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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

56 matches · most urgent first CSV Text
CVE Vulnerability Severity CVSSEPSSImpact StatusFixed by
CVE-2026-57099 ASP.NET Core Denial of Service VulnerabilityASP.NET Core Important 7.51.2%Denial of Service Revised 22 Sep
—
CVE-2026-66307 Skype for Business and Lync Denial of Service VulnerabilitySkype for Business Important 7.51.2%Denial of Service
KB5123287KB5123300+1
CVE-2026-67376 Microsoft SQL Server Denial of Service VulnerabilitySQL Server Important 7.51.2%Denial of Service
KB5122768KB5122769+6
CVE-2026-68887 Windows Message Queuing Queue Manager Denial of Service VulnerabilityWindows Message Queuing Queue Manager Important 7.51.2%Denial of Service
KB5122871KB5122876+8
CVE-2026-69329 BranchCache Denial of Service VulnerabilityBranchCache Important 7.51.2%Denial of Service
KB5122871KB5122876+8
CVE-2026-69342 Windows DHCP Server Denial of Service VulnerabilityWindows DHCP Server Important 7.51.2%Denial of Service
KB5122871KB5122876+4
CVE-2026-69378 Microsoft Exchange Server Denial of Service VulnerabilityMicrosoft Exchange Server Important 7.51.2%Denial of Service
KB5121608KB5121609+2
CVE-2026-69428 Windows LDAP - Lightweight Directory Access Protocol Denial of Service VulnerabilityWindows LDAP - Lightweight Directory Access Protocol Important 7.51.2%Denial of Service
KB5122871KB5122876+8
CVE-2026-69587 Windows Internet Key Exchange (IKE) Extension Denial of Service VulnerabilityWindows IKE Extension Important 7.51.2%Denial of Service
KB5122871KB5122880+3
CVE-2026-69588 Windows TCP/IP Denial of Service VulnerabilityWindows TCP/IP Important 7.51.2%Denial of Service
KB5122871KB5122880+3
CVE-2026-69631 Windows DNS Denial of Service VulnerabilityWindows DNS Important 7.51.2%Denial of Service
KB5122871KB5122876+4
CVE-2026-69744 Windows Kerberos Denial of Service VulnerabilityWindows Kerberos Important 7.51.2%Denial of Service
KB5122871KB5124008
CVE-2026-69760 Windows Kerberos Denial of Service VulnerabilityWindows Kerberos Important 7.51.2%Denial of Service
KB5122871KB5122876+6
CVE-2026-69809 Windows Active Directory Domain Services Denial of Service VulnerabilityActive Directory Domain Services Important 7.51.2%Denial of Service
KB5122871KB5122880+3
CVE-2026-69881 Windows Internet Key Exchange (IKE) Extension Denial of Service VulnerabilityWindows IKE Extension Important 7.51.2%Denial of Service
KB5122871KB5122876+5
CVE-2026-70065 Windows DHCP Server Denial of Service VulnerabilityWindows DHCP Server Important 7.51.2%Denial of Service
KB5122871KB5122876+4
CVE-2026-72949 Windows SMB Server Network Transport Driver (srvnet.sys) Denial of Service VulnerabilityWindows SMB Server Network Transport Driver (srvnet.sys) Important 7.51.2%Denial of Service
KB5122871KB5122880+3
CVE-2026-77494 Windows DHCP Server Denial of Service VulnerabilityWindows DHCP Server Important 7.51.2%Denial of Service
KB5122871KB5122876+4
CVE-2026-77498 Windows DHCP Server Denial of Service VulnerabilityWindows DHCP Server Important 7.51.2%Denial of Service
KB5122871KB5122876+4
CVE-2026-77499 Windows DHCP Server Denial of Service VulnerabilityWindows DHCP Server Important 7.51.2%Denial of Service Revised 11 Sep
KB5122871KB5122876+4
CVE-2026-77501 Windows DHCP Server Denial of Service VulnerabilityWindows DHCP Server Important 7.51.2%Denial of Service
KB5122871KB5122876+4
CVE-2026-77502 Windows DHCP Server Denial of Service VulnerabilityWindows DHCP Server Important 7.51.2%Denial of Service
KB5122871KB5122876+4
CVE-2026-77886 Windows DHCP Server Denial of Service VulnerabilityWindows DHCP Server Important 7.51.2%Denial of Service Revised 22 Sep
KB5122871KB5122876+4
CVE-2026-77888 Windows DHCP Server Denial of Service VulnerabilityWindows DHCP Server Important 7.51.2%Denial of Service
KB5122871KB5122876+4
CVE-2026-77889 Windows DHCP Server Denial of Service VulnerabilityWindows DHCP Server Important 7.51.2%Denial of Service
KB5122871KB5122876+4
CVE-2026-77890 Windows DHCP Server Denial of Service VulnerabilityWindows DHCP Server Important 7.51.2%Denial of Service
KB5122871KB5122876+4
CVE-2026-77893 Windows DHCP Server Denial of Service VulnerabilityWindows DHCP Server Important 7.51.2%Denial of Service
KB5122871KB5122876+4
CVE-2026-77895 Windows DHCP Server Denial of Service VulnerabilityWindows DHCP Server Important 7.51.2%Denial of Service
KB5122871KB5122876+4
CVE-2026-83989 Windows Services for NFS ONCRPC XDR Driver Denial of Service VulnerabilityWindows Services for NFS ONCRPC XDR Driver Important 7.51.2%Denial of Service
KB5122871KB5122876+8
CVE-2026-84001 Windows Key Distribution Center Denial of Service VulnerabilityWindows Key Distribution Center Important 7.51.2%Denial of Service
KB5122871KB5122876+8
CVE-2026-69384 Virtual Hard Disk (VHD) Miniport Driver Denial of Service VulnerabilityVirtual Hard Disk (VHD) Miniport Driver Important 7.10.4%Denial of Service
KB5122871KB5122876+6
CVE-2026-62762 Windows Active Directory Domain Services Denial of Service VulnerabilityActive Directory Domain Services Important 6.51.1%Denial of Service
KB5122871KB5122876+8
CVE-2026-66303 Skype for Business and Lync Denial of Service VulnerabilitySkype for Business Important 6.51.1%Denial of Service
KB5123287KB5123300+1
CVE-2026-66308 Skype for Business and Lync Denial of Service VulnerabilitySkype for Business Important 6.51.1%Denial of Service
KB5123287KB5123300+1
CVE-2026-67633 Microsoft SQL Server Denial of Service VulnerabilitySQL Server Important 6.51.1%Denial of Service
KB5122768KB5122769+6
CVE-2026-67641 Microsoft SQL Server Denial of Service VulnerabilitySQL Server Important 6.51.1%Denial of Service
KB5122768KB5122769+2
CVE-2026-68898 Windows iSCSI Denial of Service VulnerabilityWindows iSCSI Important 6.50.9%Denial of Service
KB5122871KB5122876+8
CVE-2026-69374 Windows SMB Server Denial of Service VulnerabilityWindows SMB Server Important 6.51.1%Denial of Service
KB5122871KB5122878+4
CVE-2026-69497 Windows DHCP Server Denial of Service VulnerabilityWindows DHCP Server Important 6.51.1%Denial of Service
KB5122871KB5122876+4
CVE-2026-69781 Windows DHCP Client Denial of Service VulnerabilityWindows DHCP Client Important 6.50.6%Denial of Service
KB5122871KB5124008+1
CVE-2026-69839 Windows iSCSI Target Service Denial of Service VulnerabilityWindows iSCSI Target Service Important 6.51.1%Denial of Service
KB5122871KB5122876+4
CVE-2026-72939 Windows Routing and Remote Access Service (RRAS) Denial of Service VulnerabilityWindows Routing and Remote Access Service (RRAS) Important 6.51.1%Denial of Service
KB5122871KB5122876+8
CVE-2026-77896 Windows Remote Desktop Client Denial of Service VulnerabilityRemote Desktop Client Important 6.50.9%Denial of Service
KB5122871KB5122876+6
CVE-2026-69304 ASP.NET Core Denial of Service VulnerabilityASP.NET Core Important 5.90.9%Denial of Service Revised 25 Sep
KB5126104KB5126105+1
CVE-2026-70091 Windows DNS Denial of Service VulnerabilityWindows DNS Important 5.90.7%Denial of Service
KB5122871KB5122876+4
CVE-2026-72978 Active Directory Federation Services (AD FS) Denial of Service VulnerabilityActive Directory Federation Services (AD FS) Important 5.91.0%Denial of Service
KB5122871KB5122876+4
CVE-2026-78523 Windows DNS Server Denial of Service VulnerabilityWindows DNS Important 5.91.0%Denial of Service
KB5122871KB5122876+4
CVE-2026-69372 Windows Network File System Denial of Service VulnerabilityWindows Network File System Important 5.70.9%Denial of Service
KB5122871KB5122876+4
CVE-2026-69405 Windows DHCP Server Denial of Service VulnerabilityWindows DHCP Server Important 5.70.6%Denial of Service Revised 11 Sep
KB5122871KB5122876+4
CVE-2026-69416 Windows DHCP Server Denial of Service VulnerabilityWindows DHCP Server Important 5.70.6%Denial of Service Revised 15 Sep
KB5122871KB5122876+4

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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