CVE-2026-1149 Totolink LR350 POST Request cstecgi.cgi setDiagnosisCfg command injection

Medium 5.3 Published 19 Jan 2026 Updated 23 Feb 2026

Remote attackers can execute arbitrary commands on Totolink LR350 routers via the setDiagnosisCfg function in cstecgi.cgi.

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-2026-1149?

CVE-2026-1149 is a medium-severity command injection vulnerability in Totolink LR350, published on 19 Jan 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability was identified in Totolink LR350 9.3.5u.6369_B20220309. This issue affects the function setDiagnosisCfg of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument ip leads to command injection. The attack can be initiated remotely. The exploit is publicly available and might be used.

Weakness: CWE-77, CWE-74

Which versions are affected by CVE-2026-1149?

It affects 1 product.

Products include Totolink Lr350 Firmware.

How do I fix CVE-2026-1149?

No fix has been published for CVE-2026-1149 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-2026-1149 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-1149 exists.

Sources

Also known as GHSA-m898-gr28-h7qx.