Auth bypass in Eq-3 Ccu2
CVE-2019-10121
eQ-3 HomeMatic CCU2 devices before 2.41.8 and CCU3 devices before 3.43.15 use session IDs for authentication but lack authorization checks. An attacker can obtain a session ID via the user authentication dialogue, aka HMCCU-153. This leads…
Vulnerability class: Broken Authentication
EPSS: 0.046 (90.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Eq-3 Ccu2
- Eq-3 Ccu2_firmware
- Eq-3 Ccu3
- Eq-3 Ccu3_firmware
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (x_refsource_MISC, Release Notes, Vendor Advisory)
- cve@mitre.org (x_refsource_MISC, Release Notes, Vendor Advisory)
- cve@mitre.org (x_refsource_MISC, Broken Link)
Frequently asked questions
- What is CVE-2019-10121?
- CVE-2019-10121 is a critical-severity vulnerability in Eq-3 Ccu2, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2019-07-10.
- How severe is CVE-2019-10121?
- Critical severity. CVSS v3 base score is 9.8 out of 10.