Critical severity · published May 15, 2020
CVE-2020-12834
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…
9.8
CVSS
11.1%
EPSS
No
On KEV
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).
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)11.1% · higher than 96% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CF
Ccu3 Firmware · Eq-3
through 3.51.6 · source: NVD
HC
Homematic Ccu2 Firmware · Eq-3
through 2.51.6 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-12834
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-12834
Exploit
https://psytester.github.io/CVE-2020-12834/
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