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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-2026-70186 ASP.NET Core Denial of Service VulnerabilityASP.NET Core Important 7.51.0%DoSNetwork Revised 16 Oct
KB5130034KB5130035+1
CVE-2026-84008 .NET Denial of Service Vulnerability.NET Important 7.51.0%DoSNetwork Revised 15 Oct
KB5126868KB5127660+17
CVE-2026-96232 .NET Information Disclosure Vulnerability.NET Important 7.50.9%Information DisclosureNetwork Revised 15 Oct
KB5130034KB5130035+1
CVE-2026-96233 ASP.NET Core Denial of Service VulnerabilityASP.NET Core Important 7.51.0%DoSNetwork Revised 15 Oct
KB5126868KB5127660+20
CVE-2026-96236 ASP.NET Core Denial of Service VulnerabilityASP.NET Core Important 7.51.1%DoSNetwork Revised 15 Oct
KB5130034KB5130035+1
CVE-2026-96237 .NET Remote Code Execution Vulnerability.NET Important 7.50.6%RCENetwork Revised 16 Oct
KB5130034KB5130035+1
CVE-2026-96958 .NET Denial of Service Vulnerability.NET Important 7.51.2%DoSNetwork Revised 15 Oct
KB5126868KB5127660+17
CVE-2026-96959 .NET Denial of Service Vulnerability.NET Important 7.51.0%DoSNetwork Revised 15 Oct
KB5126868KB5127660+17
CVE-2026-96960 .NET Denial of Service Vulnerability.NET Important 7.51.2%DoSNetwork
KB5126868KB5127660+17
CVE-2026-97788 Active Directory Federation Services (AD FS) Information Disclosure VulnerabilityActive Directory Federation Services (AD FS) Important 7.50.9%Information DisclosureNetwork
KB5126646KB5126651+26
CVE-2026-97801 .NET Framework Tampering Vulnerability.NET Framework Important 7.50.7%TamperingNetwork
KB5126868KB5127660+17
CVE-2026-102234 Visual Studio Code Security Feature Bypass VulnerabilityVisual Studio Code Important 7.40.8%SFBNetwork
—

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