CVE-2019-18937: Eq-3 Homematic CCU2 Firmware

Critical severity, CVSS 9.8. EPSS: 33.8% chance of exploitation in the next 30 days.

eQ-3 Homematic CCU2 2.47.20 and CCU3 3.47.18 with the Script Parser AddOn through 1.8 installed allow Remote Code Execution by unauthenticated attackers with access to the web interface via the exec.cgi script, which executes TCL script content from an HTTP POST request.

Affected products

• Eq-3 Homematic CCU2 Firmware: version 2.47.20 only
• Eq-3 Homematic CCU3 Firmware: version 3.47.18 only
• Scriptparser Project Scriptparser: version 1.8 only; version 1.7 only; version 1.6 only; version 1.5 only; version 1.4 only; version 1.3 only; …

Published 2019-11-14. Last modified 2026-06-17.