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.
References (3)
Core 3
Core References
Exploit, Third Party Advisory x_refsource_misc
https://novag.github.io/posts/homematic-unauthenticated-remote-code-execution/
Release Notes, Vendor Advisory x_refsource_misc
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 x_refsource_misc
https://www.eq-3.de/downloads/software/firmware/ccu3-firmware/CCU3-Changelog.3.59.6.pdf
Scores
CVSS v3
10.0
EPSS
0.5216
EPSS Percentile
98.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Details
CWE
CWE-78
Status
published
Products (2)
eq-3/homematic_ccu2_firmware
< 2.57.5
eq-3/homematic_ccu3_firmware
< 3.57.5
Published
Jul 22, 2021
Tracked Since
Feb 18, 2026