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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

349 matches · most urgent first CSVText
CVE Vulnerability Severity CVSSEPSSImpact StatusFixed by
CVE-2026-83780 Windows CCFFilter Driver Remote Code Execution VulnerabilityWindows CCFFilter Driver Important 9.81.1%RCENetwork
KB5126646KB5126651+2
CVE-2026-83782 Windows Shell Remote Code Execution VulnerabilityWindows Shell Important 9.81.0%RCENetwork Revised 20 Oct
KB5126646KB5126651+8
CVE-2026-83869 Windows Domain Name Service Remote Code Execution VulnerabilityRole: DNS Server Important 9.80.8%RCENetwork
KB5126646KB5126651+8
CVE-2026-83910 RPC Runtime Library Remote Code Execution VulnerabilityRPC Runtime Important 9.81.1%RCENetwork
KB5126646KB5126651+8
CVE-2026-83935 Microsoft XML Remote Code Execution VulnerabilityMicrosoft XML Important 9.80.9%RCENetwork
KB5126646KB5126651+8
CVE-2026-84015 Remote Access Point-to-Point Protocol (PPP) EAP-TLS Remote Code Execution VulnerabilityRemote Access Point-to-Point Protocol (PPP) EAP-TLS Important 9.80.9%RCENetwork
KB5126646KB5126651+8
CVE-2026-85792 Windows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityWindows Routing and Remote Access Service (RRAS) Important 9.80.9%RCENetwork
KB5126646KB5126651+8
CVE-2026-85806 Network Policy Server (NPS) Remote Code Execution VulnerabilityNetwork Policy Server (NPS) Important 9.80.9%RCENetwork Revised 27 Oct
KB5126646KB5126651+8
CVE-2026-85809 Windows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityWindows Routing and Remote Access Service (RRAS) Important 9.80.9%RCENetwork
KB5126646KB5126651+8
CVE-2026-85814 Microsoft Windows Media Foundation Remote Code Execution VulnerabilityMicrosoft Windows Media Foundation Important 9.80.9%RCENetwork Revised 4 Nov
KB5126646KB5126651+8
CVE-2026-85928 Windows Volume Manager Extension Driver Remote Code Execution VulnerabilityWindows Volume Manager Extension Driver Important 9.80.6%RCENetwork
KB5126646KB5126651+8
CVE-2026-88102 Microsoft Failover Cluster Remote Code Execution VulnerabilityWindows Failover Cluster Important 9.80.6%RCENetwork
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 16:19 UTC · 274 of 275 readable · 273 fully read · documentation 469/469 current

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