CVE-2022-26413 Command injection in VMG3312-T20A firmware

High 8.0 Published 11 Apr 2022 Updated 3 Aug 2024

A local authenticated attacker can execute arbitrary OS commands on Zyxel VMG3312-T20A routers via the LAN interface.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2022-26413?

CVE-2022-26413 is a high-severity command injection vulnerability in Zyxel VMG3312-T20A firmware, published on 11 Apr 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A command injection vulnerability in the CGI program of Zyxel VMG3312-T20A firmware version 5.30(ABFX.5)C0 could allow a local authenticated attacker to execute arbitrary OS commands on a vulnerable device via a LAN interface.

Weakness: CWE-78

Which versions are affected by CVE-2022-26413?

It affects 32 products.

Products include Zyxel Ax7501-B0 Firmware, Zyxel Dx5401-B0 Firmware, Zyxel Emg3525-T50b Firmware, Zyxel Emg5523-T50b Firmware, Zyxel Emg5723-T50k Firmware, Zyxel Emg6726-B10a Firmware and 26 more.

How do I fix CVE-2022-26413?

No fix has been published for CVE-2022-26413 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-2022-26413 being exploited?

There is no known exploitation of CVE-2022-26413 in the wild and no public exploit code.

Sources

Also known as GHSA-w59x-755c-j5ff.