Critical severity9.8NVD Advisory· Published May 15, 2020· Updated Jun 17, 2026
CVE-2020-12834
CVE-2020-12834
Description
eQ-3 Homematic Central Control Unit (CCU)2 through 2.51.6 and CCU3 through 3.51.6 allow Remote Code Execution in the JSON API Method ReGa.runScript, by unauthenticated attackers with access to the web interface, due to the default auto-login feature being enabled during first-time setup (or factory reset).
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Affected products
2- eQ-3/Homematic Central Control Unitdescription
- Range: <=2.51.6
Patches
Vulnerability mechanics
References
1- psytester.github.io/CVE-2020-12834/nvdExploitThird Party Advisory
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