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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

27 matches in Windows · most urgent first CSVText
CVE Vulnerability Severity CVSSEPSSImpact StatusFixed by
CVE-2026-96951 Windows Shell Security Feature Bypass VulnerabilityWindows Shell Important 8.89.8%SFBNetwork ExploitedCISA KEV · due 16 OctRevised 26 Oct
KB5126646KB5126651+7
CVE-2026-108463 Windows SmartScreen Security Feature Bypass VulnerabilityWindows SmartScreen Important 8.81.0%SFBNetwork
KB5127646KB5127648
CVE-2026-70185 Microsoft PowerShell Security Feature Bypass VulnerabilityWindows PowerShell Important 8.80.3%SFBLocal
KB5126646KB5126651+8
CVE-2026-49785 UEFI Secure Boot Security Feature Bypass VulnerabilityWindows UEFI Important 7.80.4%SFBLocal
KB5126646KB5126651+8
CVE-2026-103577 Microsoft QUIC Security Feature Bypass VulnerabilityMicrosoft QUIC Important 7.50.6%SFBNetwork
KB5126646KB5126653+3
CVE-2026-87705 Windows Hyper-V Security Feature Bypass VulnerabilityWindows Hyper-V Important 7.40.4%SFBAdjacent
KB5126646KB5126651+8
CVE-2026-59116 Windows Remote Desktop Security Feature Bypass VulnerabilityWindows Remote Desktop Important 6.80.4%SFBNetwork
KB5099414KB5099444+8
CVE-2026-85805 Microsoft PowerShell Security Feature Bypass VulnerabilityWindows PowerShell Important 6.50.6%SFBNetwork
KB5126646KB5126651+8
CVE-2026-87714 WebDAV Security Feature Bypass VulnerabilityWebDAV Important 6.50.5%SFBNetwork
KB5126646KB5126651+8
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

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 23:12 UTC · 273 of 275 readable · 271 fully read · documentation 469/469 current

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