CVE-2019-16199 Auth bypass in n/a

Critical 9.8 Published 17 Sep 2019 Updated 5 Aug 2024

Unauthenticated attackers can execute arbitrary code on HomeMatic CCU2 and CCU3 devices via the web interface.

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-2019-16199?

CVE-2019-16199 is a critical authentication bypass vulnerability in n/a, published on 17 Sep 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

eQ-3 Homematic CCU2 before 2.47.18 and CCU3 before 3.47.18 allow Remote Code Execution by unauthenticated attackers with access to the web interface via an HTTP POST request to certain URLs related to the ReGa core process.

Weakness: CWE-306

Which versions are affected by CVE-2019-16199?

It affects 2 products.

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

How do I fix CVE-2019-16199?

No fix has been published for CVE-2019-16199 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2019-16199 being exploited?

There is no known exploitation of CVE-2019-16199 in the wild and no public exploit code.

Sources

Also known as GHSA-mhvr-v5c8-rw24.