CVE-2021-42638 Command injection in n/a

High 8.1 Published 1 Feb 2022 Updated 9 Jul 2026

Unsanitized user input in PrinterLogic Web Stack allows pre-authentication attackers to execute arbitrary commands remotely.

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-2021-42638?

CVE-2021-42638 is a high-severity command injection vulnerability in n/a, published on 1 Feb 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

PrinterLogic Web Stack versions 19.1.1.13 SP9 and below do not sanitize user input resulting in pre-auth remote code execution.

Weakness: CWE-77

Which versions are affected by CVE-2021-42638?

It affects 1 product.

Products include Printerlogic Web Stack.

How do I fix CVE-2021-42638?

No fix has been published for CVE-2021-42638 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-2021-42638 being exploited?

There is no known exploitation of CVE-2021-42638 in the wild and no public exploit code.

Sources

Also known as GHSA-28cj-w6xw-4v98.