CVE-2021-33032

Public Exploit

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.

Category

10.0
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 51.04% Top 5%
Vendor Advisory eq-3.de Vendor Advisory eq-3.de
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://novag.github.io/posts/homematic-unauthenticated-remote-code-execution/ third party advisory exploit
https://www.eq-3.de/downloads/software/HM-CCU2-Firmware_Updates/HM-CCU-2.59.7/HM-CCU2-Changelog.2.59.7.pdf release notes vendor advisory
https://www.eq-3.de/downloads/software/firmware/ccu3-firmware/CCU3-Changelog.3.59.6.pdf release notes vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-33032?
CVE-2021-33032 has been scored as a critical severity vulnerability.
How to fix CVE-2021-33032?
To fix CVE-2021-33032, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-33032 being actively exploited in the wild?
It is possible that CVE-2021-33032 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~51% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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