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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-2026-83723 Windows Event Logging Service Information Disclosure VulnerabilityWindows Event Logging Service Important 5.50.5%Information DisclosureLocal
KB5126646KB5126651+8
CVE-2026-83733 Windows Print Spooler Components Information Disclosure VulnerabilityWindows Print Spooler Components Important 5.50.5%Information DisclosureLocal
KB5126646KB5126651+8
CVE-2026-83737 Windows NTFS Information Disclosure VulnerabilityWindows NTFS Important 5.50.5%Information DisclosureLocal
KB5126646KB5126651+8
CVE-2026-83747 Windows Error Reporting Information Disclosure VulnerabilityWindows Error Reporting Important 5.50.5%Information DisclosureLocal
KB5126646KB5126651+8
CVE-2026-83755 Win32k Information Disclosure VulnerabilityWindows Win32K Important 5.50.5%Information DisclosureLocal
KB5126646KB5126651+8
CVE-2026-83760 Microsoft Bluetooth Driver Information Disclosure VulnerabilityMicrosoft Bluetooth Driver Important 5.50.4%Information DisclosureLocal
KB5126646KB5126651+6
CVE-2026-83764 Windows Clipboard User Service Information Disclosure VulnerabilityWindows Clipboard User Service Important 5.50.3%Information DisclosureLocal
KB5126646KB5126651+5
CVE-2026-83765 Windows DWM Core Library Information Disclosure VulnerabilityWindows DWM Core Library Important 5.50.4%Information DisclosureLocal
KB5126646KB5126651+7
CVE-2026-83773 Windows MIDI Service Module Information Disclosure VulnerabilityWindows MIDI Service Module Important 5.50.9%Information DisclosureLocal
KB5127646KB5127648
CVE-2026-83794 Windows Portable Device MTP Driver Information Disclosure VulnerabilityWindows Portable Device MTP Driver Important 5.50.4%Information DisclosureLocal
KB5126646KB5126651+8
CVE-2026-83835 Windows Common Log File System Driver Information Disclosure VulnerabilityWindows Common Log File System Driver Important 5.50.9%Information DisclosureLocal
KB5126646KB5126651+8
CVE-2026-83849 Windows Hello Information Disclosure VulnerabilityWindows Hello Important 5.50.4%Information DisclosureLocal
KB5126653KB5126657+2

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 21:06 UTC · 274 of 275 readable · 273 fully read · documentation 469/469 current

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