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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

72 matches · most urgent first CSVText
CVE Vulnerability Severity CVSSEPSSImpact StatusFixed by
CVE-2026-88129 Role: DNS Server Denial of Service VulnerabilityRole: DNS Server Important 6.51.2%DoSNetwork
KB5126646KB5126651+4
CVE-2026-88130 Role: DNS Server Denial of Service VulnerabilityRole: DNS Server Important 6.51.2%DoSNetwork
KB5126646KB5126651+4
CVE-2026-70162 .NET Denial of Service Vulnerability.NET Important 5.90.9%DoSNetwork Revised 16 Oct
—
CVE-2026-70196 ASP.NET Core Denial of Service VulnerabilityASP.NET Core Important 5.90.9%DoSNetwork
KB5130034KB5130035+1
CVE-2026-88099 Windows Failover Cluster Denial of Service VulnerabilityWindows Failover Cluster Important 5.90.8%DoSNetwork
KB5126646KB5126651+1
CVE-2026-96300 RPC Endpoint Mapper Service Denial of Service VulnerabilityRPC Endpoint Mapper Service Important 5.90.9%DoSNetwork
KB5126646KB5126651+8
CVE-2026-69978 Microsoft Windows VMSwitch Denial of Service VulnerabilityWindows VMSwitch Important 5.60.4%DoSLocal
KB5126646KB5126651+5
CVE-2026-70201 Windows DHCP Server Denial of Service VulnerabilityWindows DHCP Server Important 5.50.5%DoSLocal
KB5126646KB5126651+4
CVE-2026-108466 Windows Kernel Denial of Service VulnerabilityWindows Kernel Important 5.30.7%DoSNetwork
KB5126646KB5126651+8
CVE-2026-70025 Windows Netlogon Denial of Service VulnerabilityWindows Netlogon Important 5.31.1%DoSNetwork
KB5126646KB5126651+8
CVE-2026-88084 Microsoft SQL Server Denial of Service VulnerabilitySQL Server Important 5.30.7%DoSNetwork
KB5128494KB5128495
CVE-2026-94520 Microsoft SQL Server Denial of Service VulnerabilitySQL Server Important 4.90.8%DoSNetwork
KB5126967KB5129299+7

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 19:00 UTC · 274 of 275 readable · 273 fully read · documentation 469/469 current

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