CVE-2021-42875 Command injection in n/a

Critical 9.8 Published 2 Jun 2022 Updated 9 Jul 2026

Remote attackers can execute arbitrary commands on TOTOLINK EX1200T routers via the setDiagnosisCfg function.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2021-42875?

CVE-2021-42875 is a critical command injection vulnerability in n/a, published on 2 Jun 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

TOTOLINK EX1200T V4.1.2cu.5215 contains a remote command injection vulnerability in the function setDiagnosisCfg of the file lib/cste_modules/system.so to control the ipDoamin.

Weakness: CWE-78

Which versions are affected by CVE-2021-42875?

It affects 1 product.

Products include Totolink Ex1200t Firmware.

How do I fix CVE-2021-42875?

No fix has been published for CVE-2021-42875 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-2021-42875 being exploited?

There is no known exploitation of CVE-2021-42875 in the wild and no public exploit code.

Sources

Also known as GHSA-f94f-phr4-45gf.