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Security

Microsoft security updates and public advisory evidence: affected products, fixing updates, exploitation and source coverage.

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

69 matches in Developer Tools · most urgent first CSVText
CVE Vulnerability Severity CVSSEPSSImpact StatusFixed by
CVE-2026-108398 .NET Framework Security Feature Bypass Vulnerability.NET Framework Important 8.80.8%SFBLocal Disclosed
KB5126868KB5127666+14
CVE-2026-105016 Microsoft QUIC Remote Code Execution VulnerabilityMicrosoft QUIC Critical 9.81.7%RCENetwork
KB5126646KB5126653+5
CVE-2026-96222 Active Directory Federation Services (AD FS) Spoofing VulnerabilityActive Directory Federation Services (AD FS) Critical 7.40.6%SpoofingNetwork Revised 16 Oct
KB5126646KB5126651+21
CVE-2026-102238 Visual Studio Code Remote Code Execution VulnerabilityVisual Studio Code Important 9.60.8%RCENetwork
—
CVE-2026-88092 ASP.NET Core Tampering VulnerabilityASP.NET Core Important 9.40.9%TamperingNetwork
KB5130034KB5130035+1
CVE-2026-70188 ASP.NET Core Security Feature Bypass VulnerabilityASP.NET Core Important 9.10.9%SFBNetwork Revised 15 Oct
KB5130034KB5130035+1
CVE-2026-102235 Visual Studio Code Remote Code Execution VulnerabilityVisual Studio Code Important 8.80.7%RCENetwork
—
CVE-2026-102869 .NET and Visual Studio Elevation of Privilege Vulnerability.NET and Visual Studio Important 8.80.8%EoPNetwork
KB5126868KB5127666+14
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-2026-69370 Visual Studio Code Remote Code Execution VulnerabilityVisual Studio Code Important 8.80.9%RCENetwork
—
CVE-2026-70007 .NET Framework Remote Code Execution Vulnerability.NET Framework Important 8.80.8%RCENetwork Revised 27 Oct
KB5126868KB5127660+20

Advisories · October 2026

MSRC guidance without a CVE of its own · 1 advisory
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 20:03 UTC · 274 of 275 readable · 273 fully read · documentation 469/469 current