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CVE-2019-10121

9.8 criticalEPSS 4.6%

Critical (9.8) in eq-3. EPSS 4.6% chance of exploitation in the next 30 days.

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 to automatic login as admin.

Severity

CVSS 3.0

9.8 critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
4.6% chance of exploitation in the next 30 days; higher than 91% of CVEs (scores of 2026-10-31)
CWE
CWE-306
Published
Modified
Record from
the NVD, synced

Affected

References

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