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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
1474Microsoft CVEsreleased Tue 13 Oct 94Critical81 need an update · 13 fixed service-side 1Exploited in the wild
1Publicly disclosed
1In CISA KEV
256Revised since release

September 2026: 998 CVEs · 132 critical · 2 exploited · 2 in CISA KEV

Act first · October 2026

Exploited, KEV-listed, or publicly disclosed
CVE-2026-96951ImportantExploitedCISA KEV · due 16 OctSFBNetwork
Windows Shell Security Feature Bypass Vulnerability
CVSS 8.8 KB5126646KB5126651KB5126653+6
Patch next · critical, "exploitation more likely", or top 5% EPSS · needs an update183
CVSS 8.1 · EPSS 1.4% KB5128895KB5128896KB5128897+1
CVSS 8.1 · EPSS 1.0% KB5126646KB5126651KB5126653+7
CVSS 8.8 · EPSS 2.7% KB5129955KB5129956KB5129957+1
Showing 3 of 183All critical

CVEs · October 2026

43 matches · most urgent first CSVText
CVE Vulnerability Severity CVSSEPSSImpact StatusFixed by
CVE-2026-83500 Windows BitLocker Security Feature Bypass VulnerabilityWindows BitLocker Important 6.10.5%SFBPhysical
KB5126646KB5126651+6
CVE-2026-69982 Active Directory Federation Services (AD FS) Security Feature Bypass VulnerabilityActive Directory Federation Services (AD FS) Important 5.90.6%SFBNetwork
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
KB5126646KB5126651+1
CVE-2026-69979 Windows AppX Deployment Service Security Feature Bypass VulnerabilityWindows AppX Deployment Service Important 5.50.4%SFBLocal
KB5126646KB5126653+4
CVE-2026-70057 Windows Routing and Remote Access Service (RRAS) Security Feature Bypass VulnerabilityWindows Routing and Remote Access Service (RRAS) Important 5.50.3%SFBLocal
KB5126646KB5126651+8
CVE-2026-70087 Role: DNS Server Security Feature Bypass VulnerabilityRole: DNS Server Important 5.50.3%SFBLocal
KB5126646KB5126651+4
CVE-2026-81964 Windows Update Orchestrator Service Security Feature Bypass VulnerabilityWindows Update Orchestrator Service Important 5.50.3%SFBLocal
KB5126646KB5126653+4
CVE-2026-83787 Windows DHCP Server Security Feature Bypass VulnerabilityWindows DHCP Server Important 5.50.3%SFBLocal
KB5126646KB5126651+4
CVE-2026-84011 Windows SMB Client Security Feature Bypass VulnerabilityWindows SMB Client Important 5.50.3%SFBLocal
KB5126646KB5126653+3
CVE-2026-85865 Windows DHCP Server Security Feature Bypass VulnerabilityWindows DHCP Server Important 5.50.3%SFBLocal
KB5126646KB5126651+4
CVE-2026-69640 Windows Key Distribution Center Security Feature Bypass VulnerabilityWindows Key Distribution Center Important 5.30.7%SFBNetwork
KB5126646KB5126651+6
CVE-2026-85939 Windows Kernel Security Feature Bypass VulnerabilityWindows Kernel Important 5.30.4%SFBNetwork
KB5126646KB5126651+6

Advisories · October 2026

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 11 Nov 16:19 UTC · 274 of 275 readable · 273 fully read · documentation 469/469 current

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