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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-2026-85339 Windows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityWindows Routing and Remote Access Service (RRAS) Important 8.80.5%RCENetwork
KB5126646KB5126651+8
CVE-2026-85817 Microsoft PowerShell Remote Code Execution VulnerabilityWindows PowerShell Important 8.80.7%RCENetwork
KB5126646KB5126651+8
CVE-2026-85890 Microsoft Edge (Chromium-based) Remote Code Execution VulnerabilityMicrosoft Edge (Chromium-based) Important 8.80.6%RCENetwork Revised 26 Oct
—
CVE-2026-85897 Microsoft Edge (Chromium-based) Remote Code Execution VulnerabilityMicrosoft Edge (Chromium-based) Important 8.80.6%RCENetwork Revised 26 Oct
—
CVE-2026-85898 Microsoft Edge (Chromium-based) Remote Code Execution VulnerabilityMicrosoft Edge (Chromium-based) Important 8.80.8%RCENetwork Revised 26 Oct
—
CVE-2026-85900 Microsoft Office SharePoint Remote Code Execution VulnerabilityMicrosoft Office SharePoint Important 8.81.5%RCENetwork
KB5002927
CVE-2026-85903 Windows Domain Name Service Remote Code Execution VulnerabilityRole: DNS Server Important 8.80.7%RCENetwork
KB5126646KB5126651+8
CVE-2026-85931 Windows Distributed File System (DFS) Remote Code Execution VulnerabilityWindows Distributed File System (DFS) Important 8.80.9%RCENetwork
KB5126646KB5126651+8
CVE-2026-85936 Windows Shell Remote Code Execution VulnerabilityWindows Shell Important 8.80.5%RCENetwork
KB5126646KB5126651+8
CVE-2026-87697 .NET Remote Code Execution Vulnerability.NET Important 8.80.8%RCENetwork Revised 15 Oct
KB5130034KB5130035+1
CVE-2026-88112 Windows Domain Name Service Remote Code Execution VulnerabilityRole: DNS Server Important 8.80.7%RCENetwork
KB5126646KB5126651+7
CVE-2026-88114 Windows Domain Name Service Remote Code Execution VulnerabilityRole: DNS Server Important 8.80.7%RCENetwork
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 18:25 UTC · 274 of 275 readable · 273 fully read · documentation 469/469 current

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