Incorrect permission assignment for critical resource in OpenVPN Server - CVE-2026-82312
Published: September 5, 2026
Vulnerability identifier: #VU147008
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-82312
CWE-ID: CWE-732
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to incorrect permission assignment for critical resources in the Windows service exit event and netsh.exe guard semaphore when OpenVPN creates system objects with a NULL DACL. A local user can block the netsh semaphore or send events to cause a denial of service.
Only setups not using the interactive service, or using the automatic service to start or stop OpenVPN, are affected.
Affected software
OpenVPN Server
How to mitigate CVE-2026-82312
Install security update from vendor's website.
OpenVPN Server - update to 2.7.7