

Information disclosure in Microsoft Outlook, SharePoint Server, Office, and 365 Apps enables remote attackers to conduct email spoofing attacks without authentication or user interaction. The vulnerability affects multiple Microsoft collaboration products and could allow threat actors to impersonate legitimate senders to compromise organizational security. No patch is currently available for this high-severity issue.

Microsoft Outlook Sharepoint Server Office 365 Apps +1
NVD
CVSS 3.1
7.5
EPSS
0.0%
CVE-2026-21259 HIGH PATCH This Week

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.

Microsoft Buffer Overflow Heap Overflow Office Long Term Servicing Channel 365 Apps +3
NVD
CVSS 3.1
7.8
EPSS
0.0%
CVE-2026-21258 MEDIUM PATCH This Month

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.

Microsoft Office 365 Apps Office Long Term Servicing Channel Excel +1
NVD
CVSS 3.1
5.5
EPSS
0.0%
CVE-2026-21509 HIGH KEV PATCH THREAT Act Now

Microsoft Office contains a security feature bypass (CVE-2026-21509, CVSS 7.8) where reliance on untrusted inputs in security decisions allows local attackers to bypass protections designed to prevent execution of malicious content. KEV-listed with EPSS 9.3%, this vulnerability enables attackers to circumvent Office security features like Protected View or macro restrictions through crafted documents.

Microsoft 365 Apps Office Office Long Term Servicing Channel Authentication Bypass
NVD VulDB
CVSS 3.1
7.8
EPSS
9.3%
CVE-2026-20957 HIGH PATCH This Week

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.

Microsoft Integer Overflow Office Long Term Servicing Channel Office Online Server Excel +2
NVD
CVSS 3.1
7.8
EPSS
0.1%
CVE-2026-20956 HIGH PATCH This Week

Memory corruption in Microsoft Excel within Office 365 Apps and Long Term Servicing Channel enables local code execution through a malicious file requiring user interaction. An attacker can achieve arbitrary code execution with full system privileges by exploiting improper pointer handling in the application. No patch is currently available, leaving affected systems vulnerable until Microsoft releases a fix.

Microsoft 365 Apps Office Long Term Servicing Channel
NVD
CVSS 3.1
7.8
EPSS
0.1%
CVE-2026-20955 HIGH PATCH This Week

Arbitrary code execution in Microsoft Excel through unsafe pointer handling enables local attackers to achieve full system compromise without requiring elevated privileges. This vulnerability affects Microsoft 365 Apps, Office, Office Online Server, and Office Long Term Servicing Channel across multiple versions. No patch is currently available, leaving affected systems vulnerable to exploitation via maliciously crafted spreadsheets.

Microsoft 365 Apps Office Office Online Server Office Long Term Servicing Channel
NVD
CVSS 3.1
7.8
EPSS
0.1%
CVE-2026-20953 HIGH PATCH This Week

Use after free in Microsoft Office allows an unauthorized attacker to execute code locally. [CVSS 8.4 HIGH]

Microsoft Use After Free 365 Apps Office Long Term Servicing Channel Office
NVD
CVSS 3.1
8.4
EPSS
0.0%
CVE-2026-20952 HIGH PATCH This Week

Use after free in Microsoft Office allows an unauthorized attacker to execute code locally. [CVSS 8.4 HIGH]

Microsoft Use After Free Office Long Term Servicing Channel Office 365 Apps
NVD
CVSS 3.1
8.4
EPSS
0.0%
CVE-2026-20950 HIGH PATCH This Week

Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally. [CVSS 7.8 HIGH]

Microsoft Use After Free Excel Office Online Server 365 Apps +2
NVD
CVSS 3.1
7.8
EPSS
0.0%
CVE-2026-20949 HIGH PATCH This Week

Microsoft Office Excel in the Long Term Servicing Channel and 365 Apps contains an access control bypass vulnerability that allows a local attacker with user interaction to gain unauthorized access to sensitive data and modify or delete system resources. The vulnerability requires local access and user interaction to exploit, affecting the confidentiality, integrity, and availability of affected systems. No patch is currently available.

Microsoft Office Long Term Servicing Channel 365 Apps
NVD
CVSS 3.1
7.8
EPSS
0.0%
CVE-2026-20948 HIGH PATCH This Week

Local code execution in Microsoft Office Word (including 365 Apps and SharePoint Server) results from unsafe pointer dereferencing that can be triggered by user interaction with a malicious document. An attacker with local access can exploit this vulnerability to execute arbitrary code with the privileges of the affected user. No patch is currently available for this vulnerability.

Microsoft Office Long Term Servicing Channel Sharepoint Server Word 365 Apps +1
NVD
CVSS 3.1
7.8
EPSS
0.0%
CVE-2026-20946 HIGH PATCH This Week

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 Office Long Term Servicing Channel 365 Apps Office Excel
NVD
CVSS 3.1
7.8
EPSS
0.0%
CVE-2026-20944 HIGH PATCH This Week

Microsoft Office Word contains an out-of-bounds read vulnerability that enables local code execution on affected systems. Users of Microsoft 365 Apps and Office Long Term Servicing Channel are at risk, as an attacker with local access can exploit this memory safety flaw to execute arbitrary code with full system privileges. No patch is currently available for this high-severity vulnerability.

Microsoft 365 Apps Office Long Term Servicing Channel
NVD
CVSS 3.1
8.4
EPSS
0.0%
CVE-2025-62557 HIGH This Week

Local code execution in Microsoft Office (365 Apps, Office 2016/2019, and Office LTSC 2021 across Windows, macOS, and Android) stems from a use-after-free memory corruption flaw tracked as CVE-2025-62557. An attacker who entices a user to open a crafted document can achieve arbitrary code execution with the privileges of the current user, with no public exploit identified at time of analysis. The CVSS 8.4 rating reflects high impact across confidentiality, integrity, and availability despite the local attack vector.

Memory Corruption Microsoft Denial Of Service Use After Free 365 Apps +2
NVD
CVSS 3.1
8.4
EPSS
0.1%
CVE-2025-62554 HIGH This Week

Local code execution in Microsoft Office (365 Apps, Office 2016/2019, Office LTSC 2021, and Office for Android/macOS) stems from a type confusion flaw (CWE-843) that lets an attacker run arbitrary code in the context of the current user. Despite PR:N/UI:N in the CVSS vector, the AV:L attack vector means the attacker must deliver a malicious document to be opened on the target host. No public exploit has been identified at time of analysis and the CVE is not on the CISA KEV list.

Memory Corruption Microsoft Authentication Bypass 365 Apps Office +1
NVD
CVSS 3.1
8.4
EPSS
0.1%
CVE-2025-62216 HIGH This Month

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.

Memory Corruption Denial Of Service Microsoft Use After Free 365 Apps +1
NVD
CVSS 3.1
7.8
EPSS
0.1%
CVE-2025-62205 HIGH This Month

Use after free in Microsoft Office Word 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.

Memory Corruption Denial Of Service Microsoft Use After Free 365 Apps +1
NVD
CVSS 3.1
7.8
EPSS
0.1%
CVE-2025-62203 HIGH This Month

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.

Memory Corruption Denial Of Service Microsoft Use After Free 365 Apps +4
NVD
CVSS 3.1
7.8
EPSS
0.1%
CVE-2025-62202 HIGH This Month

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.

Buffer Overflow Microsoft Information Disclosure 365 Apps Excel +3
NVD
CVSS 3.1
7.1
EPSS
0.1%
CVE-2025-62201 HIGH This Month

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.

Buffer Overflow Microsoft Heap Overflow 365 Apps Excel +3
NVD
CVSS 3.1
7.8
EPSS
0.1%
CVE-2025-62200 HIGH This Month

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.

Microsoft Authentication Bypass 365 Apps Excel Office +2
NVD
CVSS 3.1
7.8
EPSS
0.1%
CVE-2025-62199 HIGH This Month

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.

Memory Corruption Denial Of Service Microsoft Use After Free 365 Apps +3
NVD
CVSS 3.1
7.8
EPSS
0.9%
CVE-2025-60728 MEDIUM Monitor

Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Buffer Overflow Microsoft Information Disclosure 365 Apps Office Long Term Servicing Channel
NVD
CVSS 3.1
4.3
EPSS
0.1%
CVE-2025-60727 HIGH This Month

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 Overflow Microsoft Information Disclosure 365 Apps Excel +3
NVD
CVSS 3.1
7.8
EPSS
0.1%
CVE-2025-60726 HIGH This Month

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.

Buffer Overflow Microsoft Information Disclosure 365 Apps Excel +3
NVD
CVSS 3.1
7.1
EPSS
0.1%
CVE-2025-59240 MEDIUM This Month

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.

Information Disclosure Microsoft 365 Apps Excel Office +1
NVD
CVSS 3.1
5.5
EPSS
0.1%
CVE-2025-59234 HIGH This Week

Local code execution in Microsoft Office (including 365 Apps Enterprise, Office 2016/2019, and Office LTSC 2021 across Windows, macOS, and Android) is possible when a victim opens a maliciously crafted document that triggers a use-after-free condition. An unauthorized attacker who convinces a user to open the file can execute arbitrary code in the context of the current user, with no public exploit identified at time of analysis. CVSS is 7.8 reflecting local attack vector with required user interaction but full confidentiality, integrity, and availability impact.

Memory Corruption Microsoft Denial Of Service Use After Free 365 Apps +2
NVD
CVSS 3.1
7.8
EPSS
0.1%
CVE-2025-59227 HIGH This Week

Local code execution in Microsoft Office (including Microsoft 365 Apps Enterprise, Office 2016/2019, and Office LTSC 2021 across Windows x86/x64, macOS, and Android) arises from a use-after-free memory corruption (CWE-416) that an attacker can trigger by convincing a user to open a crafted document. Exploitation runs in the context of the current user with high impact on confidentiality, integrity, and availability. No public exploit identified at time of analysis and the issue is not currently listed in CISA KEV.

Memory Corruption Microsoft Denial Of Service Use After Free 365 Apps +2
NVD
CVSS 3.1
7.8
EPSS
0.1%
CVE-2025-54910 HIGH This Month

Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 8.4), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Heap Overflow Buffer Overflow Microsoft 365 Apps Office +1
NVD
CVSS 3.1
8.4
EPSS
0.1%
CVE-2025-54908 HIGH This Month

Use after free in Microsoft Office PowerPoint 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.

Memory Corruption Denial Of Service Use After Free Microsoft 365 Apps +3
NVD
CVSS 3.1
7.8
EPSS
0.1%
CVE-2025-54907 HIGH This Month

Heap-based buffer overflow in Microsoft Office Visio 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 Overflow Buffer Overflow Microsoft 365 Apps Office +1
NVD
CVSS 3.1
7.8
EPSS
0.1%
CVE-2025-54906 HIGH This Month

Free of memory not on the heap 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.

Memory Corruption Use After Free Microsoft Authentication Bypass 365 Apps +3
NVD
CVSS 3.1
7.8
EPSS
0.1%
CVE-2025-54905 HIGH This Month

Untrusted pointer dereference in Microsoft Office Word 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.

Microsoft Information Disclosure 365 Apps Office Office Long Term Servicing Channel +3
NVD
CVSS 3.1
7.1
EPSS
0.1%
CVE-2025-54904 HIGH This Month

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.

Memory Corruption Denial Of Service Use After Free Microsoft 365 Apps +4
NVD
CVSS 3.1
7.8
EPSS
0.1%
CVE-2025-54903 HIGH This Month

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.

Memory Corruption Denial Of Service Use After Free Microsoft 365 Apps +4
NVD
CVSS 3.1
7.8
EPSS
0.1%
CVE-2025-54902 HIGH This Month

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 Overflow Microsoft Information Disclosure 365 Apps Excel +3
NVD
CVSS 3.1
7.8
EPSS
0.1%
CVE-2025-54901 MEDIUM This Month

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.

Buffer Overflow Microsoft 365 Apps Excel Office +1
NVD
CVSS 3.1
5.5
EPSS
0.1%
CVE-2025-54900 HIGH This Month

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.

Heap Overflow Buffer Overflow Microsoft 365 Apps Excel +3
NVD
CVSS 3.1
7.8
EPSS
0.1%
CVE-2025-54899 HIGH This Month

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.

Authentication Bypass Microsoft 365 Apps Excel Office +1
NVD
CVSS 3.1
7.8
EPSS
0.1%
CVE-2025-54898 HIGH This Month

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 Overflow Microsoft Information Disclosure 365 Apps Excel +3
NVD
CVSS 3.1
7.8
EPSS
0.1%
CVE-2025-54896 HIGH This Month

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.

Memory Corruption Denial Of Service Use After Free Microsoft 365 Apps +4
NVD
CVSS 3.1
7.8
EPSS
0.1%
CVE-2025-53784 HIGH CERT-EU This Week

Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 8.4), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Memory Corruption Denial Of Service Use After Free Microsoft 365 Apps +1
NVD
CVSS 3.1
8.4
EPSS
0.1%
CVE-2025-53761 HIGH This Month

Use after free in Microsoft Office PowerPoint 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.

Memory Corruption Denial Of Service Use After Free Microsoft 365 Apps +3
NVD
CVSS 3.1
7.8
EPSS
0.1%
CVE-2025-53759 HIGH This Month

Use of uninitialized resource 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.

Authentication Bypass Microsoft 365 Apps Office Office Long Term Servicing Channel +1
NVD
CVSS 3.1
7.8
EPSS
0.2%
CVE-2025-53741 HIGH This Month

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.

Heap Overflow Buffer Overflow Microsoft 365 Apps Excel +3
NVD
CVSS 3.1
7.8
EPSS
0.1%
CVE-2025-53740 HIGH CERT-EU This Month

Use after free in Microsoft Office allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 8.4), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Memory Corruption Denial Of Service Use After Free Microsoft 365 Apps +2
NVD
CVSS 3.1
8.4
EPSS
0.1%
CVE-2025-53739 HIGH This Month

Access of resource using incompatible type ('type confusion') 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.

Memory Corruption Authentication Bypass Microsoft 365 Apps Excel +3
NVD
CVSS 3.1
7.8
EPSS
0.2%
CVE-2025-53738 HIGH This Month

Use after free in Microsoft Office Word 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.

Memory Corruption Denial Of Service Use After Free Microsoft 365 Apps +3
NVD
CVSS 3.1
7.8
EPSS
0.1%
CVE-2025-53737 HIGH This Month

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.

Heap Overflow Buffer Overflow Microsoft 365 Apps Excel +3
NVD
CVSS 3.1
7.8
EPSS
0.1%
CVE-2025-53736 MEDIUM This Month

Buffer over-read in Microsoft Office Word allows an unauthorized attacker to disclose information locally. Rated medium severity (CVSS 6.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Buffer Overflow Microsoft 365 Apps Office Office Long Term Servicing Channel +3
NVD
CVSS 3.1
6.8
EPSS
0.1%
CVE-2025-53735 HIGH This Month

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.

Memory Corruption Denial Of Service Use After Free Microsoft 365 Apps +4
NVD
CVSS 3.1
7.8
EPSS
0.1%
CVE-2025-53734 HIGH This Month

Use after free in Microsoft Office Visio 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.

Memory Corruption Denial Of Service Use After Free Microsoft 365 Apps +2
NVD
CVSS 3.1
7.8
EPSS
0.1%
CVE-2025-53733 HIGH CERT-EU This Month

Incorrect conversion between numeric types in Microsoft Office Word allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 8.4), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Authentication Bypass Microsoft 365 Apps Office Office Long Term Servicing Channel +3
NVD
CVSS 3.1
8.4
EPSS
0.2%
EPSS 0% CVSS 7.0
HIGH PATCH Exploit Unlikely This Week

Local privilege escalation in Microsoft Office Click-To-Run stems from a use-after-free condition (CWE-416) that lets an authorized low-privilege user elevate to higher privileges on the host. The flaw, reported by Microsoft's MSRC, carries a CVSS 7.0 (AV:L/AC:H/PR:L) reflecting that exploitation requires local access, low privileges, and a successful race-window or memory-state condition. No public exploit identified at time of analysis, and the vulnerability is not currently listed in CISA KEV.

Microsoft Use After Free Memory Corruption +5
NVD VulDB
EPSS 0% CVSS 7.8
HIGH PATCH Exploit Unlikely This Week

Local code execution in Microsoft Office is possible through a heap-based buffer overflow (CWE-822) that triggers when a user opens a maliciously crafted document. The CVSS 7.8 vector (AV:L/AC:L/PR:N/UI:R) reflects a classic client-side file-format attack requiring user interaction but no prior authentication, yielding full confidentiality, integrity, and availability impact on the targeted workstation. There is no public exploit identified at time of analysis and the CVE is not listed in CISA KEV, but Office document parsers are historically high-value targets and the vulnerability was reported by Microsoft's own MSRC team.

Microsoft Buffer Overflow 365 Apps +5
NVD VulDB
EPSS 0% CVSS 7.8
HIGH PATCH Exploit Unlikely This Week

Local code execution in Microsoft Office Word arises from an untrusted pointer dereference (CWE-822) that can be triggered when a victim opens a crafted document. Successful exploitation grants the attacker the privileges of the current user with high impact to confidentiality, integrity, and availability, though no public exploit identified at time of analysis. The CVSS 3.1 base score of 7.8 reflects the requirement for user interaction but no prior authentication.

Authentication Bypass Microsoft 365 Apps +3
NVD VulDB
EPSS 0% CVSS 7.8
HIGH PATCH Exploit Unlikely This Week

Local code execution in Microsoft Office Word is possible when a user opens a maliciously crafted document that triggers an untrusted pointer dereference (CWE-416 use-after-free). The flaw lets an unauthorized attacker execute arbitrary code in the context of the current user, and no public exploit identified at time of analysis. Risk hinges on user interaction (UI:R), making phishing-style document delivery the realistic attack pathway.

Microsoft Authentication Bypass Use After Free +5
NVD VulDB
EPSS 0% CVSS 3.3
LOW PATCH Exploit Unlikely Monitor

Out-of-bounds read in Microsoft Office and SharePoint Server exposes low-level memory contents to a local attacker when a victim opens a crafted document. Affected products span Microsoft 365 Apps for Enterprise, Office 2016/2019/LTSC 2021/2024, Office for Mac variants, and SharePoint Server 2016/2019/Subscription Edition - all at version 16.0.x baselines. The CVSS score of 3.3 (Low) reflects constrained impact: confidentiality is only partially affected, integrity and availability are untouched, and exploitation requires both local access and user interaction. No public exploit identified at time of analysis, and the vulnerability is not listed in the CISA KEV catalog.

Information Disclosure Microsoft Buffer Overflow +7
NVD VulDB
EPSS 0% CVSS 7.8
HIGH PATCH Exploit Unlikely This Week

Local code execution in Microsoft Office is possible through a heap-based buffer overflow (CWE-122) that an unauthenticated attacker can trigger when a user opens a crafted document. The CVSS 3.1 base score of 7.8 reflects high impact to confidentiality, integrity, and availability, with required user interaction limiting mass exploitation. There is no public exploit identified at time of analysis and the issue is not currently listed on the CISA KEV catalog.

Heap Overflow Microsoft Buffer Overflow +7
NVD VulDB
EPSS 0% CVSS 8.4
HIGH PATCH Exploit Unlikely This Week

Local code execution in Microsoft Office is possible through a heap-based buffer overflow that an unauthorized attacker can trigger without user interaction. The flaw carries a CVSS 3.1 score of 8.4 with high impact across confidentiality, integrity, and availability, and no public exploit identified at time of analysis. Despite requiring local access, the absence of authentication and user-interaction requirements makes this a notable priority for endpoint patching cycles.

Microsoft Use After Free Memory Corruption +8
NVD VulDB
EPSS 0% CVSS 8.4
HIGH PATCH Exploit Unlikely This Week

Local code execution in Microsoft Office via a heap-based buffer overflow allows an unauthorized attacker to run arbitrary code with the privileges of the user opening a malicious document. The CVSS vector (AV:L/PR:N/UI:N) indicates local attack vector without required authentication or user interaction, an unusual combination that warrants verification against the vendor advisory. No public exploit identified at time of analysis and the issue is not currently listed in CISA KEV.

Microsoft Use After Free Memory Corruption +8
NVD VulDB
EPSS 0% CVSS 7.8
HIGH PATCH Exploit Unlikely This Week

Local code execution in Microsoft Office Word enables an attacker to run arbitrary code in the context of the current user by tricking them into opening a malicious document that triggers an untrusted pointer dereference. With a CVSS 7.8 score and no public exploit identified at time of analysis, the flaw is exploited locally but unauthenticated, relying on user interaction to open a crafted file. Microsoft has issued an advisory via the MSRC Security Update Guide.

Authentication Bypass Microsoft 365 Apps +6
NVD VulDB
EPSS 0% CVSS 7.8
HIGH PATCH Exploit Unlikely This Week

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.

Heap Overflow Microsoft Buffer Overflow +7
NVD VulDB
EPSS 0% CVSS 3.3
LOW PATCH Monitor

Heap-based buffer overflow in Microsoft Office Word exposes limited local memory contents when a user opens a specially crafted document. Affecting multiple Office product lines including Microsoft 365 Apps for Enterprise, Office LTSC 2021, LTSC 2024, and their Mac counterparts, the vulnerability carries a CVSS score of 3.3 (Low) and is constrained to confidentiality impact only, with no integrity or availability consequences. No public exploit code has been identified at time of analysis, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.

Heap Overflow Microsoft Buffer Overflow +4
NVD VulDB
EPSS 0% CVSS 8.4
HIGH PATCH Exploit Unlikely This Week

Local code execution in Microsoft Office is possible via a heap-based buffer overflow that an unauthorized attacker can trigger without user interaction, yielding full confidentiality, integrity, and availability impact on the host. The flaw is rated 8.4 (CVSS:3.1) and was disclosed by Microsoft's Security Response Center, but no public exploit has been identified at the time of analysis. Despite the CWE-121 tagging as a stack overflow, the description and CWE-122 class indicate the corruption occurs on the heap, so defenders should treat this as a memory-corruption RCE-class issue requiring prompt patching.

Microsoft Stack Overflow Buffer Overflow +7
NVD VulDB
EPSS 0% CVSS 8.4
HIGH PATCH Exploit Unlikely This Week

Local code execution in Microsoft Office via a heap-based buffer overflow that lets an unauthorized attacker run arbitrary code in the context of the current user. The flaw carries a CVSS 8.4 rating driven by high impact across confidentiality, integrity, and availability, and no public exploit identified at time of analysis. Despite the 'unauthorized' wording, the CVSS vector specifies a local attack vector, indicating the attacker must already be able to deliver a crafted file or run code on the target system.

Microsoft Use After Free Memory Corruption +8
NVD VulDB
EPSS 0% CVSS 4.7
MEDIUM PATCH This Month

Out-of-bounds read (buffer over-read) in Microsoft Office exposes sensitive memory contents to a local attacker who can induce a user to open a specially crafted file. Affecting a broad surface including Microsoft 365 Apps for Enterprise, Office LTSC 2021/2024, Office 2019, and mobile/Mac variants, the vulnerability carries a CVSS 4.7 (Medium) with high confidentiality impact but no integrity or availability consequence. No public exploit identified at time of analysis and the vulnerability is not listed in CISA KEV, but the wide deployment footprint of Microsoft Office makes even targeted information disclosure attacks operationally significant.

Microsoft Buffer Overflow 365 Apps +5
NVD VulDB
EPSS 0% CVSS 3.3
LOW PATCH Exploit Unlikely Monitor

Excel across multiple Microsoft Office product lines fails to properly enforce an internal protection mechanism, enabling a local attacker to bypass a security feature and access limited confidential data within the process context. Affected builds span Microsoft 365 Apps for Enterprise, Office LTSC 2024, and Mac variants of Office. With a CVSS score of 3.3, this is a low-severity finding - no public exploit has been identified at time of analysis, and exploitation requires both local system access and deliberate user interaction.

Authentication Bypass Microsoft 365 Apps +3
NVD VulDB
EPSS 0% CVSS 8.4
HIGH PATCH Exploit Unlikely This Week

Local code execution in Microsoft Office via a type confusion flaw (CWE-416) permits unauthorized attackers to run arbitrary code in the context of the Office process without requiring privileges or user interaction. The issue carries a high CVSS 3.1 score of 8.4 with full impact across confidentiality, integrity, and availability, though exploitation requires local attack vector access to the target system. No public exploit identified at time of analysis, and the vulnerability is not currently listed in CISA KEV.

Microsoft Authentication Bypass Use After Free +8
NVD VulDB
EPSS 0% CVSS 7.8
HIGH PATCH Exploit Unlikely This Week

Local code execution in Microsoft Office Word is possible through an untrusted pointer dereference (CWE-125 out-of-bounds read) that an attacker can trigger by convincing a user to open a malicious document. The CVSS 7.8 vector (AV:L/AC:L/PR:N/UI:R) reflects high impact to confidentiality, integrity, and availability once the booby-trapped file is opened, though no public exploit identified at time of analysis and the issue is not listed in CISA KEV.

Information Disclosure Microsoft Buffer Overflow +4
NVD VulDB
EPSS 0% CVSS 8.4
HIGH PATCH Exploit Unlikely This Week

Local code execution in Microsoft Office stems from a type confusion (CWE-843) flaw that allows an unauthenticated attacker with local access to run arbitrary code in the context of the Office process. The CVSS 8.4 score reflects high impact on confidentiality, integrity, and availability without requiring privileges or user interaction, though the attack vector is local. No public exploit is identified at time of analysis and the issue is not listed in CISA KEV.

Microsoft Authentication Bypass Memory Corruption +7
NVD VulDB
EPSS 0% CVSS 4.3
MEDIUM PATCH Exploit Unlikely This Month

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 Microsoft Buffer Overflow +7
NVD VulDB
EPSS 0% CVSS 7.8
HIGH PATCH Exploit Unlikely This Week

Local code execution in Microsoft Office is possible through a heap-based buffer overflow (CWE-122) that triggers when a user opens or previews a maliciously crafted document. The CVSS 7.8 score reflects local attack vector with required user interaction, and no public exploit identified at time of analysis. Successful exploitation yields full confidentiality, integrity, and availability impact in the context of the current user.

Heap Overflow Microsoft Buffer Overflow +7
NVD VulDB
EPSS 0% CVSS 7.8
HIGH PATCH Exploit Unlikely This Week

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.

Authentication Bypass Microsoft 365 Apps +6
NVD VulDB
EPSS 0% CVSS 8.2
HIGH PATCH This Week

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.

Information Disclosure Microsoft Buffer Overflow +7
NVD VulDB
EPSS 0% CVSS 5.5
MEDIUM PATCH Exploit Unlikely This Month

Out-of-bounds read in Microsoft Office triggers local information disclosure when a victim opens a crafted document, exposing adjacent memory contents with high confidentiality impact. The vulnerability spans a wide product surface including Office 2016 through LTSC 2024, Microsoft 365 Apps for Enterprise, multiple SharePoint Server versions, and Mac variants, as confirmed by EUVD-2026-35664. No public exploit or CISA KEV listing is identified at time of analysis; vendor-released patches are available across affected product lines.

Information Disclosure Microsoft Buffer Overflow +7
NVD VulDB
EPSS 0% CVSS 7.8
HIGH PATCH Exploit Unlikely This Week

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.

Information Disclosure Microsoft Buffer Overflow +7
NVD VulDB
EPSS 0% CVSS 7.8
HIGH PATCH Exploit Unlikely This Week

Local code execution in Microsoft Office is possible when a user opens a maliciously crafted document that triggers a heap-based buffer overflow (CWE-122), allowing the attacker to run arbitrary code in the context of the opened Office process. The CVSS 7.8 (AV:L/AC:L/PR:N/UI:R) reflects a user-interaction-driven local exploit rather than a remote network attack, and no public exploit identified at time of analysis. The flaw was reported through Microsoft Security Response Center (secure@microsoft.com) and is tracked in MSRC's update guide.

Heap Overflow Microsoft Buffer Overflow +7
NVD VulDB
EPSS 0% CVSS 7.0
HIGH PATCH Exploit Unlikely This Week

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.

Authentication Bypass Microsoft Race Condition +7
NVD VulDB
EPSS 0% CVSS 7.8
HIGH PATCH This Week

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.

Microsoft Authentication Bypass Memory Corruption +7
NVD VulDB
EPSS 0% CVSS 7.5
HIGH PATCH This Week

Information disclosure in Microsoft 365 Apps Excel allows unauthenticated remote attackers to extract sensitive data through stored cross-site scripting attacks in generated web content. The vulnerability requires no user interaction and affects all Excel users who process untrusted documents. No patch is currently available, leaving users dependent on mitigation strategies until Microsoft releases a fix.

Microsoft XSS 365 Apps
NVD VulDB
EPSS 0% CVSS 8.4
HIGH PATCH This Week

Unsafe pointer dereference in Microsoft Office, SharePoint Server, and 365 Apps enables local code execution with high privileges on affected systems. An attacker with local access can exploit this memory safety flaw to achieve complete system compromise including data theft and modification. No patch is currently available, leaving users vulnerable until Microsoft releases a security update.

Microsoft Authentication Bypass Sharepoint Server +3
NVD VulDB
EPSS 0% CVSS 7.8
HIGH PATCH This Week

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.

Microsoft Authentication Bypass Office Online Server +4
NVD VulDB
EPSS 0% CVSS 8.4
HIGH PATCH This Week

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.

Microsoft Information Disclosure Buffer Overflow +5
NVD VulDB
EPSS 0% CVSS 7.8
HIGH PATCH This Week

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.

Microsoft Buffer Overflow Heap Overflow +5
NVD
EPSS 0% CVSS 7.8
HIGH PATCH This Week

Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally. [CVSS 7.8 HIGH]

Microsoft Use After Free Denial Of Service +6
NVD
EPSS 4% CVSS 7.8
HIGH KEV PATCH THREAT Act Now

Microsoft Office Word contains a security decision bypass (CVE-2026-21514, CVSS 7.8) through reliance on untrusted inputs, allowing local attackers to bypass protections when opening malicious documents. KEV-listed, this vulnerability enables document-based attacks that circumvent Word's security features designed to protect users from malicious content.

Microsoft 365 Apps Office Long Term Servicing Channel
NVD VulDB
EPSS 0% CVSS 7.5
HIGH PATCH This Week

Microsoft Outlook's unsafe deserialization of untrusted data enables remote attackers to spoof messages and identities without authentication over the network. This vulnerability affects Outlook, Word, and Microsoft 365 Apps, allowing attackers to impersonate legitimate senders and deceive users. No patch is currently available, making this a high-risk threat requiring immediate defensive measures.

Microsoft Outlook Deserialization +5
NVD
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

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.

Microsoft Office Long Term Servicing Channel 365 Apps +3
NVD
EPSS 0% CVSS 7.5
HIGH PATCH This Week

Information disclosure in Microsoft Outlook, SharePoint Server, Office, and 365 Apps enables remote attackers to conduct email spoofing attacks without authentication or user interaction. The vulnerability affects multiple Microsoft collaboration products and could allow threat actors to impersonate legitimate senders to compromise organizational security. No patch is currently available for this high-severity issue.

Microsoft Outlook Sharepoint Server +3
NVD
EPSS 0% CVSS 7.8
HIGH PATCH This Week

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.

Microsoft Buffer Overflow Heap Overflow +5
NVD
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

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.

Microsoft Office 365 Apps +3
NVD
EPSS 9% CVSS 7.8
HIGH KEV PATCH THREAT Act Now

Microsoft Office contains a security feature bypass (CVE-2026-21509, CVSS 7.8) where reliance on untrusted inputs in security decisions allows local attackers to bypass protections designed to prevent execution of malicious content. KEV-listed with EPSS 9.3%, this vulnerability enables attackers to circumvent Office security features like Protected View or macro restrictions through crafted documents.

Microsoft 365 Apps Office +2
NVD VulDB
EPSS 0% CVSS 7.8
HIGH PATCH This Week

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.

Microsoft Integer Overflow Office Long Term Servicing Channel +4
NVD
EPSS 0% CVSS 7.8
HIGH PATCH This Week

Memory corruption in Microsoft Excel within Office 365 Apps and Long Term Servicing Channel enables local code execution through a malicious file requiring user interaction. An attacker can achieve arbitrary code execution with full system privileges by exploiting improper pointer handling in the application. No patch is currently available, leaving affected systems vulnerable until Microsoft releases a fix.

Microsoft 365 Apps Office Long Term Servicing Channel
NVD
EPSS 0% CVSS 7.8
HIGH PATCH This Week

Arbitrary code execution in Microsoft Excel through unsafe pointer handling enables local attackers to achieve full system compromise without requiring elevated privileges. This vulnerability affects Microsoft 365 Apps, Office, Office Online Server, and Office Long Term Servicing Channel across multiple versions. No patch is currently available, leaving affected systems vulnerable to exploitation via maliciously crafted spreadsheets.

Microsoft 365 Apps Office +2
NVD
EPSS 0% CVSS 8.4
HIGH PATCH This Week

Use after free in Microsoft Office allows an unauthorized attacker to execute code locally. [CVSS 8.4 HIGH]

Microsoft Use After Free 365 Apps +2
NVD
EPSS 0% CVSS 8.4
HIGH PATCH This Week

Use after free in Microsoft Office allows an unauthorized attacker to execute code locally. [CVSS 8.4 HIGH]

Microsoft Use After Free Office Long Term Servicing Channel +2
NVD
EPSS 0% CVSS 7.8
HIGH PATCH This Week

Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally. [CVSS 7.8 HIGH]

Microsoft Use After Free Excel +4
NVD
EPSS 0% CVSS 7.8
HIGH PATCH This Week

Microsoft Office Excel in the Long Term Servicing Channel and 365 Apps contains an access control bypass vulnerability that allows a local attacker with user interaction to gain unauthorized access to sensitive data and modify or delete system resources. The vulnerability requires local access and user interaction to exploit, affecting the confidentiality, integrity, and availability of affected systems. No patch is currently available.

Microsoft Office Long Term Servicing Channel 365 Apps
NVD
EPSS 0% CVSS 7.8
HIGH PATCH This Week

Local code execution in Microsoft Office Word (including 365 Apps and SharePoint Server) results from unsafe pointer dereferencing that can be triggered by user interaction with a malicious document. An attacker with local access can exploit this vulnerability to execute arbitrary code with the privileges of the affected user. No patch is currently available for this vulnerability.

Microsoft Office Long Term Servicing Channel Sharepoint Server +3
NVD
EPSS 0% CVSS 7.8
HIGH PATCH This Week

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 Office Long Term Servicing Channel 365 Apps +2
NVD
EPSS 0% CVSS 8.4
HIGH PATCH This Week

Microsoft Office Word contains an out-of-bounds read vulnerability that enables local code execution on affected systems. Users of Microsoft 365 Apps and Office Long Term Servicing Channel are at risk, as an attacker with local access can exploit this memory safety flaw to execute arbitrary code with full system privileges. No patch is currently available for this high-severity vulnerability.

Microsoft 365 Apps Office Long Term Servicing Channel
NVD
EPSS 0% CVSS 8.4
HIGH This Week

Local code execution in Microsoft Office (365 Apps, Office 2016/2019, and Office LTSC 2021 across Windows, macOS, and Android) stems from a use-after-free memory corruption flaw tracked as CVE-2025-62557. An attacker who entices a user to open a crafted document can achieve arbitrary code execution with the privileges of the current user, with no public exploit identified at time of analysis. The CVSS 8.4 rating reflects high impact across confidentiality, integrity, and availability despite the local attack vector.

Memory Corruption Microsoft Denial Of Service +4
NVD
EPSS 0% CVSS 8.4
HIGH This Week

Local code execution in Microsoft Office (365 Apps, Office 2016/2019, Office LTSC 2021, and Office for Android/macOS) stems from a type confusion flaw (CWE-843) that lets an attacker run arbitrary code in the context of the current user. Despite PR:N/UI:N in the CVSS vector, the AV:L attack vector means the attacker must deliver a malicious document to be opened on the target host. No public exploit has been identified at time of analysis and the CVE is not on the CISA KEV list.

Memory Corruption Microsoft Authentication Bypass +3
NVD
EPSS 0% CVSS 7.8
HIGH This Month

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.

Memory Corruption Denial Of Service Microsoft +3
NVD
EPSS 0% CVSS 7.8
HIGH This Month

Use after free in Microsoft Office Word 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.

Memory Corruption Denial Of Service Microsoft +3
NVD
EPSS 0% CVSS 7.8
HIGH This Month

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.

Memory Corruption Denial Of Service Microsoft +6
NVD
EPSS 0% CVSS 7.1
HIGH This Month

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.

Buffer Overflow Microsoft Information Disclosure +5
NVD
EPSS 0% CVSS 7.8
HIGH This Month

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.

Buffer Overflow Microsoft Heap Overflow +5
NVD
EPSS 0% CVSS 7.8
HIGH This Month

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.

Microsoft Authentication Bypass 365 Apps +4
NVD
EPSS 1% CVSS 7.8
HIGH This Month

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.

Memory Corruption Denial Of Service Microsoft +5
NVD
EPSS 0% CVSS 4.3
MEDIUM Monitor

Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Buffer Overflow Microsoft Information Disclosure +2
NVD
EPSS 0% CVSS 7.8
HIGH This Month

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 Overflow Microsoft Information Disclosure +5
NVD
EPSS 0% CVSS 7.1
HIGH This Month

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.

Buffer Overflow Microsoft Information Disclosure +5
NVD
EPSS 0% CVSS 5.5
MEDIUM This Month

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.

Information Disclosure Microsoft 365 Apps +3
NVD
EPSS 0% CVSS 7.8
HIGH This Week

Local code execution in Microsoft Office (including 365 Apps Enterprise, Office 2016/2019, and Office LTSC 2021 across Windows, macOS, and Android) is possible when a victim opens a maliciously crafted document that triggers a use-after-free condition. An unauthorized attacker who convinces a user to open the file can execute arbitrary code in the context of the current user, with no public exploit identified at time of analysis. CVSS is 7.8 reflecting local attack vector with required user interaction but full confidentiality, integrity, and availability impact.

Memory Corruption Microsoft Denial Of Service +4
NVD
EPSS 0% CVSS 7.8
HIGH This Week

Local code execution in Microsoft Office (including Microsoft 365 Apps Enterprise, Office 2016/2019, and Office LTSC 2021 across Windows x86/x64, macOS, and Android) arises from a use-after-free memory corruption (CWE-416) that an attacker can trigger by convincing a user to open a crafted document. Exploitation runs in the context of the current user with high impact on confidentiality, integrity, and availability. No public exploit identified at time of analysis and the issue is not currently listed in CISA KEV.

Memory Corruption Microsoft Denial Of Service +4
NVD
EPSS 0% CVSS 8.4
HIGH This Month

Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 8.4), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Heap Overflow Buffer Overflow Microsoft +3
NVD
EPSS 0% CVSS 7.8
HIGH This Month

Use after free in Microsoft Office PowerPoint 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.

Memory Corruption Denial Of Service Use After Free +5
NVD
EPSS 0% CVSS 7.8
HIGH This Month

Heap-based buffer overflow in Microsoft Office Visio 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 Overflow Buffer Overflow Microsoft +3
NVD
EPSS 0% CVSS 7.8
HIGH This Month

Free of memory not on the heap 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.

Memory Corruption Use After Free Microsoft +5
NVD
EPSS 0% CVSS 7.1
HIGH This Month

Untrusted pointer dereference in Microsoft Office Word 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.

Microsoft Information Disclosure 365 Apps +5
NVD
EPSS 0% CVSS 7.8
HIGH This Month

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.

Memory Corruption Denial Of Service Use After Free +6
NVD
EPSS 0% CVSS 7.8
HIGH This Month

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.

Memory Corruption Denial Of Service Use After Free +6
NVD
EPSS 0% CVSS 7.8
HIGH This Month

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 Overflow Microsoft Information Disclosure +5
NVD
EPSS 0% CVSS 5.5
MEDIUM This Month

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.

Buffer Overflow Microsoft 365 Apps +3
NVD
EPSS 0% CVSS 7.8
HIGH This Month

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.

Heap Overflow Buffer Overflow Microsoft +5
NVD
EPSS 0% CVSS 7.8
HIGH This Month

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.

Authentication Bypass Microsoft 365 Apps +3
NVD
EPSS 0% CVSS 7.8
HIGH This Month

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 Overflow Microsoft Information Disclosure +5
NVD
EPSS 0% CVSS 7.8
HIGH This Month

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.

Memory Corruption Denial Of Service Use After Free +6
NVD
EPSS 0% CVSS 8.4
HIGH This Week

Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 8.4), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Memory Corruption Denial Of Service Use After Free +3
NVD
EPSS 0% CVSS 7.8
HIGH This Month

Use after free in Microsoft Office PowerPoint 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.

Memory Corruption Denial Of Service Use After Free +5
NVD
EPSS 0% CVSS 7.8
HIGH This Month

Use of uninitialized resource 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.

Authentication Bypass Microsoft 365 Apps +3
NVD
EPSS 0% CVSS 7.8
HIGH This Month

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.

Heap Overflow Buffer Overflow Microsoft +5
NVD
EPSS 0% CVSS 8.4
HIGH This Month

Use after free in Microsoft Office allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 8.4), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Memory Corruption Denial Of Service Use After Free +4
NVD
EPSS 0% CVSS 7.8
HIGH This Month

Access of resource using incompatible type ('type confusion') 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.

Memory Corruption Authentication Bypass Microsoft +5
NVD
EPSS 0% CVSS 7.8
HIGH This Month

Use after free in Microsoft Office Word 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.

Memory Corruption Denial Of Service Use After Free +5
NVD
EPSS 0% CVSS 7.8
HIGH This Month

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.

Heap Overflow Buffer Overflow Microsoft +5
NVD
EPSS 0% CVSS 6.8
MEDIUM This Month

Buffer over-read in Microsoft Office Word allows an unauthorized attacker to disclose information locally. Rated medium severity (CVSS 6.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Buffer Overflow Microsoft 365 Apps +5
NVD
EPSS 0% CVSS 7.8
HIGH This Month

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.

Memory Corruption Denial Of Service Use After Free +6
NVD
EPSS 0% CVSS 7.8
HIGH This Month

Use after free in Microsoft Office Visio 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.

Memory Corruption Denial Of Service Use After Free +4
NVD
EPSS 0% CVSS 8.4
HIGH This Month

Incorrect conversion between numeric types in Microsoft Office Word allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 8.4), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Authentication Bypass Microsoft 365 Apps +5
NVD
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