.NET Denial of Service Vulnerability
CVE-2026-120796
Summary
Use after free in Windows Shell allows an authorized attacker to elevate privileges locally.
Products covered
Windows 11 Version 26H1 for ARM64-based Systems
Windows 11 version 26H1 for x64-based Systems
Windows Server 2022
Windows Server 2022 (Server Core installation)
Windows Server 2025 (Server Core installation)
Windows 11 Version 25H2 for ARM64-based Systems
Windows 11 Version 25H2 for x64-based Systems
Windows 11 Version 23H2 for ARM64-based Systems
Show 5 more products
Windows 11 Version 23H2 for x64-based Systems
Windows Server 2022, 23H2 Edition (Server Core installation)
Windows 11 Version 24H2 for ARM64-based Systems
Windows 11 Version 24H2 for x64-based Systems
Windows Server 2025
Remediation
Install KB5083768. Install KB5082142. Install KB5082063. Install KB5083769. Install KB5082052. Install KB5082060.
Vendor-listed fixes
10.0.28000.1836
10.0.20348.5020
10.0.26100.32690
10.0.26200.8246
10.0.22631.6936
10.0.25398.2274
10.0.26100.8246
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.