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

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-81396— Microsoft Excel Remote Code Execution Vulnerability

Quick assessment

Affected
Microsoft Microsoft 365 Apps for Enterprise
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Microsoft Office Excel 中的基于栈的缓冲区溢出漏洞，允许未经授权的攻击者在本地执行代码。

CVSS 7.8 · High

Affected Version Matrix 9

VendorProduct Version RangeStatus
Microsoft Microsoft 365 Apps for Enterprise 16.0.1< 16.0.20326.20138 affected
Microsoft Microsoft Excel 2016 16.0.0.0< 16.0.5569.1003 affected
Microsoft Microsoft Office 2016 16.0.0< 16.0.5569.1003 affected
Microsoft Microsoft Office 2019 19.0.0< 16.0.10417.20207 affected
Microsoft Microsoft Office 365 for Mac - affected
Microsoft Microsoft Office LTSC 2021 16.0.1< 16.0.14334.20906 affected
Microsoft Microsoft Office LTSC 2024 16.0.0< 16.0.17932.20976 affected
Microsoft Microsoft Office LTSC for Mac 2021 - affected
Microsoft Microsoft Office LTSC for Mac 2024 - affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-81396

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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 Excel Remote Code Execution Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code 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
栈缓冲区溢出
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Microsoft Microsoft 365 Apps for Enterprise 16.0.1 ~ 16.0.20326.20138 -
Microsoft Microsoft Excel 2016 16.0.0.0 ~ 16.0.5569.1003 -
Microsoft Microsoft Office 2016 16.0.0 ~ 16.0.5569.1003 -
Microsoft Microsoft Office 2019 19.0.0 ~ 16.0.10417.20207 -
Microsoft Microsoft Office 365 for Mac - -
Microsoft Microsoft Office LTSC 2021 16.0.1 ~ 16.0.14334.20906 -
Microsoft Microsoft Office LTSC 2024 16.0.0 ~ 16.0.17932.20976 -
Microsoft Microsoft Office LTSC for Mac 2021 - -
Microsoft Microsoft Office LTSC for Mac 2024 - -

II. Public POCs for CVE-2026-81396

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

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-81396

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-81396 (1)

Same Patch Batch · Microsoft · 2026-09-08 · 966 CVEs total

CVE-2026-83941 9.9 CRITICAL Entra ID Elevation of Privilege Vulnerability
CVE-2026-78510 9.8 CRITICAL Microsoft Word Remote Code Execution Vulnerability
CVE-2026-69491 9.8 CRITICAL Microsoft DirectMusic Remote Code Execution Vulnerability
CVE-2026-69768 9.8 CRITICAL Windows RNDIS Remote Code Execution Vulnerability
CVE-2026-69590 9.8 CRITICAL Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
CVE-2026-68839 9.8 CRITICAL Windows USB Mass Storage Class Driver Remote Code Execution Vulnerability
CVE-2026-69819 9.8 CRITICAL RPC Runtime Library Remote Code Execution Vulnerability
CVE-2026-70296 9.8 CRITICAL Windows Imaging Component Remote Code Execution Vulnerability
CVE-2026-69463 9.8 CRITICAL Windows NTFS Remote Code Execution Vulnerability
CVE-2026-69715 9.8 CRITICAL Windows Direct Show Remote Code Execution Vulnerability
CVE-2026-69525 9.8 CRITICAL Remote Desktop Services Remote Code Execution Vulnerability
CVE-2026-69586 9.8 CRITICAL Microsoft Windows PDF Remote Code Execution Vulnerability
CVE-2026-69496 9.8 CRITICAL Windows Compressed Folder Remote Code Execution Vulnerability
CVE-2026-69595 9.8 CRITICAL Windows Services for NFS ONCRPC XDR Driver Remote Code Execution Vulnerability
CVE-2026-69730 9.8 CRITICAL Windows DNS Server Remote Code Execution Vulnerability
CVE-2026-69276 9.8 CRITICAL Microsoft UxTheme Library (uxtheme.dll) Remote Code Execution Vulnerability
CVE-2026-69493 9.8 CRITICAL Windows Event Logging Service Remote Code Execution Vulnerability
CVE-2026-78509 9.8 CRITICAL Microsoft Office Outlook Remote Code Execution Vulnerability
CVE-2026-73025 9.8 CRITICAL Windows iSCSI Security Feature Bypass Vulnerability
CVE-2026-73009 9.8 CRITICAL Windows Secure Socket Tunneling Protocol (SSTP) Remote Code Execution Vulnerability

Showing top 20 of 966 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Microsoft 365 Apps for Enterprise
Same vendor: Microsoft
Same weakness: CWE-121

V. Comments for CVE-2026-81396

No comments yet

Leave a comment