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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-2026-88115 Windows Server for NFS Remote Code Execution VulnerabilityWindows Server for NFS Important 8.80.7%RCENetwork
KB5126646KB5126651+4
CVE-2026-88116 Windows Domain Name Service Remote Code Execution VulnerabilityRole: DNS Server Important 8.80.7%RCENetwork
KB5126646KB5126651+6
CVE-2026-88136 Web Distributed Authoring and Versioning (WEBDAV) Remote Code Execution VulnerabilityWebDAV Important 8.81.0%RCENetwork
KB5126646KB5126651+8
CVE-2026-88142 Windows Background Intelligent Transfer Service (BITS) Remote Code Execution VulnerabilityWindows Background Intelligent Transfer Service (BITS) Important 8.80.9%RCENetwork
KB5126646KB5126651+8
CVE-2026-88145 Microsoft Office Excel Remote Code Execution VulnerabilityMicrosoft Office Excel Important 8.80.7%RCENetwork Revised 15 Oct
—
CVE-2026-88150 Microsoft Office Word Remote Code Execution VulnerabilityMicrosoft Office Word Important 8.80.8%RCENetwork Revised 15 Oct
—
CVE-2026-88155 Microsoft Office SharePoint Remote Code Execution VulnerabilityMicrosoft Office SharePoint Important 8.80.8%RCENetwork
KB5002927
CVE-2026-88157 Microsoft OpenSSH for Windows Remote Code Execution VulnerabilityOpenSSH for Windows Important 8.80.5%RCENetwork
KB5126646KB5126651+5
CVE-2026-88159 Windows Background Intelligent Transfer Service (BITS) Remote Code Execution VulnerabilityWindows Background Intelligent Transfer Service (BITS) Important 8.81.4%RCENetwork
KB5126646KB5126651+8
CVE-2026-88163 Microsoft Office SharePoint Remote Code Execution VulnerabilityMicrosoft Office SharePoint Important 8.80.9%RCENetwork
KB5002927
CVE-2026-88165 Windows Active Directory Domain Services Remote Code Execution VulnerabilityActive Directory Domain Services Important 8.80.9%RCENetwork
KB5126646KB5126651+8
CVE-2026-88166 Microsoft Office SharePoint Remote Code Execution VulnerabilityMicrosoft Office SharePoint Important 8.80.9%RCENetwork
KB5002927

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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