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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-2026-100214 Microsoft Dynamics 365 Business Central Remote Code Execution VulnerabilityDynamics Business Central Important 8.82.1%RCENetwork
—
CVE-2026-102203 RPC Runtime Remote Code Execution VulnerabilityRPC Runtime Important 8.80.9%RCENetwork
KB5126646KB5126651+8
CVE-2026-102235 Visual Studio Code Remote Code Execution VulnerabilityVisual Studio Code Important 8.80.7%RCENetwork
—
CVE-2026-102849 Microsoft Office Access Remote Code Execution VulnerabilityMicrosoft Office Access Important 8.80.8%RCENetwork
—
CVE-2026-102850 Microsoft Office Access Remote Code Execution VulnerabilityMicrosoft Office Access Important 8.80.8%RCENetwork
—
CVE-2026-102858 Microsoft Office OneNote Remote Code Execution VulnerabilityMicrosoft Office OneNote Important 8.80.9%RCENetwork Revised 15 Oct
—
CVE-2026-102870 ASP.NET Core Remote Code Execution VulnerabilityASP.NET Core Important 8.80.9%RCENetwork Revised 25 Oct
KB5133966
CVE-2026-103572 Visual Studio Tools for Applications and SQL Server Management Studio Remote Code Execution VulnerabilityVisual Studio Tools for Applications and SQL Server Management Studio Important 8.81.0%RCENetwork Revised 16 Oct
—
CVE-2026-103575 Remote Desktop Client Remote Code Execution VulnerabilityRemote Desktop Client Important 8.80.9%RCENetwork
KB5126646KB5126651+8
CVE-2026-105591 Microsoft Office Access Remote Code Execution VulnerabilityMicrosoft Office Access Important 8.80.8%RCENetwork
—
CVE-2026-105593 Microsoft Office Access Remote Code Execution VulnerabilityMicrosoft Office Access Important 8.80.8%RCENetwork
—
CVE-2026-105595 Microsoft Office Access Remote Code Execution VulnerabilityMicrosoft Office Access Important 8.80.8%RCENetwork
—

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 17:22 UTC · 274 of 275 readable · 273 fully read · documentation 469/469 current

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