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Security

CVE detail from Microsoft's public MSRC CVRF API, cross-checked with CISA's Known Exploited Vulnerabilities catalog. Counts cover Microsoft-issued CVEs; republished third-party CVEs such as Chromium or Linux are hidden unless you include them.

Security Update Guide CISA KEV
998Microsoft CVEsreleased Tue 8 Sep 132Critical105 need an update · rest fixed service-side 2Exploited in the wild
0Publicly disclosed
2In CISA KEV
149Revised since release

Act first · September 2026

Exploited, KEV-listed, or publicly disclosed
Elevation of Privilege · CVSS 7.8 KB5122871KB5122880KB5124008+1
Elevation of Privilege · CVSS 7.8 KB5122876KB5122878KB5122882+3
Patch next · critical, "exploitation more likely", or top 5% EPSS · needs an update155
Remote Code Execution · CVSS 9.8 · EPSS 1.0% KB5122871KB5122876KB5122882+3
Remote Code Execution · CVSS 8.8 · EPSS 0.8% KB5122871KB5122876KB5122878+7
Elevation of Privilege · CVSS 9.0 · EPSS 0.7% No KB listed
Remote Code Execution · CVSS 7.5 · EPSS 0.7% KB5122871KB5122876KB5122878+7
Information Disclosure · CVSS 5.5 · EPSS 0.4% KB5122871KB5122880KB5124008+1
Remote Code Execution · CVSS 7.8 · EPSS 0.3% KB5122871KB5122876KB5122882+3
Remote Code Execution · CVSS 7.0 · EPSS 0.3% KB5122871KB5122876KB5122882+3
Remote Code Execution · CVSS 8.8 · EPSS 1.7% No KB listed
Showing 8 of 155All critical

CVEs · September 2026

139 matches · most urgent first CSV Text
CVE Vulnerability Severity CVSSEPSSImpact StatusFixed by
CVE-2026-78503 Microsoft Office Word Information Disclosure VulnerabilityMicrosoft Office Word Important 6.50.9%Information Disclosure Revised 17 Sep
KB5002923
CVE-2026-78515 Microsoft Office Excel Information Disclosure VulnerabilityMicrosoft Office Excel Important 6.50.9%Information Disclosure Revised 17 Sep
KB5002916
CVE-2026-78522 Microsoft Office Word Information Disclosure VulnerabilityMicrosoft Office Word Important 6.50.9%Information Disclosure
KB5002923
CVE-2026-80073 Microsoft Office Outlook Information Disclosure VulnerabilityMicrosoft Office Outlook Important 6.50.9%Information Disclosure Revised 24 Sep
KB5002919
CVE-2026-80076 Microsoft Office Information Disclosure VulnerabilityMicrosoft Office Important 6.50.9%Information Disclosure Revised 17 Sep
—
CVE-2026-80078 Microsoft Office Information Disclosure VulnerabilityMicrosoft Office Important 6.50.9%Information Disclosure Revised 17 Sep
—
CVE-2026-80079 Microsoft Office Word Information Disclosure VulnerabilityMicrosoft Office Word Important 6.50.9%Information Disclosure
KB5002923
CVE-2026-80082 Microsoft Office Information Disclosure VulnerabilityMicrosoft Office Important 6.50.9%Information Disclosure Revised 17 Sep
—
CVE-2026-80084 Microsoft Office Outlook Information Disclosure VulnerabilityMicrosoft Office Outlook Important 6.50.9%Information Disclosure
KB5002898
CVE-2026-80086 Microsoft Office PowerPoint Information Disclosure VulnerabilityMicrosoft Office PowerPoint Important 6.50.9%Information Disclosure Revised 17 Sep
—
CVE-2026-80087 Microsoft Office Information Disclosure VulnerabilityMicrosoft Office Important 6.50.9%Information Disclosure Revised 17 Sep
KB5002916
CVE-2026-80088 Microsoft Office Word Information Disclosure VulnerabilityMicrosoft Office Word Important 6.50.9%Information Disclosure Revised 17 Sep
KB5002916
CVE-2026-80089 Microsoft Office Information Disclosure VulnerabilityMicrosoft Office Important 6.50.9%Information Disclosure Revised 17 Sep
KB5002916
CVE-2026-80090 Microsoft Office Word Information Disclosure VulnerabilityMicrosoft Office Word Important 6.50.9%Information Disclosure Revised 17 Sep
KB5002923
CVE-2026-80091 Microsoft Office Information Disclosure VulnerabilityMicrosoft Office Important 6.50.9%Information Disclosure Revised 17 Sep
KB5002916
CVE-2026-69559 Microsoft Teams for Android Information Disclosure VulnerabilityMicrosoft Teams for Android Important 5.80.3%Information Disclosure Revised 15 Sep
—
CVE-2026-78506 Microsoft Office Word Information Disclosure VulnerabilityMicrosoft Office Word Important 5.50.5%Information Disclosure Revised 17 Sep
KB5002923
CVE-2026-78513 Microsoft Office PowerPoint Information Disclosure VulnerabilityMicrosoft Office PowerPoint Important 5.50.5%Information Disclosure Revised 17 Sep
KB5002920
CVE-2026-81387 Microsoft Excel Information Disclosure VulnerabilityMicrosoft Office Excel Important 5.50.6%Information Disclosure Revised 17 Sep
KB5002904KB5002914
CVE-2026-81390 Microsoft Excel Information Disclosure VulnerabilityMicrosoft Office Excel Important 5.50.5%Information Disclosure Revised 17 Sep
KB5002904KB5002910+1
CVE-2026-81391 Microsoft Excel Information Disclosure VulnerabilityMicrosoft Office Excel Important 5.50.5%Information Disclosure Revised 17 Sep
KB5002904KB5002914
CVE-2026-81392 Microsoft Excel Information Disclosure VulnerabilityMicrosoft Office Excel Important 5.50.5%Information Disclosure Revised 17 Sep
KB5002904KB5002914
CVE-2026-81393 Microsoft Excel Information Disclosure VulnerabilityMicrosoft Office Excel Important 5.50.5%Information Disclosure Revised 17 Sep
KB5002904KB5002914
CVE-2026-81394 Microsoft Excel Information Disclosure VulnerabilityMicrosoft Office Excel Important 5.50.6%Information Disclosure Revised 17 Sep
KB5002904KB5002914
CVE-2026-81395 Microsoft Excel Information Disclosure VulnerabilityMicrosoft Office Excel Important 5.50.5%Information Disclosure Revised 17 Sep
KB5002904KB5002914
CVE-2026-81399 Microsoft Excel Information Disclosure VulnerabilityMicrosoft Office Excel Important 5.50.5%Information Disclosure Revised 17 Sep
KB5002904KB5002914
CVE-2026-81400 Microsoft Excel Information Disclosure VulnerabilityMicrosoft Office Excel Important 5.50.5%Information Disclosure Revised 17 Sep
KB5002904KB5002914
CVE-2026-81401 Microsoft Excel Information Disclosure VulnerabilityMicrosoft Office Excel Important 5.50.5%Information Disclosure Revised 17 Sep
KB5002904KB5002910+1
CVE-2026-81958 Microsoft Excel Information Disclosure VulnerabilityMicrosoft Office Excel Important 5.50.5%Information Disclosure Revised 17 Sep
KB5002904KB5002914
CVE-2026-83949 Microsoft Office Word Information Disclosure VulnerabilityMicrosoft Office Word Important 5.50.5%Information Disclosure
KB5002923
CVE-2026-83951 Microsoft Office Word Information Disclosure VulnerabilityMicrosoft Office Word Important 5.50.5%Information Disclosure
KB5002923
CVE-2026-85875 Microsoft Office Excel Information Disclosure VulnerabilityMicrosoft Office Excel Important 5.50.5%Information Disclosure Revised 17 Sep
KB5002904KB5002914
CVE-2026-72976 Microsoft Office Word Information Disclosure VulnerabilityMicrosoft Office Word Important 5.00.5%Information Disclosure Revised 17 Sep
KB5002923
CVE-2026-69690 Microsoft Office SharePoint Spoofing VulnerabilityMicrosoft Office SharePoint Important 4.60.4%Spoofing
KB5002908
CVE-2026-69615 Microsoft Office SharePoint Spoofing VulnerabilityMicrosoft Office SharePoint Important 3.50.4%Spoofing
KB5002908
CVE-2026-69904 Microsoft Office SharePoint Information Disclosure VulnerabilityMicrosoft Office SharePoint Important 3.50.6%Information Disclosure
KB5002908
CVE-2026-69843 Microsoft Fabric Elevation of Privilege VulnerabilityMicrosoft Fabric Critical 10.00.9%Elevation of Privilege
Service-side fix
CVE-2026-80098 Copilot Studio Elevation of Privilege VulnerabilityCopilot Studio Critical 9.30.5%Elevation of Privilege
Service-side fix
CVE-2026-70178 Microsoft Fabric Elevation of Privilege VulnerabilityMicrosoft Fabric Critical 8.50.6%Elevation of Privilege
Service-side fix

CISA KEV · Microsoft additions

389 Microsoft CVEs listed
CVE-2026-65660 SharePoint
Microsoft SharePoint Code Injection Vulnerability
Added 25 Sep 2026Federal due date 28 Sep
CVE-2026-85880 Windows
Microsoft Windows Heap-Based Buffer Overflow Vulnerability
Added 8 Sep 2026Federal due date 22 Sep
CVE-2026-81963 Windows
Microsoft Windows Link Following Vulnerability
Added 8 Sep 2026Federal due date 22 Sep
CVE-2019-1068 SQL Server
Microsoft SQL Server Remote Code Execution Vulnerability
Added 26 Aug 2026Federal due date 29 Aug
CVE-2026-55040 SharePoint
Microsoft SharePoint Weak Authentication Vulnerability
Added 18 Aug 2026Federal due date 21 Aug
CVE-2026-33824 Internet Key Exchange (IKE) Service Extensions
Microsoft Internet Key Exchange (IKE) Service Extensions Double Free Vulnerability
Added 18 Aug 2026Federal due date 21 Aug
CVE-2026-68820 Windows Ancillary Function Driver for WinSock
Microsoft Windows Ancillary Function Driver for WinSock Use-After-Free Vulnerability
Added 11 Aug 2026Federal due date 25 Aug
CVE-2026-50522 SharePoint
Microsoft SharePoint Deserialization of Untrusted Data Vulnerability
Added 22 Jul 2026Federal due date 25 Jul
CVE-2026-58644 SharePoint
Microsoft SharePoint Deserialization of Untrusted Data Vulnerability
Added 16 Jul 2026Federal due date 19 Jul
CVE-2026-56164 SharePoint Server
Microsoft SharePoint Server Missing Authentication for Critical Function Vulnerability
Added 14 Jul 2026Federal due date 17 Jul
CVE-2026-56155 Active Directory Federation Services
Microsoft Active Directory Federation Services Insufficient Granularity of Access Control Vulnerability
Added 14 Jul 2026Federal due date 28 Jul
CVE-2026-45659 SharePoint ServerRansomware
Microsoft SharePoint Server Deserialization of Untrusted Data Vulnerability
Added 1 Jul 2026Federal due date 4 Jul

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