CVE-2026-82325 Use after free in ovpn-dco-win
Local authenticated users can crash the system via crafted control messages in the OpenVPN Windows driver.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-82325?
CVE-2026-82325 is a medium-severity use after free vulnerability in OpenVPN ovpn-dco-win, published on 7 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A use-after-free vulnerability in the OpenVPN ovpn-dco-win driver version 2.5.0 through 2.8.6 allows local authenticated users to cause a system crash via crafted control messages
Which versions are affected by CVE-2026-82325?
How do I fix CVE-2026-82325?
No fix has been published for CVE-2026-82325 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-82325 being exploited?
There is no known exploitation of CVE-2026-82325 in the wild and no public exploit code.
Sources
Also known as GHSA-pc42-rjrj-cj9w.