CVE-2019-5156 Command injection in WAGO PFC200 Firmware

High 7.2 Published 10 Mar 2020 Updated 4 Aug 2024

Attackers can inject OS commands via the TimeoutPrepared parameter in firmware updates, leading to code execution on WAGO PFC200 devices.

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

What is CVE-2019-5156?

CVE-2019-5156 is a high-severity command injection vulnerability in WAGO PFC200 Firmware, published on 10 Mar 2020. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

An exploitable command injection vulnerability exists in the cloud connectivity functionality of WAGO PFC200 versions 03.02.02(14), 03.01.07(13), and 03.00.39(12). An attacker can inject operating system commands into the TimeoutPrepared parameter value contained in the firmware update command.

Weakness: CWE-78

Which versions are affected by CVE-2019-5156?

It affects 1 product.

Products include Wago Pfc200 Firmware.

How do I fix CVE-2019-5156?

No fix has been published for CVE-2019-5156 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-2019-5156 being exploited?

There is no known exploitation of CVE-2019-5156 in the wild and no public exploit code.

Sources

Also known as GHSA-4wh8-v3px-8552.