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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

349 matches · most urgent first CSVText
CVE Vulnerability Severity CVSSEPSSImpact StatusFixed by
CVE-2026-83836 Windows Event Tracing Remote Code Execution VulnerabilityWindows Event Tracing Important 7.80.5%RCELocal
KB5126646KB5126651+8
CVE-2026-83919 Microsoft Internet Messaging API Remote Code Execution VulnerabilityMicrosoft Internet Messaging API Important 7.80.3%RCELocal Revised 10 Nov
KB5126646KB5126651+8
CVE-2026-83931 Windows Hyper-V Remote Code Execution VulnerabilityWindows Hyper-V Important 7.80.3%RCELocal
KB5126646KB5126653+3
CVE-2026-85874 Windows Message Queuing Queue Manager Remote Code Execution VulnerabilityWindows Message Queuing Queue Manager Important 7.80.4%RCELocal
KB5126646KB5126651+8
CVE-2026-96867 Windows NTFS Remote Code Execution VulnerabilityWindows NTFS Important 7.80.3%RCELocal
KB5126646KB5126651+8
CVE-2026-96953 Windows Universal Disk Format File System Driver (UDFS) Remote Code Execution VulnerabilityWindows Universal Disk Format File System Driver (UDFS) Important 7.80.3%RCELocal
KB5126646KB5126651+8
CVE-2026-96996 Microsoft Office Word Remote Code Execution VulnerabilityMicrosoft Office Word Important 7.80.3%RCELocal
—
CVE-2026-97001 Microsoft Office Word Remote Code Execution VulnerabilityMicrosoft Office Word Important 7.80.4%RCELocal Revised 15 Oct
—
CVE-2026-97009 Microsoft Office Excel Remote Code Execution VulnerabilityMicrosoft Office Excel Important 7.80.3%RCELocal
—
CVE-2026-105592 Microsoft Office Access Remote Code Execution VulnerabilityMicrosoft Office Access Important 7.50.6%RCENetwork
—
CVE-2026-105599 Microsoft Office PowerPoint Remote Code Execution VulnerabilityMicrosoft Office PowerPoint Important 7.50.6%RCENetwork Revised 15 Oct
—
CVE-2026-105714 Microsoft Office Access Remote Code Execution VulnerabilityMicrosoft Office Access Important 7.50.6%RCENetwork
—

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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