.NET Denial of Service Vulnerability
CVE-2026-120796
Summary
Double free in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.
Products covered
Windows 11 version 26H1 for x64-based Systems
Windows 11 Version 26H1 for ARM64-based Systems
Remediation
Install KB5129194.
Vendor-listed fixes
10.0.28000.2956
CVEs in this advisory 1
Update history
What changed in later vendor updates
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Updates
- Published by Microsoft Security Response Center
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- Updated by Microsoft Security Response Center
The vendor changed the advisory after it was first published.
- Added to SecurityAlert
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