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Security

Microsoft security updates and public advisory evidence: affected products, fixing updates, exploitation and source coverage.

Security Update Guide CISA KEV

CVEs · all collected releases

2592 matches in Windows · most urgent first CSVText
CVE Vulnerability Severity CVSSEPSSImpact StatusFixed by
CVE-2026-69929 Windows DHCP Server Information Disclosure VulnerabilityWindows DHCP Server Important 5.90.8%Information DisclosureNetwork
KB5122871KB5122876+4
CVE-2026-69930 Windows DHCP Server Information Disclosure VulnerabilityWindows DHCP Server Important 5.90.8%Information DisclosureNetwork
KB5122871KB5122876+4
CVE-2026-69982 Active Directory Federation Services (AD FS) Security Feature Bypass VulnerabilityActive Directory Federation Services (AD FS) Important 5.90.6%SFBNetwork Fix has a known issue
KB5126646KB5126651+3
CVE-2026-70005 Active Directory Federation Services (AD FS) Security Feature Bypass VulnerabilityActive Directory Federation Services (AD FS) Important 5.90.6%SFBNetwork Fix has a known issue
KB5126646KB5126651+1
CVE-2026-70091 Windows DNS Denial of Service VulnerabilityWindows DNS Important 5.90.7%DoSNetwork
KB5122871KB5122876+4
CVE-2026-70124 Windows DHCP Server Information Disclosure VulnerabilityWindows DHCP Server Important 5.90.8%Information DisclosureNetwork
KB5122871KB5122876+4
CVE-2026-72978 Active Directory Federation Services (AD FS) Denial of Service VulnerabilityActive Directory Federation Services (AD FS) Important 5.91.0%DoSNetwork
KB5122871KB5122876+4
CVE-2026-78523 Windows DNS Server Denial of Service VulnerabilityWindows DNS Important 5.91.0%DoSNetwork
KB5122871KB5122876+4
CVE-2026-85790 Microsoft QUIC Information Disclosure VulnerabilityMicrosoft QUIC Important 5.90.8%Information DisclosureNetwork Fix has a known issueRevised 16 Oct
KB5126646KB5126653+3
CVE-2026-88099 Windows Failover Cluster Denial of Service VulnerabilityWindows Failover Cluster Important 5.90.8%DoSNetwork Fix has a known issue
KB5126646KB5126651+1
CVE-2026-95913 Windows Hyper-V Denial of Service VulnerabilityWindows Hyper-V Important 5.90.8%DoSNetwork
KB5131077KB5131080+8
CVE-2026-96300 RPC Endpoint Mapper Service Denial of Service VulnerabilityRPC Endpoint Mapper Service Important 5.90.9%DoSNetwork Fix has a known issue
KB5126646KB5126651+8

Advisories

MSRC guidance without a CVE of its own · 1 advisory
ADV260001
Hardening changes for ReFS volumes on removable mediaStarting with Windows updates released on and after October 13, 2026, Microsoft is making hardening changes to the Resilient File System (ReFS) . This change is not enable by default until 2027. Please see Hardening changes for ReFS volumes on removable media for more information.
Published 13 Oct28 affected products
ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 13 Nov 23:46 UTC · 274 of 275 readable · 270 fully read · documentation 469/469 current

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