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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-2026-83918 Windows Kernel Elevation of Privilege VulnerabilityWindows Kernel Important 7.80.3%EoPLocal Fix has a known issue
KB5126646KB5126651+8
CVE-2026-83919 Microsoft Internet Messaging API Remote Code Execution VulnerabilityMicrosoft Internet Messaging API Important 7.80.3%RCELocal Fix has a known issueRevised 10 Nov
KB5126646KB5126651+8
CVE-2026-83920 Windows Search Service Elevation of Privilege VulnerabilityMicrosoft Windows Search Component Important 7.80.3%EoPLocal Fix has a known issue
KB5126646KB5126651+8
CVE-2026-83922 Windows Direct Composition Elevation of Privilege VulnerabilityWindows Direct Composition Important 7.80.3%EoPLocal Fix has a known issue
KB5126646KB5126653+4
CVE-2026-83927 Windows Registry Elevation of Privilege VulnerabilityWindows Registry Important 7.80.4%EoPLocal Fix has a known issue
KB5126646KB5126653+4
CVE-2026-83931 Windows Hyper-V Remote Code Execution VulnerabilityWindows Hyper-V Important 7.80.3%RCELocal Fix has a known issue
KB5126646KB5126653+3
CVE-2026-83932 Windows Group Policy Elevation of Privilege VulnerabilityWindows Group Policy Important 7.80.3%EoPLocal Fix has a known issue
KB5126646KB5126651+8
CVE-2026-83942 Windows Kernel Elevation of Privilege VulnerabilityWindows Kernel Important 7.80.3%EoPLocal
KB5122871KB5122876+5
CVE-2026-83952 Windows Resilient File System (ReFS) Elevation of Privilege VulnerabilityWindows Resilient File System (ReFS) Important 7.80.3%EoPLocal Revised 10 Nov
KB5122871KB5124008+1
CVE-2026-83954 Windows Biometric Service Elevation of Privilege VulnerabilityWindows Biometric Service Important 7.80.3%EoPLocal
KB5122871KB5122876+6
CVE-2026-83955 Windows Biometric Service Elevation of Privilege VulnerabilityWindows Biometric Service Important 7.80.3%EoPLocal
KB5122871KB5122876+6
CVE-2026-83967 Windows Biometric Service Elevation of Privilege VulnerabilityWindows Biometric Service Important 7.80.3%EoPLocal
KB5122871KB5122876+6

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 06:11 UTC · 274 of 275 readable · 272 fully read · documentation 469/469 current

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