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Microsoft in the KEV Catalog

as of 2026-11-12
All KEV statistics→
  • By number of CISA KEV entries, Microsoft ranks first among the 289 vendors in the catalog.
  • CISA added 36 Microsoft entries to the KEV catalog in 2024, 39 in 2025, and 41 so far in 2026.
  • For Microsoft entries added to the CISA KEV catalog since 2023, the median time from CVE publication to KEV listing is 0 days (listed on the publication date), compared with 15 days for all entries added in that period.
  • CISA marks 30% of Microsoft KEV entries (117 of 392) as known to be used in ransomware campaigns, compared with 20% of all KEV entries.
  • Among Microsoft KEV entries with a named weakness, the most common is Out-of-bounds Write (CWE-787), in 45 of 341 entries.
  • CISA's SSVC enrichment rates 11% of Microsoft KEV entries with SSVC data (45 of 392) as automatable, compared with 41% across the catalog.

Recently Exploited Microsoft CVEs

Affected Products

82 products
ProductCVEsKEV
Windows175175
Internet Explorer3636
Office3030
Win32k2525
Exchange Server1717
SharePoint1010
Windows 10 Version 16076-
Defender55
SharePoint Server55
Microsoft SharePoint Enterprise Server 20164-
Open Management Infrastructure (OMI)44
Word44
.NET Framework33
Active Directory33
Excel33
Silverlight33
DirectX Graphics Kernel (DXGKRNL)22
Edge22
Edge and Internet Explorer22
Enhanced Cryptographic Provider22
Graphics Device Interface (GDI)22
MSHTML22
PowerPoint22
SMBv122
SMBv1 server22
SQL Server22
XML Core Services22
.NET Core and Visual Studio11
.NET Framework, SharePoint, Visual Studio11
Active Directory Federation Services11
Ancillary Function Driver (afd.sys)11
ASP.NET Core 10.01-
ATM Font Driver11
ChakraCore scripting engine11
Client-Server Run-time Subsystem (CSRSS)11
Configuration Manager11
DirectX11
DWM Core Library11
Exchange11
Forefront Threat Management Gateway (TMG)11
Graphics Component11
HTTP Protocol Stack11
HTTP.sys11
Hyper-V RemoteFX11
Input Method Editor (IME) Japanese11
Internet Explorer and Edge11
Internet Explorer Scripting Engine11
Internet Information Services (IIS)11
Internet Key Exchange (IKE) Service Extensions11
Kerberos Key Distribution Center (KDC)11
Malware Protection Engine11
Microsoft11
Microsoft Confluence SAML SSO plugin1-
Microsoft Exchange Server 2016 Cumulative Update 231-
Microsoft Malware Protection Engine1-
MSCOMCTL.OCX11
Netlogon11
Office and WordPad11
Office Outlook11
Outlook11
Partner Center11
Power Pages11
Project11
Publisher11
Remote Desktop Services11
Skype for Business11
SmartScreen Prompt11
SMBv311
Streaming Service11
Streaming Service Proxy11
Task Scheduler11
Update Notification Manager11
Visual Basic for Applications (VBA)11
Windows 11 version 23H21-
Windows Admin Center1-
Windows Ancillary Function Driver for WinSock11
Windows CNG Key Isolation Service11
Windows COM+ Event System Service11
Windows Notepad1-
Windows Server 20121-
WinVerifyTrust function11
WordPad11

Security Advisories

Microsoft Security Update Guide (MSRC)
https://msrc.microsoft.com/update-guide

Microsoft Vulnerabilities by Product

5 products

Microsoft Windows Vulnerabilities

219 records, 209 in KEV
CVECVSS
CVE-2026-96951KEV
Windows Shell Security Feature Bypass Vulnerability
8.8
CVE-2026-81963KEV
Windows Update Stack Elevation of Privilege Vulnerability
7.8
CVE-2026-85880KEV
Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability
7.8
CVE-2026-33824KEV
Windows Internet Key Exchange (IKE) Service Extensions Remote Code Execution Vulnerability
9.8
CVE-2026-68820KEV
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
7.0
CVE-2008-4250KEV
Microsoft Windows Buffer Overflow Vulnerability
9.8
CVE-2026-32202KEV
Windows Shell Spoofing Vulnerability
4.3
CVE-2023-36424KEV
Windows Common Log File System Driver Elevation of Privilege Vulnerability
7.8
CVE-2025-60710KEV
Host Process for Windows Tasks Elevation of Privilege Vulnerability
7.8
CVE-2008-0015KEV
Microsoft Windows Video ActiveX Control Remote Code Execution Vulnerability
8.8

Showing the 10 highest-priority records of 219.

Microsoft Exchange Server Vulnerabilities

20 records, 19 in KEV
CVECVSS
CVE-2026-42897KEV
Microsoft Exchange Server Spoofing Vulnerability
8.1
CVE-2023-21529KEV
Microsoft Exchange Server Remote Code Execution Vulnerability
8.8
CVE-2021-31196KEV
Microsoft Exchange Server Remote Code Execution Vulnerability
7.2
CVE-2024-21410KEV
Microsoft Exchange Server Elevation of Privilege Vulnerability
9.8
CVE-2022-41080KEV
Microsoft Exchange Server Elevation of Privilege Vulnerability
8.8
CVE-2022-41082KEV
Microsoft Exchange Server Remote Code Execution Vulnerability
8.0
CVE-2022-41040KEV
Microsoft Exchange Server Elevation of Privilege Vulnerability
8.8
CVE-2018-8581KEV
Microsoft Exchange Server Privilege Escalation Vulnerability
7.4
CVE-2021-33766KEV
Microsoft Exchange Server Information Disclosure Vulnerability
7.3
CVE-2021-42321KEV
Microsoft Exchange Server Remote Code Execution Vulnerability
8.8

Showing the 10 highest-priority records of 20.

Microsoft SharePoint Vulnerabilities

20 records, 16 in KEV
CVECVSS
CVE-2026-65660KEV
Microsoft SharePoint Server Remote Code Execution Vulnerability
8.8
CVE-2026-55040KEV
Microsoft SharePoint Server Security Feature Bypass Vulnerability
9.1
CVE-2026-50522KEV
Microsoft SharePoint Remote Code Execution Vulnerability
9.8
CVE-2026-58644KEV
Microsoft SharePoint Remote Code Execution Vulnerability
9.8
CVE-2026-56164KEV
Microsoft SharePoint Server Elevation of Privilege Vulnerability
5.3
CVE-2026-45659KEV
Microsoft SharePoint Remote Code Execution Vulnerability
8.8
CVE-2026-32201KEV
Microsoft SharePoint Server Spoofing Vulnerability
6.5
CVE-2026-20963KEV
Microsoft SharePoint Remote Code Execution Vulnerability
9.8
CVE-2025-49704KEV
Microsoft SharePoint Remote Code Execution Vulnerability
8.8
CVE-2025-49706KEV
Microsoft SharePoint Server Spoofing Vulnerability
6.5

Showing the 10 highest-priority records of 20.

Microsoft Office Vulnerabilities

33 records, 33 in KEV
CVECVSS
CVE-2026-124194KEV
Microsoft Outlook Spoofing Vulnerability
6.5
CVE-2009-0238KEV
Microsoft Office Remote Code Execution
8.8
CVE-2026-21514KEV
Microsoft Word Security Feature Bypass Vulnerability
7.8
CVE-2026-21509KEV
Microsoft Office Security Feature Bypass Vulnerability
7.8
CVE-2009-0556KEV
Microsoft Office PowerPoint Code Injection Vulnerability
8.8
CVE-2007-0671KEV
Microsoft Office Excel Remote Code Execution Vulnerability
8.8
CVE-2024-21413KEV
Microsoft Outlook Remote Code Execution Vulnerability
9.8
CVE-2023-23397KEV
Microsoft Outlook Elevation of Privilege Vulnerability
9.8
CVE-2023-21715KEV
Microsoft Publisher Security Feature Bypass Vulnerability
7.3
CVE-2013-1331KEV
Microsoft Office Buffer Overflow Vulnerability
7.8

Showing the 10 highest-priority records of 33.

Internet Explorer Vulnerabilities

40 records, 40 in KEV
CVECVSS
CVE-2010-0249KEV
Microsoft Internet Explorer Use-After-Free Vulnerability
8.8
CVE-2010-0806KEV
Microsoft Internet Explorer Use-After-Free Vulnerability
8.8
CVE-2010-3962KEV
Microsoft Internet Explorer Uninitialized Memory Corruption Vulnerability
8.1
CVE-2013-3893KEV
Microsoft Internet Explorer Resource Management Errors Vulnerability
8.8
CVE-2012-4792KEV
Microsoft Internet Explorer Use-After-Free Vulnerability
8.8
CVE-2013-3163KEV
Microsoft Internet Explorer Memory Corruption Vulnerability
8.8
CVE-2012-4969KEV
Microsoft Internet Explorer Use-After-Free Vulnerability
8.1
CVE-2013-7331KEV
Microsoft Internet Explorer Information Disclosure Vulnerability
6.5
CVE-2014-4123KEV
Microsoft Internet Explorer Privilege Escalation Vulnerability
8.8
CVE-2015-2425KEV
Microsoft Internet Explorer Memory Corruption Vulnerability
8.8

Showing the 10 highest-priority records of 40.

All Microsoft CVEs

410 records
Filter in the CVE database→
CVECVSS
CVE-2026-124194KEV
Microsoft Outlook Spoofing Vulnerability
6.5
CVE-2026-96951KEV
Windows Shell Security Feature Bypass Vulnerability
8.8
CVE-2026-65660KEV
Microsoft SharePoint Server Remote Code Execution Vulnerability
8.8
CVE-2026-81963KEV
Windows Update Stack Elevation of Privilege Vulnerability
7.8
CVE-2026-85880KEV
Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability
7.8
CVE-2019-1068KEV
Microsoft SQL Server Remote Code Execution Vulnerability
8.8
CVE-2026-33824KEV
Windows Internet Key Exchange (IKE) Service Extensions Remote Code Execution Vulnerability
9.8
CVE-2026-55040KEV
Microsoft SharePoint Server Security Feature Bypass Vulnerability
9.1
CVE-2026-68820KEV
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
7.0
CVE-2026-50522KEV
Microsoft SharePoint Remote Code Execution Vulnerability
9.8
CVE-2026-58644KEV
Microsoft SharePoint Remote Code Execution Vulnerability
9.8
CVE-2026-56164KEV
Microsoft SharePoint Server Elevation of Privilege Vulnerability
5.3
CVE-2026-56155KEV
Active Directory Federation Services Elevation of Privilege Vulnerability
7.8
CVE-2026-45659KEV
Microsoft SharePoint Remote Code Execution Vulnerability
8.8
CVE-2008-4250KEV
Microsoft Windows Buffer Overflow Vulnerability
9.8
CVE-2010-0249KEV
Microsoft Internet Explorer Use-After-Free Vulnerability
8.8
CVE-2010-0806KEV
Microsoft Internet Explorer Use-After-Free Vulnerability
8.8
CVE-2026-45498KEV
Microsoft Defender Denial of Service Vulnerability
4.0
CVE-2009-1537KEV
Microsoft DirectX NULL Byte Overwrite Vulnerability
8.8
CVE-2026-41091KEV
Microsoft Defender Elevation of Privilege Vulnerability
7.8
CVE-2026-42897KEV
Microsoft Exchange Server Spoofing Vulnerability
8.1
CVE-2026-32202KEV
Windows Shell Spoofing Vulnerability
4.3
CVE-2026-33825KEV
Microsoft Defender Elevation of Privilege Vulnerability
7.8
CVE-2026-32201KEV
Microsoft SharePoint Server Spoofing Vulnerability
6.5
CVE-2009-0238KEV
Microsoft Office Remote Code Execution
8.8
CVE-2023-21529KEV
Microsoft Exchange Server Remote Code Execution Vulnerability
8.8
CVE-2012-1854KEV
Microsoft Visual Basic for Applications Insecure Library Loading Vulnerability
7.8
CVE-2023-36424KEV
Windows Common Log File System Driver Elevation of Privilege Vulnerability
7.8
CVE-2025-60710KEV
Host Process for Windows Tasks Elevation of Privilege Vulnerability
7.8
CVE-2026-20963KEV
Microsoft SharePoint Remote Code Execution Vulnerability
9.8
CVE-2008-0015KEV
Microsoft Windows Video ActiveX Control Remote Code Execution Vulnerability
8.8
CVE-2024-43468KEV
Microsoft Configuration Manager Remote Code Execution Vulnerability
9.8
CVE-2026-21510KEV
Windows Shell Security Feature Bypass Vulnerability
8.8
CVE-2026-21513KEV
MSHTML Framework Security Feature Bypass Vulnerability
8.8
CVE-2026-21525KEV
Windows Remote Access Connection Manager Denial of Service Vulnerability
6.2
CVE-2026-21533KEV
Windows Remote Desktop Services Elevation of Privilege Vulnerability
7.8
CVE-2026-21519KEV
Desktop Window Manager Elevation of Privilege Vulnerability
7.8
CVE-2026-21514KEV
Microsoft Word Security Feature Bypass Vulnerability
7.8
CVE-2026-21509KEV
Microsoft Office Security Feature Bypass Vulnerability
7.8
CVE-2026-20805KEV
Desktop Window Manager Information Disclosure Vulnerability
5.5
CVE-2009-0556KEV
Microsoft Office PowerPoint Code Injection Vulnerability
8.8
CVE-2025-62221KEV
Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
7.8
CVE-2025-62215KEV
Windows Kernel Elevation of Privilege Vulnerability
7.0
CVE-2025-59287KEV
Windows Server Update Service (WSUS) Remote Code Execution Vulnerability
9.8
CVE-2025-33073KEV
Windows SMB Client Elevation of Privilege Vulnerability
8.8
CVE-2025-24990KEV
Windows Agere Modem Driver Elevation of Privilege Vulnerability
7.8
CVE-2025-59230KEV
Windows Remote Access Connection Manager Elevation of Privilege Vulnerability
7.8
CVE-2010-3962KEV
Microsoft Internet Explorer Uninitialized Memory Corruption Vulnerability
8.1
CVE-2011-3402KEV
Microsoft Windows Remote Code Execution Vulnerability
8.8
CVE-2013-3918KEV
Microsoft Windows Out-of-Bounds Write Vulnerability
8.8

Showing the 50 highest-priority records of 410. All 410 Microsoft CVEs →

Frequently Asked Questions

How many Microsoft vulnerabilities are actively exploited?→

392 Microsoft CVEs are in the CISA Known Exploited Vulnerabilities catalog as of 2026-11-12. The latest was added on 2026-11-10.

Which Microsoft vulnerabilities are used in ransomware attacks?→

CISA marks 117 Microsoft KEV entries as known to be used in ransomware campaigns, including CVE-2026-45659, CVE-2026-33825, CVE-2023-21529, CVE-2025-60710, CVE-2021-43226.

How quickly are Microsoft vulnerabilities added to the KEV catalog?→

For Microsoft entries added to the CISA KEV catalog since 2023, the median time from CVE publication to KEV listing is 0 days (listed on the publication date), compared with 15 days for all entries added in that period. These figures are as of November 12, 2026.

Which Microsoft products have the most exploited vulnerabilities?→
  • +Windows: 175 CVEs (175 in KEV)
  • +Internet Explorer: 36 CVEs (36 in KEV)
  • +Office: 30 CVEs (30 in KEV)
  • +Win32k: 25 CVEs (25 in KEV)
  • +Exchange Server: 17 CVEs (17 in KEV)
Where does Microsoft publish security advisories?→

Microsoft publishes security advisories at https://msrc.microsoft.com/update-guide. Check the vendor advisory for fixed versions and workarounds before applying updates.

CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Vendor and product names for exploited CVEs follow the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not affiliated with or endorsed by Microsoft, MITRE, CISA, or FIRST.