CVE-2026-82312 Denial of service in OpenVPN
Local authenticated users can cause a denial of service in OpenVPN on Windows due to insecure permissions on named IPC objects.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-82312?
CVE-2026-82312 is a low-severity denial of service vulnerability in OpenVPN, published on 7 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
OpenVPN 2.0.0 through 2.6.22 and 2.7_alpha1 through 2.7.6 on Windows allows local authenticated users to cause a denial of service via a NULL DACL on named IPC objects
Which versions are affected by CVE-2026-82312?
How do I fix CVE-2026-82312?
No fix has been published for CVE-2026-82312 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-82312 being exploited?
There is no known exploitation of CVE-2026-82312 in the wild and no public exploit code.
Sources
Also known as GHSA-j6h9-44fx-3m85.