.NET Denial of Service Vulnerability
CVE-2026-120796
Summary
Out-of-bounds read in Remote Desktop Client allows an unauthorized attacker to disclose information over a network.
Products covered
Windows 10 Version 1607 for 32-bit Systems
Windows 10 Version 1607 for x64-based Systems
Windows Server 2016
Windows Server 2016 (Server Core installation)
Windows 10 Version 1809 for 32-bit Systems
Windows 10 Version 1809 for x64-based Systems
Windows Server 2019
Windows Server 2019 (Server Core installation)
Show 21 more products
Windows 10 Version 21H2 for 32-bit Systems
Windows 10 Version 21H2 for x64-based Systems
Windows 10 Version 21H2 for ARM64-based Systems
Windows 10 Version 22H2 for 32-bit Systems
Windows 10 Version 22H2 for x64-based Systems
Windows 10 Version 22H2 for ARM64-based Systems
Windows Server 2022
Windows Server 2022 (Server Core installation)
Windows 11 Version 23H2 for x64-based Systems
Windows 11 Version 23H2 for ARM64-based Systems
Windows 11 Version 24H2 for x64-based Systems
Windows 11 Version 24H2 for ARM64-based Systems
Windows 11 Version 25H2 for x64-based Systems
Windows 11 Version 25H2 for ARM64-based Systems
Windows 11 Version 26H2 for x64-based Systems
Windows App Client for Windows Desktop
Windows 11 Version 26H2 for ARM64-based Systems
Windows Server 2025
Windows Server 2025 (Server Core installation)
Windows 11 version 26H1 for x64-based Systems
Windows 11 Version 26H1 for ARM64-based Systems
Remediation
Release Notes Install KB5131291. Install KB5131085. Install KB5131096. Install KB5131090. Install KB5131087. Install KB5132061. Install KB5132043. Install KB5131080. Install KB5131077. Install KB5132059.
Vendor-listed fixes
10.0.14393.9688
10.0.17763.9487
10.0.19044.7846
10.0.19045.7846
10.0.20348.5870
10.0.22631.7711
10.0.26100.9974
10.0.26100.9911
Show 8 more fixes
10.0.26200.9974
10.0.26200.9911
10.0.26300.9974
10.0.26300.9911
2.0.1489.0
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.
- Confirmed at the source
Our collector saw this advisory during a later source check.