CVE-2026-2823 Comfast CF-E7 webmggnt mbox-config sub_41ACCC command injection

Medium 5.3 Published 20 Feb 2026 Updated 23 Feb 2026

Remote attackers can execute arbitrary commands on Comfast CF-E7 routers via the web management interface 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-2026-2823?

CVE-2026-2823 is a medium-severity command injection vulnerability in Comfast CF-E7, published on 20 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability was detected in Comfast CF-E7 2.6.0.9. The impacted element is the function sub_41ACCC of the file /cgi-bin/mbox-config?method=SET&section=ntp_timezone of the component webmggnt. Performing a manipulation of the argument timestr results in command injection. The attack is possible to be carried out remotely. The exploit is now public and may be used. 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-2026-2823?

It affects 1 product.

Products include Comfast Cf-E7 Firmware.

How do I fix CVE-2026-2823?

No fix has been published for CVE-2026-2823 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-2026-2823 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-2823 exists.

CVE-2026-2824 Comfast CF-E7 webmggnt mbox-config sub_441CF4 command injection Medium 5.3

Sources

Also known as GHSA-6wwj-pg79-rf37.