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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-2026-83915 Windows Diagnostic Policy Service Elevation of Privilege VulnerabilityWindows Diagnostic Policy Service Important 7.00.3%EoPLocal Fix has a known issue
KB5126646KB5126651+5
CVE-2026-83916 Windows Error Reporting Remote Code Execution VulnerabilityWindows Error Reporting Important 7.00.3%RCELocal Fix has a known issue
KB5126646KB5126651+8
CVE-2026-83921 Windows Search Service Elevation of Privilege VulnerabilityMicrosoft Windows Search Component Important 7.00.3%EoPLocal Fix has a known issue
KB5126646KB5126651+8
CVE-2026-83924 Windows Kernel Elevation of Privilege VulnerabilityWindows Kernel Important 7.00.3%EoPLocal Fix has a known issue
KB5126646KB5126651+8
CVE-2026-83930 Windows Update Orchestrator Service Elevation of Privilege VulnerabilityWindows Update Orchestrator Service Important 7.00.3%EoPLocal Fix has a known issue
KB5126646KB5126653+2
CVE-2026-83940 Windows Device Association Service Elevation of Privilege VulnerabilityWindows Device Association Service Important 7.00.3%EoPLocal
KB5122871KB5122876+6
CVE-2026-83999 Windows Resilient File System (ReFS) Deduplication Service Elevation of Privilege VulnerabilityWindows Resilient File System (ReFS) Deduplication Service Important 7.00.3%EoPLocal
KB5122871KB5124008+1
CVE-2026-84014 Windows Device Association Service Elevation of Privilege VulnerabilityWindows Device Association Service Important 7.00.2%EoPLocal Fix has a known issue
KB5126646KB5126651+7
CVE-2026-84018 Windows Print Spooler Components Elevation of Privilege VulnerabilityWindows Print Spooler Components Important 7.00.2%EoPLocal Fix has a known issueRevised 10 Nov
KB5126646KB5126651+8
CVE-2026-84019 Windows Advanced Rasterization Platform Elevation of Privilege VulnerabilityWindows Advanced Rasterization Platform Important 7.00.2%EoPLocal Fix has a known issueRevised 14 Oct
KB5126646KB5126651+5
CVE-2026-84020 Windows Routing and Remote Access Service (RRAS) Elevation of Privilege VulnerabilityWindows Routing and Remote Access Service (RRAS) Important 7.00.2%EoPLocal Fix has a known issue
KB5126646KB5126653+4
CVE-2026-85328 Windows Projected File System Elevation of Privilege VulnerabilityWindows Projected File System Important 7.00.2%EoPLocal Fix has a known issue
KB5126646KB5126651+5

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 17:25 UTC · 274 of 275 readable · 273 fully read · documentation 469/469 current

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