CVE-2026-18601 GL.iNet GL-MT3000 ovpn-client.so Native Plugin glc ovpn-client.check_config command injection
Remote attackers can execute arbitrary commands on GL.iNet GL-MT3000 routers via the ovpn-client plugin's check_config function.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-18601?
CVE-2026-18601 is a critical command injection vulnerability in GL.iNet GL-MT3000, published on 3 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was found in GL.iNet GL-MT3000 up to 4.4.5. This impacts the function ovpn-client.check_config of the file /cgi-bin/glc of the component ovpn-client.so Native Plugin. Performing a manipulation of the argument filename results in command injection. Remote exploitation of the attack is possible. The exploit has been made public and could be used. The vendor was contacted early about this disclosure and confirmed the existence of the vulnerability.
Which versions are affected by CVE-2026-18601?
How do I fix CVE-2026-18601?
No fix has been published for CVE-2026-18601 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-18601 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-18601 exists.
Sources
Also known as GHSA-qv2j-hh7r-m4m2.