CVE-2025-11121 Tenda AC18 AdvSetLanip command injection

Medium 5.3 Published 28 Sep 2025 Updated 29 Sep 2025

Remote attackers can execute arbitrary commands on Tenda AC18 routers via the AdvSetLanip endpoint, posing a critical security risk.

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-2025-11121?

CVE-2025-11121 is a medium-severity command injection vulnerability in Tenda Ac18 Firmware, published on 28 Sep 2025. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A security vulnerability has been detected in Tenda AC18 15.03.05.19. The impacted element is an unknown function of the file /goform/AdvSetLanip. The manipulation of the argument lanIp leads to command injection. The attack can be initiated remotely. The exploit has been disclosed publicly and may be used.

Weakness: CWE-77, CWE-74

Which versions are affected by CVE-2025-11121?

It affects 1 product.

Products include Tenda Ac18 Firmware.

How do I fix CVE-2025-11121?

No fix has been published for CVE-2025-11121 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-2025-11121 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-11121 exists.

All Tenda Ac18 Firmware vulnerabilities

Sources

Also known as GHSA-m2xx-gf2q-4rwx.