CVE-2021-33032

high-risk
Published 2021-07-22

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.

Do I need to act?

!
50.2% chance of exploitation in next 30 days
EPSS score — higher than 50% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
10
CVSS 10.0/10 Critical
NETWORK / LOW complexity

Affected Products (2)

Affected Vendors

Eq-3

References (6)

Exploit https://novag.github.io/posts/homematic-unauthenticated-remote-code-execution/
Release Notes https://www.eq-3.de/downloads/software/HM-CCU2-Firmware_Updates/HM-CCU-2.59.7/HM...
Release Notes https://www.eq-3.de/downloads/software/firmware/ccu3-firmware/CCU3-Changelog.3.5...
Exploit https://novag.github.io/posts/homematic-unauthenticated-remote-code-execution/
Release Notes https://www.eq-3.de/downloads/software/HM-CCU2-Firmware_Updates/HM-CCU-2.59.7/HM...
Release Notes https://www.eq-3.de/downloads/software/firmware/ccu3-firmware/CCU3-Changelog.3.5...
58
/ 100
high-risk
Severity 33/34 · Critical
Exploitability 18/34 · Moderate
Exposure 7/34 · Low