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

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-80091— Microsoft Office Information Disclosure 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是美国Microsoft公司的一款集成文字处理、电子表格、演示文稿等组件的办公软件套件。 Microsoft Office存在资源管理错误漏洞，该漏洞源于使用未初始化资源，可能导致未经授权的攻击者通过网络泄露信息。

CVSS 6.5 · Medium EPSS 0.69% · P51

Affected Version Matrix 8

VendorProduct Version RangeStatus
Microsoft Microsoft 365 Apps for Enterprise 16.0.1< 16.0.20326.20138 affected
Microsoft Microsoft Office 2016 16.0.0< 16.0.5569.1000 affected
Microsoft Microsoft Office 2019 19.0.0< 16.0.10417.20207 affected
Microsoft Microsoft Office 365 for Mac 1.0.0< 16.113.26091433 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 16.0.1< 16.113.26091433 affected
Microsoft Microsoft Office LTSC for Mac 2024 16.0.0< 16.113.26091433 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-80091

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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 Office Information Disclosure Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Use of uninitialized resource in Microsoft Office allows an unauthorized attacker to disclose information over a network.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对未经初始化资源的使用
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Office 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Office是美国Microsoft公司的一款集成文字处理、电子表格、演示文稿等组件的办公软件套件。 Microsoft Office存在资源管理错误漏洞，该漏洞源于使用未初始化资源，可能导致未经授权的攻击者通过网络泄露信息。
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)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Microsoft Microsoft 365 Apps for Enterprise 16.0.1 ~ 16.0.20326.20138 -
Microsoft Microsoft Office 2016 16.0.0 ~ 16.0.5569.1000 -
Microsoft Microsoft Office 2019 19.0.0 ~ 16.0.10417.20207 -
Microsoft Microsoft Office 365 for Mac 1.0.0 ~ 16.113.26091433 -
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 16.0.1 ~ 16.113.26091433 -
Microsoft Microsoft Office LTSC for Mac 2024 16.0.0 ~ 16.113.26091433 -

II. Public POCs for CVE-2026-80091

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

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-80091

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-80091 (1)

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

CVE-2026-83941 9.9 CRITICAL Entra ID Elevation of Privilege Vulnerability
CVE-2026-70296 9.8 CRITICAL Windows Imaging Component Remote Code Execution Vulnerability
CVE-2026-69491 9.8 CRITICAL Microsoft DirectMusic Remote Code Execution Vulnerability
CVE-2026-69431 9.8 CRITICAL Telnet Client Remote Code Execution Vulnerability
CVE-2026-69276 9.8 CRITICAL Microsoft UxTheme Library (uxtheme.dll) Remote Code Execution Vulnerability
CVE-2026-68839 9.8 CRITICAL Windows USB Mass Storage Class Driver Remote Code Execution Vulnerability
CVE-2026-69910 9.8 CRITICAL Windows Hyper-V Remote Code Execution Vulnerability
CVE-2026-69408 9.8 CRITICAL Microsoft Windows Media Foundation Remote Code Execution Vulnerability
CVE-2026-69586 9.8 CRITICAL Microsoft Windows PDF Remote Code Execution Vulnerability
CVE-2026-77493 9.8 CRITICAL Windows Graphics Component Remote Code Execution Vulnerability
CVE-2026-78509 9.8 CRITICAL Microsoft Office Outlook Remote Code Execution Vulnerability
CVE-2026-69463 9.8 CRITICAL Windows NTFS Remote Code Execution Vulnerability
CVE-2026-73010 9.8 CRITICAL Microsoft Failover Cluster Remote Code Execution Vulnerability
CVE-2026-69769 9.8 CRITICAL Windows HTTP Print Provider Remote Code Execution Vulnerability
CVE-2026-69845 9.8 CRITICAL Windows DHCP Server Remote Code Execution Vulnerability
CVE-2026-69590 9.8 CRITICAL Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
CVE-2026-69829 9.8 CRITICAL Windows Shell 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
CVE-2026-69824 9.8 CRITICAL Microsoft Standard XPS 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-908

V. Comments for CVE-2026-80091

No comments yet

Leave a comment