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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

43 matches · most urgent first CSVText
CVE Vulnerability Severity CVSSEPSSImpact StatusFixed by
CVE-2026-103577 Microsoft QUIC Security Feature Bypass VulnerabilityMicrosoft QUIC Important 7.50.6%SFBNetwork
KB5126646KB5126653+3
CVE-2026-102234 Visual Studio Code Security Feature Bypass VulnerabilityVisual Studio Code Important 7.40.8%SFBNetwork
—
CVE-2026-85922 Azure Key Vault Security Feature Bypass VulnerabilityAzure Key Vault Important 7.40.6%SFBNetwork
—
CVE-2026-87705 Windows Hyper-V Security Feature Bypass VulnerabilityWindows Hyper-V Important 7.40.4%SFBAdjacent
KB5126646KB5126651+8
CVE-2026-102232 Visual Studio Code Security Feature Bypass VulnerabilityVisual Studio Code Important 7.00.3%SFBLocal
—
CVE-2026-59116 Windows Remote Desktop Security Feature Bypass VulnerabilityWindows Remote Desktop Important 6.80.4%SFBNetwork
KB5099414KB5099444+8
CVE-2026-70194 .NET Framework Security Feature Bypass Vulnerability.NET Framework Important 6.50.5%SFBNetwork
—
CVE-2026-85805 Microsoft PowerShell Security Feature Bypass VulnerabilityWindows PowerShell Important 6.50.6%SFBNetwork
KB5126646KB5126651+8
CVE-2026-87714 WebDAV Security Feature Bypass VulnerabilityWebDAV Important 6.50.5%SFBNetwork
KB5126646KB5126651+8
CVE-2026-96238 .NET Security Feature Bypass Vulnerability.NET Important 6.50.3%SFBNetwork Revised 15 Oct
KB5130034KB5130035+1
CVE-2026-96303 Microsoft PowerShell Security Feature Bypass VulnerabilityMicrosoft PowerShell Important 6.50.7%SFBNetwork Revised 22 Oct
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CVE-2026-102851 Visual Studio Code Security Feature Bypass VulnerabilityVisual Studio Code Important 6.10.3%SFBLocal
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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 15:16 UTC · 274 of 275 readable · 273 fully read · documentation 469/469 current