Race condition in Microsoft Windows and Windows Server - CVE-2026-105546
Published: November 10, 2026
Vulnerability identifier: #VU164670
CSH Severity: Low
CVSS v4: 7.3 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-105546
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to escalate privileges and execute code in the security context of the NT AUTHORITYNetwork Service account.
The vulnerability exists due to improper synchronization in Windows Management Instrumentation when concurrently accessing shared resources. A local user can exploit the race condition to execute code with the privileges of the NT AUTHORITYNetwork Service account.
Successful exploitation requires a memory allocation to fail at a particular point in the affected operation.
Affected software
Microsoft Windows
Windows Server
Windows Server
How to mitigate CVE-2026-105546
Install security update from vendor's website.
Microsoft Windows - addressed in versions 10 21H2 10.0.19044.7846, 10 22H2 10.0.19045.7846, 10 1607 10.0.14393.9688, 10 1809 10.0.17763.9487, 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 2016 10.0.14393.9688, 2019 10.0.17763.9487, 2022 10.0.20348.5870, 2025 10.0.26100.33730, 2025 10.0.26100.33822
Windows Server - addressed in versions 2016 10.0.14393.9688, 2019 10.0.17763.9487, 2022 10.0.20348.5870, 2025 10.0.26100.33730, 2025 10.0.26100.33822