Stack-based buffer overflow in Microsoft Windows and Windows Server - CVE-2026-105581
Published: November 10, 2026
Vulnerability identifier: #VU164693
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-105581
CWE-ID: CWE-121
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to escalate privileges to those of Desktop Window Manager outside an AppContainer.
The vulnerability exists due to a stack-based buffer overflow in Desktop Window Manager when processing specially crafted data sent to the desktop compositor. A local user can run a malicious application locally inside an AppContainer and send specially crafted data to gain Desktop Window Manager privileges outside that AppContainer.
Affected software
Microsoft Windows
Windows Server
Windows Server
How to mitigate CVE-2026-105581
Install security update from vendor's website.
Microsoft Windows - addressed in versions 11 23H2 10.0.22631.7711, 11 24H2 10.0.26100.9911, 11 24H2 10.0.26100.9974, 11 25H2 10.0.26200.9911, 11 25H2 10.0.26200.9974, 11 26H1 10.0.28000.3501
Windows Server - addressed in versions 2022 10.0.20348.5870, 2025 10.0.26100.33730, 2025 10.0.26100.33822
Windows Server - addressed in versions 2022 10.0.20348.5870, 2025 10.0.26100.33730, 2025 10.0.26100.33822