CVE-2020-12834
9.8
CRITICAL · CVSS 3.1 · EPSS 11.1% (pctl 96)
Patch early
EPSS 11.1% — above the 10% action threshold.
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).
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 11.07% — more likely to be exploited than 96% of all CVEs |
| Weakness | CWE-276 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2020-05-15 |
| Last modified | 2026-06-17 |
Affected (4)
| Vendor | Product |
|---|---|
| eq-3 | ccu3 firmware |
| eq-3 | homematic ccu2 |
| eq-3 | homematic ccu2 firmware |
| eq-3 | homematic ccu3 |
→ the Explorer · watch your stack · NVD