CVE-2026-6799 Comfast CF-N1-S Endpoint mbox-config command injection

Medium 5.3 Published 21 Apr 2026 Updated 22 Apr 2026

Remote attackers can execute arbitrary commands on Comfast CF-N1-S devices via the mbox-config endpoint due to improper input validation.

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-2026-6799?

CVE-2026-6799 is a medium-severity command injection vulnerability in Comfast CF-N1-S, published on 21 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A security flaw has been discovered in Comfast CF-N1-S 2.6.0.1. Affected by this issue is some unknown functionality of the file /cgi-bin/mbox-config?method=SET&section=ping_config of the component Endpoint. Performing a manipulation of the argument destination results in command injection. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-77, CWE-74

Which versions are affected by CVE-2026-6799?

How do I fix CVE-2026-6799?

No fix has been published for CVE-2026-6799 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-2026-6799 being exploited?

There is no known exploitation of CVE-2026-6799 in the wild and no public exploit code.

Sources

Also known as GHSA-3h35-4gph-x5jr.