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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

CVEs · all collected releases

2592 matches in Windows · most urgent first CSVText
CVE Vulnerability Severity CVSSEPSSImpact StatusFixed by
CVE-2026-83664 Windows Portable Device File System Driver Information Disclosure VulnerabilityWindows Portable Device File System Driver Important 5.50.4%Information DisclosureLocal Fix has a known issue
KB5126646KB5126651+8
CVE-2026-83668 Windows WLAN Service Information Disclosure VulnerabilityWindows WLAN Service Important 5.50.4%Information DisclosureLocal Fix has a known issue
KB5126646KB5126651+8
CVE-2026-83686 Microsoft Windows Search Component Information Disclosure VulnerabilityMicrosoft Windows Search Component Important 5.50.5%Information DisclosureLocal Fix has a known issue
KB5126646KB5126651+8
CVE-2026-83695 Windows Event Logging Service Information Disclosure VulnerabilityWindows Event Logging Service Important 5.50.5%Information DisclosureLocal Fix has a known issue
KB5126646KB5126651+8
CVE-2026-83705 HTTP.sys Information Disclosure VulnerabilityWindows HTTP.sys Important 5.50.9%Information DisclosureLocal Fix has a known issue
KB5126646KB5126651+8
CVE-2026-83713 Windows Universal Disk Format File System Driver (UDFS) Information Disclosure VulnerabilityWindows Universal Disk Format File System Driver (UDFS) Important 5.50.9%Information DisclosureLocal Fix has a known issue
KB5126646KB5126651+8
CVE-2026-83714 HTTP.sys Information Disclosure VulnerabilityWindows HTTP.sys Important 5.50.4%Information DisclosureLocal Fix has a known issue
KB5126646KB5126651+8
CVE-2026-83719 Servicing Stack Updates Information Disclosure VulnerabilityServicing Stack Updates Important 5.50.4%Information DisclosureLocal Fix has a known issue
KB5126646KB5126651+5
CVE-2026-83723 Windows Event Logging Service Information Disclosure VulnerabilityWindows Event Logging Service Important 5.50.5%Information DisclosureLocal Fix has a known issue
KB5126646KB5126651+8
CVE-2026-83733 Windows Print Spooler Components Information Disclosure VulnerabilityWindows Print Spooler Components Important 5.50.5%Information DisclosureLocal Fix has a known issue
KB5126646KB5126651+8
CVE-2026-83736 Windows Kernel Elevation of Privilege VulnerabilityWindows Kernel Important 5.50.5%EoPLocal Fix has a known issue
KB5126646KB5126653+4
CVE-2026-83737 Windows NTFS Information Disclosure VulnerabilityWindows NTFS Important 5.50.5%Information DisclosureLocal Fix has a known issue
KB5126646KB5126651+8

Advisories

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 14 Nov 02:55 UTC · 274 of 275 readable · 270 fully read · documentation 461/469 current

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