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CVE-2019-10121

UnknownEPSS 4.63%

Last modified

CVE-2019-10121 is a vulnerability of currently unknown severity. 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. EPSS estimates a 4.63% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability
4.63%

90.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
Eq-3Ccu3 Firmware< 3.43.15
Eq-3Ccu2 Firmware< 2.41.8

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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 to automatic login as admin.
How severe is CVE-2019-10121?
Severity scoring for CVE-2019-10121 is pending analysis. The EPSS model estimates a 4.63% probability of exploitation in the next 30 days.
How do I fix CVE-2019-10121?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-10121?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST