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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
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 8.8 · EPSS 2.7% KB5129955KB5129956KB5129957+1
Showing 3 of 183All critical

CVEs · October 2026

22 matches in ESU · 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 OctFix has a known issueRevised 26 Oct
KB5126646KB5126651+7
CVE-2026-70185 Microsoft PowerShell Security Feature Bypass VulnerabilityWindows PowerShell Important 8.80.3%SFBLocal Fix has a known issue
KB5126646KB5126651+8
CVE-2026-49785 UEFI Secure Boot Security Feature Bypass VulnerabilityWindows UEFI Important 7.80.4%SFBLocal Fix has a known issue
KB5126646KB5126651+8
CVE-2026-87705 Windows Hyper-V Security Feature Bypass VulnerabilityWindows Hyper-V Important 7.40.4%SFBAdjacent Fix has a known issue
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 Fix has a known issue
KB5126646KB5126651+8
CVE-2026-87714 WebDAV Security Feature Bypass VulnerabilityWebDAV Important 6.50.5%SFBNetwork Fix has a known issue
KB5126646KB5126651+8
CVE-2026-83500 Windows BitLocker Security Feature Bypass VulnerabilityWindows BitLocker Important 6.10.5%SFBPhysical Fix has a known issue
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 Fix has a known issue
KB5126646KB5126651+3
CVE-2026-69979 Windows AppX Deployment Service Security Feature Bypass VulnerabilityWindows AppX Deployment Service Important 5.50.4%SFBLocal Fix has a known issue
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 Fix has a known issue
KB5126646KB5126651+8
CVE-2026-70087 Role: DNS Server Security Feature Bypass VulnerabilityRole: DNS Server Important 5.50.3%SFBLocal Fix has a known issue
KB5126646KB5126651+4

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 12 Nov 16:29 UTC · 265 of 275 readable · 263 fully read · documentation 469/469 current

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