CVE-2025-50054 Memory corruption in ovpn-dco-win
A local attacker can crash the system by sending an oversized control message to the OpenVPN Windows kernel 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-2025-50054?
CVE-2025-50054 is a medium-severity memory corruption vulnerability in OpenVPN ovpn-dco-win, published on 20 Jun 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Buffer overflow in OpenVPN ovpn-dco-win version 1.3.0 and earlier and version 2.5.8 and earlier allows a local user process to send a too large control message buffer to the kernel driver resulting in a system crash
Which versions are affected by CVE-2025-50054?
It affects 1 product.
Products include Openvpn Ovpn-Dco-Win.
How do I fix CVE-2025-50054?
No fix has been published for CVE-2025-50054 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-50054 being exploited?
There is no known exploitation of CVE-2025-50054 in the wild and no public exploit code.
Other vulnerabilities in OpenVPN ovpn-dco-win
Sources
Also known as GHSA-c5v3-f4mm-7xmw.