CVE-2026-12814 Comfast CF-WR631AX V3 API Endpoint mbox-config system os command injection
Remote attackers can execute arbitrary OS commands via the ping_config API endpoint in Comfast CF-WR631AX V3 routers.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-12814?
CVE-2026-12814 is a medium-severity command injection vulnerability in Comfast CF-WR631AX V3, published on 21 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A flaw has been found in Comfast CF-WR631AX V3 up to 2.7.0.8. This issue affects the function system of the file /cgi-bin/mbox-config?section=ping_config of the component API Endpoint. This manipulation of the argument destination causes os command injection. The attack is possible to be carried out remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-12814?
How do I fix CVE-2026-12814?
No fix has been published for CVE-2026-12814 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-2026-12814 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-12814 exists.
Sources
Also known as GHSA-fvx9-6cqj-p3f8.