Microsoft Office OneNote Remote Code Execution Vulnerability
CVE-2026-126526
Summary
Use after free in Desktop Window Manager allows an authorized attacker to elevate privileges locally.
Products covered
Windows Server 2022
Windows Server 2022 (Server Core installation)
Windows 10 Version 21H2 for 32-bit Systems
Windows 10 Version 21H2 for ARM64-based Systems
Windows 10 Version 21H2 for x64-based Systems
Windows 10 Version 22H2 for x64-based Systems
Windows 10 Version 22H2 for ARM64-based Systems
Windows 10 Version 22H2 for 32-bit Systems
Show 3 more products
Windows 11 Version 23H2 for ARM64-based Systems
Windows 11 Version 23H2 for x64-based Systems
Windows Server 2022, 23H2 Edition (Server Core installation)
Remediation
Install KB5082142. Install KB5082200. Install KB5082052. Install KB5082060.
Vendor-listed fixes
10.0.20348.5020
10.0.19044.7184
10.0.19045.7184
10.0.22631.6936
10.0.25398.2274
CVEs in this advisory 1
Updates
- Published by Microsoft Security Response Center
The publication date reported by the vendor.
- Added to SecurityAlert
We collected the advisory from the official source.
- Confirmed at the source
Our collector saw this advisory during a later source check.