Race condition in Windows Server - CVE-2026-20830
Published: January 13, 2026
Vulnerability identifier: #VU121243
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-2026-20830
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 on the system.
The vulnerability exists due to a race condition in Capability Access Management Service (camsvc). A local user can exploit the race and escalate privileges on the system.
Affected software
Windows Server
How to mitigate CVE-2026-20830
Install updates from vendor's website.
Windows Server - update to 2025 10.0.26100.7623