CVE-2019-10122: Eq-3 CCU2 Firmware

Critical severity, CVSS 9.8. EPSS: 4.1% chance of exploitation in the next 30 days.

eQ-3 HomeMatic CCU2 devices before 2.41.9 and CCU3 devices before 3.43.16 have buffer overflows in the ReGa ise GmbH HTTP-Server 2.0 component, aka HMCCU-179. This may lead to remote code execution.

Affected products

• Eq-3 CCU2 Firmware: before 2.41.9 (fixed in 2.41.9)
• Eq-3 CCU3 Firmware: before 3.43.16 (fixed in 3.43.16)

Published 2019-07-10. Last modified 2026-06-17.