CVE-2021-33032 Command injection in n/a

Critical 10.0 Published 22 Jul 2021 Updated 3 Aug 2024

Remote unauthenticated attackers can execute system commands as root via HTTP requests in the HomeMatic CCU WebUI.

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-2021-33032?

CVE-2021-33032 is a critical command injection vulnerability in n/a, published on 22 Jul 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A Remote Code Execution (RCE) vulnerability in the WebUI component of the eQ-3 HomeMatic CCU2 firmware up to and including version 2.57.5 and CCU3 firmware up to and including version 3.57.5 allows remote unauthenticated attackers to execute system commands as root via a simple HTTP request.

Weakness: CWE-78

Which versions are affected by CVE-2021-33032?

It affects 2 products.

Products include Eq-3 Homematic Ccu2 Firmware, Eq-3 Homematic Ccu3 Firmware.

How do I fix CVE-2021-33032?

No fix has been published for CVE-2021-33032 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-2021-33032 being exploited?

There is no known exploitation of CVE-2021-33032 in the wild and no public exploit code.

Sources

Also known as GHSA-r7xr-9q5c-fh23.