CVE-2026-13379 Denial of service in OpenVPN
Remote attackers can crash the OpenVPN service or pollute DNS state via crafted search domains during disconnection.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-13379?
CVE-2026-13379 is a medium-severity denial of service vulnerability in OpenVPN, published on 30 Jul 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
The Windows interactive service in OpenVPN 2.7_alpha1 through 2.7.4 allows remote attackers to cause persistent DNS state pollution or a service crash via a crafted search domain during the disconnection process
Which versions are affected by CVE-2026-13379?
It affects 1 product.
Products include Openvpn Openvpn.
How do I fix CVE-2026-13379?
Upgrade to a fixed version.
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-2026-13379 being exploited?
There is no known exploitation of CVE-2026-13379 in the wild and no public exploit code.
Other vulnerabilities in OpenVPN
Sources
Also known as GHSA-hpxm-29ww-fvf4.