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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-2026-77893 Windows DHCP Server Denial of Service VulnerabilityWindows DHCP Server Important 7.51.2%DoSNetwork
KB5122871KB5122876+4
CVE-2026-77895 Windows DHCP Server Denial of Service VulnerabilityWindows DHCP Server Important 7.51.2%DoSNetwork
KB5122871KB5122876+4
CVE-2026-78446 Windows Distributed File System (DFS) Remote Code Execution VulnerabilityWindows Distributed File System (DFS) Important 7.50.5%RCENetwork Revised 5 Oct
KB5122871KB5122876+8
CVE-2026-80094 Remote Desktop Gateway Service Elevation of Privilege VulnerabilityRemote Desktop Gateway Service Important 7.50.5%EoPNetwork
KB5131077KB5131080+3
CVE-2026-83516 Windows Local Security Authority Subsystem Service (LSASS) Denial of Service VulnerabilityWindows Local Security Authority Subsystem Service (LSASS) Important 7.51.3%DoSNetwork Fix has a known issue
KB5126646KB5126651+3
CVE-2026-83635 Role: DNS Server Denial of Service VulnerabilityRole: DNS Server Important 7.51.3%DoSNetwork Fix has a known issue
KB5126646KB5126651+4
CVE-2026-83645 Active Directory Federation Services (AD FS) Denial of Service VulnerabilityActive Directory Federation Services (AD FS) Important 7.51.2%DoSNetwork Fix has a known issue
KB5126646KB5126651+4
CVE-2026-83647 Windows Active Directory Domain Services Denial of Service VulnerabilityActive Directory Domain Services Important 7.51.3%DoSNetwork Fix has a known issue
KB5126646KB5126651+7
CVE-2026-83655 Network Policy Server (NPS) Denial of Service VulnerabilityNetwork Policy Server (NPS) Important 7.51.3%DoSNetwork Fix has a known issue
KB5126646KB5126651+8
CVE-2026-83665 Windows DHCP Server Denial of Service VulnerabilityWindows DHCP Server Important 7.51.3%DoSNetwork Fix has a known issue
KB5126646KB5126651+4
CVE-2026-83670 Function Discovery Service (fdwsd.dll) Information Disclosure VulnerabilityFunction Discovery Service (fdwsd.dll) Important 7.51.1%Information DisclosureNetwork Fix has a known issue
KB5126646KB5126651+8
CVE-2026-83677 Windows DHCP Client Denial of Service VulnerabilityWindows DHCP Client Important 7.51.1%DoSNetwork Fix has a known issue
KB5126646KB5127646+1

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 11:05 UTC · 270 of 275 readable · 268 fully read · documentation 469/469 current

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