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.
Severity
CVSS 3.1
9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
34% chance of exploitation in the next 30 days; higher than 98% of CVEs (scores of 2026-10-31)