Google: CVE-2026-111497 Buffer overflow vulnerability in the Brotli decoder
CVE-2026-111497
Summary
Access of resource using incompatible type ('type confusion') in Windows Hyper-V allows an unauthorized attacker to execute code locally.
Products covered
Windows Server 2022
Windows Server 2022 (Server Core installation)
Windows 10 Version 21H2 for x64-based Systems
Windows 10 Version 22H2 for x64-based Systems
Windows Server 2025 (Server Core installation)
Windows 11 Version 25H2 for x64-based Systems
Windows 11 Version 23H2 for x64-based Systems
Windows 11 Version 24H2 for x64-based Systems
Show 2 more products
Windows Server 2025
Windows 11 version 26H1 for x64-based Systems
Remediation
Install KB5094128. Install KB5094127. Install KB5094125. Install KB5094126. Install KB5093998. Install KB5095051.
Vendor-listed fixes
10.0.20348.5256
10.0.19044.7417
10.0.19045.7417
10.0.26100.32995
10.0.26200.8655
10.0.22631.7219
10.0.26100.8655
10.0.28000.2269
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.