Windows Kernel Elevation of Privilege Vulnerability
CVE-2026-96913
Summary
Use after free in Microsoft QUIC allows an unauthorized attacker to disclose information over a network.
Products covered
Windows 11 Version 26H2 for ARM64-based Systems
Windows 11 Version 26H2 for x64-based Systems
Microsoft Visual Studio 2026 version 18.10
Microsoft Visual Studio 2022 version 17.14
Microsoft.Native.Quic.MsQuic.Schannel on .NET 10.0 installed on Windows
Microsoft.Native.Quic.MsQuic.Schannel on .NET 11.0 installed on Windows
Microsoft.Native.Quic.MsQuic.Schannel on .NET 8.0 installed on Windows
Microsoft.Native.Quic.MsQuic.Schannel on .NET 9.0 installed on Windows
Show 12 more products
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
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 Server 2025
Windows 11 version 26H1 for x64-based Systems
Windows 11 Version 26H1 for ARM64-based Systems
Remediation
Release Notes Install KB5127648. Install KB5126655. Install KB5126646. Install KB5126653. Install KB5127646.
Vendor-listed fixes
10.0.26300.9711
18.10.4
17.14.42
2.6.2
10.0.20348.5761
10.0.26100.33650
10.0.26200.9711
10.0.22631.7652
Show 2 more fixes
10.0.26100.9711
10.0.28000.3231
CVEs in this advisory 1
Update history
What changed in later vendor updates
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- The vendor changed the advisory's last-updated date.
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.
- Updated by Microsoft Security Response Center
The vendor changed the advisory after it was first published.
- Confirmed at the source
Our collector saw this advisory during a later source check.