CVE-2022-40100 Command injection in n/a

Critical 9.8 Published 23 Sep 2022 Updated 22 May 2025

Attackers can execute arbitrary commands on Tenda i9 routers via the FormexeCommand function, potentially compromising the device.

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-2022-40100?

CVE-2022-40100 is a critical command injection vulnerability in n/a, published on 23 Sep 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Tenda i9 v1.0.0.8(3828) was discovered to contain a command injection vulnerability via the FormexeCommand function.

Weakness: CWE-77

Which versions are affected by CVE-2022-40100?

It affects 1 product.

Products include Tenda I9 Firmware.

How do I fix CVE-2022-40100?

No fix has been published for CVE-2022-40100 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-2022-40100 being exploited?

There is no known exploitation of CVE-2022-40100 in the wild and no public exploit code.

Sources

Also known as GHSA-89gf-mhc4-x76w.