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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

262 matches · most urgent first CSVText
CVE Vulnerability Severity CVSSEPSSImpact StatusFixed by
CVE-2026-70217 Microsoft Office SharePoint Information Disclosure VulnerabilityMicrosoft Office SharePoint Important 4.91.0%Information DisclosureNetwork
KB5002927
CVE-2026-102186 Windows Network File System Information Disclosure VulnerabilityWindows Network File System Important 4.70.4%Information DisclosureLocal
KB5126646KB5126651+8
CVE-2026-69506 Windows Key Storage Provider Information Disclosure VulnerabilityWindows Key Storage Provider Important 4.70.4%Information DisclosureLocal
KB5126646KB5126651+7
CVE-2026-69969 Windows AppX Deployment Service Information Disclosure VulnerabilityWindows AppX Deployment Service Important 4.70.4%Information DisclosureLocal
KB5126646KB5126653+4
CVE-2026-69974 Desktop Window Manager Information Disclosure VulnerabilityDesktop Window Manager Important 4.70.3%Information DisclosureLocal
KB5126646KB5126651+5
CVE-2026-70063 Windows Kernel Information Disclosure VulnerabilityWindows Kernel Important 4.70.4%Information DisclosureLocal
KB5126646KB5126651+8
CVE-2026-70077 Windows Kernel Information Disclosure VulnerabilityWindows Kernel Important 4.70.4%Information DisclosureLocal
KB5126646KB5126651+8
CVE-2026-70195 Windows Ancillary Function Driver for WinSock Information Disclosure VulnerabilityWindows Ancillary Function Driver for WinSock Important 4.70.3%Information DisclosureLocal
KB5126646KB5126651+8
CVE-2026-83504 Windows SmartScreen Information Disclosure VulnerabilityWindows SmartScreen Important 4.70.3%Information DisclosureLocal
KB5122880KB5124008+1
CVE-2026-83582 Windows Graphics Kernel Information Disclosure VulnerabilityWindows Graphics Kernel Important 4.70.4%Information DisclosureLocal
KB5126646KB5126651+8
CVE-2026-83672 Windows Installer Information Disclosure VulnerabilityWindows Installer Important 4.70.7%Information DisclosureLocal
KB5126646KB5126651+8
CVE-2026-83774 Windows Win32 Kernel Subsystem Information Disclosure VulnerabilityWindows Win32 Kernel Subsystem Important 4.70.7%Information DisclosureLocal
KB5126646KB5126651+8

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 22:09 UTC · 274 of 275 readable · 272 fully read · documentation 469/469 current

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