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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-2026-70170 Windows Kernel Denial of Service VulnerabilityWindows Kernel Important 6.51.2%DoSNetwork Revised 16 Oct
KB5126646KB5126651+8
CVE-2026-70248 Windows Hyper-V Denial of Service VulnerabilityWindows Hyper-V Important 6.50.4%DoSLocal
KB5126646KB5126651+6
CVE-2026-83636 Windows Hyper-V Denial of Service VulnerabilityWindows Hyper-V Important 6.50.4%DoSLocal
KB5126646KB5126653+4
CVE-2026-83648 Windows Active Directory Domain Services Denial of Service VulnerabilityActive Directory Domain Services Important 6.51.2%DoSNetwork
KB5126646KB5126653+4
CVE-2026-83649 Windows Local Security Authority Subsystem Service (LSASS) Denial of Service VulnerabilityWindows Local Security Authority Subsystem Service (LSASS) Important 6.51.2%DoSNetwork
KB5126646KB5126651+6
CVE-2026-83667 Windows Active Directory Domain Services Denial of Service VulnerabilityActive Directory Domain Services Important 6.51.2%DoSNetwork
KB5126646KB5126651+8
CVE-2026-83685 Windows Internet Key Exchange (IKE) Extension Denial of Service VulnerabilityWindows IKE Extension Important 6.51.3%DoSNetwork
KB5126646KB5126651+8
CVE-2026-83703 Windows Wi-Fi Driver Denial of Service VulnerabilityWindows Wi-Fi Driver Important 6.50.7%DoSAdjacent
KB5126646KB5126651+8
CVE-2026-85859 Windows Message Queuing Queue Manager Denial of Service VulnerabilityWindows Message Queuing Queue Manager Important 6.50.8%DoSNetwork
KB5126646KB5126651+8
CVE-2026-88122 Role: DNS Server Denial of Service VulnerabilityRole: DNS Server Important 6.51.0%DoSNetwork
KB5126646KB5126651+4
CVE-2026-88123 Role: DNS Server Denial of Service VulnerabilityRole: DNS Server Important 6.51.2%DoSNetwork
KB5126646KB5126651+4
CVE-2026-88125 Role: DNS Server Denial of Service VulnerabilityRole: DNS Server Important 6.51.2%DoSNetwork
KB5126646KB5126651+4

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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