Firetruck

CVE-2026-81963

KEV
Updated Oct 31, 2026 · PUBLISHED
View KEV entry →

Description

Microsoft Windows Update Stack contains a link following vulnerability that allows a local attacker to escalate privileges locally up to SYSTEM.

Full record on cve.org →

Affected packages

PackageVendor / ProductVersion rangeStatus
Windows 11 version 23H2Microsoft / Windows 11 version 23H2>= 10.0.22631.0, < 10.0.22631.7582affected
Windows 11 Version 23H2Microsoft / Windows 11 Version 23H2>= 10.0.22631.0, < 10.0.22631.7582affected
Windows 11 Version 24H2Microsoft / Windows 11 Version 24H2>= 10.0.26100.0, < 10.0.26100.9445affected
Windows 11 Version 25H2Microsoft / Windows 11 Version 25H2>= 10.0.26200.0, < 10.0.26200.9445affected
Windows 11 version 26H1Microsoft / Windows 11 version 26H1>= 10.0.28000.0, < 10.0.28000.2954affected
Windows Server 2025Microsoft / Windows Server 2025>= 10.0.26100.0, < 10.0.26100.33438affected
Windows Server 2025 (Server Core installation)Microsoft / Windows Server 2025 (Server Core installation)>= 10.0.26100.0, < 10.0.26100.33438affected