Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-21514— Microsoft Word Security Feature Bypass Vulnerability

Quick assessment

Affected
Microsoft Microsoft 365 Apps for Enterprise
Exploitation
Confirmed exploitation in the wild; remediate immediately
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Microsoft Word是美国微软（Microsoft）公司的一套Office套件中的文字处理软件。 Microsoft Word存在安全漏洞。攻击者利用该漏洞可以绕过某些功能。以下产品和版本受到影响：Microsoft 365 Apps for Enterprise for 32-bit Systems,Microsoft 365 Apps for Enterprise for 64-bit Systems,Microsoft Office LTSC for Mac 2021,Microsoft O

CVSS 7.8 · High KEV EPSS 1.58% · P75

Possible ATT&CK Techniques 1 AI

T1548.003 · Sudo and Sudo Caching

Affected Version Matrix 5

VendorProduct Version RangeStatus
Microsoft Microsoft 365 Apps for Enterprise 16.0.1< https://aka.ms/OfficeSecurityReleases affected
Microsoft Microsoft Office LTSC 2021 16.0.1< https://aka.ms/OfficeSecurityReleases affected
Microsoft Microsoft Office LTSC 2024 16.0.0< https://aka.ms/OfficeSecurityReleases affected
Microsoft Microsoft Office LTSC for Mac 2021 16.0.1< 16.106.26020821 affected
Microsoft Microsoft Office LTSC for Mac 2024 16.0.0< 16.106.26020821 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-21514

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Microsoft Word Security Feature Bypass Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Reliance on untrusted inputs in a security decision in Microsoft Office Word allows an unauthorized attacker to bypass a security feature locally.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在安全决策中依赖未经信任的输入
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Word 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Word是美国微软（Microsoft）公司的一套Office套件中的文字处理软件。 Microsoft Word存在安全漏洞。攻击者利用该漏洞可以绕过某些功能。以下产品和版本受到影响：Microsoft 365 Apps for Enterprise for 32-bit Systems,Microsoft 365 Apps for Enterprise for 64-bit Systems,Microsoft Office LTSC for Mac 2021,Microsoft O
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Shenlong Deep Dive — AI Deep Analysis

10-question deep dive: root cause, exploitation, mitigation, urgency. Read summary free, full version requires login.

Read summary Full analysis (login)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Microsoft Microsoft 365 Apps for Enterprise 16.0.1 ~ https://aka.ms/OfficeSecurityReleases -
Microsoft Microsoft Office LTSC 2021 16.0.1 ~ https://aka.ms/OfficeSecurityReleases -
Microsoft Microsoft Office LTSC 2024 16.0.0 ~ https://aka.ms/OfficeSecurityReleases -
Microsoft Microsoft Office LTSC for Mac 2021 16.0.1 ~ 16.106.26020821 -
Microsoft Microsoft Office LTSC for Mac 2024 16.0.0 ~ 16.106.26020821 -

II. Public POCs for CVE-2026-21514

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-21514

请登录查看更多情报信息。

Same Patch Batch · Microsoft · 2026-02-10 · 54 CVEs total

CVE-2026-21531 9.8 CRITICAL Azure SDK for Python Remote Code Execution Vulnerability
CVE-2026-21537 8.8 HIGH Microsoft Defender for Endpoint Linux Extension Remote Code Execution Vulnerability
CVE-2026-21510 8.8 HIGH Windows Shell Security Feature Bypass Vulnerability
CVE-2026-21513 8.8 HIGH MSHTML Framework Security Feature Bypass Vulnerability
CVE-2026-21518 8.8 HIGH GitHub Copilot and Visual Studio Code Security Feature Bypass Vulnerability
CVE-2026-21516 8.8 HIGH GitHub Copilot for Jetbrains Remote Code Execution Vulnerability
CVE-2026-21255 8.8 HIGH Windows Hyper-V Security Feature Bypass Vulnerability
CVE-2026-21256 8.8 HIGH GitHub Copilot and Visual Studio Remote Code Execution Vulnerability
CVE-2026-21228 8.1 HIGH Azure Local Remote Code Execution Vulnerability
CVE-2026-21523 8.0 HIGH GitHub Copilot and Visual Studio Code Remote Code Execution Vulnerability
CVE-2026-21257 8.0 HIGH GitHub Copilot and Visual Studio Elevation of Privilege Vulnerability
CVE-2026-21229 8.0 HIGH Power BI Remote Code Execution Vulnerability
CVE-2026-21236 7.8 HIGH Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
CVE-2026-21533 7.8 HIGH Windows Remote Desktop Services Elevation of Privilege Vulnerability
CVE-2026-21251 7.8 HIGH Cluster Client Failover (CCF) Elevation of Privilege Vulnerability
CVE-2026-21232 7.8 HIGH Windows HTTP.sys Elevation of Privilege Vulnerability
CVE-2026-21239 7.8 HIGH Windows Kernel Elevation of Privilege Vulnerability
CVE-2026-21238 7.8 HIGH Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
CVE-2026-21231 7.8 HIGH Windows Kernel Elevation of Privilege Vulnerability
CVE-2026-21259 7.8 HIGH Microsoft Excel Elevation of Privilege Vulnerability

Showing top 20 of 54 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Microsoft 365 Apps for Enterprise
Same vendor: Microsoft
Same weakness: CWE-807

V. Comments for CVE-2026-21514

No comments yet

Leave a comment