Windows BitLocker Security Feature Bypass Vulnerability
CVE-2026-97015
Summary
Use after free in Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges locally.
Products covered
Windows Server 2022
Windows Server 2022 (Server Core installation)
Windows 11 Version 23H2 for ARM64-based Systems
Windows 11 Version 23H2 for x64-based Systems
Windows 11 Version 24H2 for ARM64-based Systems
Windows 11 Version 24H2 for x64-based Systems
Windows 11 Version 25H2 for ARM64-based Systems
Windows 11 Version 25H2 for x64-based Systems
Show 6 more products
Windows 11 Version 26H2 for ARM64-based Systems
Windows 11 Version 26H2 for x64-based Systems
Windows Server 2025
Windows Server 2025 (Server Core installation)
Windows 11 Version 26H1 for ARM64-based Systems
Windows 11 version 26H1 for x64-based Systems
Remediation
Install KB5131090. Install KB5131087. Install KB5132061. Install KB5132043. Install KB5131080. Install KB5131077. Install KB5132059.
Vendor-listed fixes
10.0.20348.5870
10.0.22631.7711
10.0.26100.9974
10.0.26100.9911
10.0.26200.9974
10.0.26200.9911
10.0.26300.9974
10.0.26300.9911
Show 3 more fixes
10.0.26100.33822
10.0.26100.33730
10.0.28000.3501
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.