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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-2026-105733 Windows Hyper-V Remote Code Execution VulnerabilityWindows Hyper-V Critical 8.80.3%RCELocal
KB5126646KB5126653+4
CVE-2026-108400 HEVC Video Extensions Remote Code Execution VulnerabilityMicrosoft Windows Codecs Library Critical 8.80.9%RCENetwork
—
CVE-2026-108439 Microsoft Office Word Remote Code Execution VulnerabilityMicrosoft Office Word Critical 8.80.6%RCENetwork
—
CVE-2026-108440 Microsoft Office Word Remote Code Execution VulnerabilityMicrosoft Office Word Critical 8.80.6%RCENetwork
—
CVE-2026-108467 Microsoft PostScript Printer Driver Remote Code Execution VulnerabilityMicrosoft PostScript Printer Driver Critical 8.81.0%RCENetwork
KB5126646KB5126651+8
CVE-2026-70215 Microsoft Office PowerPoint Remote Code Execution VulnerabilityMicrosoft Office PowerPoint Critical 8.80.9%RCENetwork Revised 15 Oct
—
CVE-2026-70250 Windows DHCP Client Remote Code Execution VulnerabilityWindows DHCP Client Critical 8.80.5%RCEAdjacent Revised 28 Oct
KB5126646KB5126651+4
CVE-2026-83934 Windows GDI+ Remote Code Execution VulnerabilityWindows GDI+ Critical 8.80.9%RCENetwork
KB5126646KB5126651+8
CVE-2026-88144 Microsoft Office PowerPoint Remote Code Execution VulnerabilityMicrosoft Office PowerPoint Critical 8.80.9%RCENetwork Revised 15 Oct
—
CVE-2026-96202 Windows Raw Image Extension Remote Code Execution VulnerabilityWindows Raw Image Extension Critical 8.80.9%RCENetwork Revised 26 Oct
—
CVE-2026-96943 Windows Raw Image Extension Remote Code Execution VulnerabilityWindows Raw Image Extension Critical 8.80.6%RCENetwork
—
CVE-2026-96952 Microsoft Windows Media Foundation Remote Code Execution VulnerabilityMicrosoft Windows Media Foundation Critical 8.80.9%RCENetwork
KB5126646KB5126651+5

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 16:19 UTC · 274 of 275 readable · 273 fully read · documentation 469/469 current

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