What is CVE-2019-9585?

CVE-2019-9585 is a critical-severity vulnerability in Eq-3 Homematic Ccu2, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2019-08-14.

How severe is CVE-2019-9585?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Auth bypass in Eq-3 Homematic Ccu2

CVE-2019-9585

eQ-3 Homematic CCU2 prior to 2.47.10 and CCU3 prior to 3.47.10 JSON API has Improper Access Control for Interface.***Metadata related operations, resulting in the ability to read, set and deletion of Metadata.

Vulnerability class: Broken Authentication

Published 2019-08-14 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.027 (85.5th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 85.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.027 · newest: 0.027 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

github.com/psytester/psytester.github.io/blob/master/_posts/hacking_and_pentest… (Exploit, Third Party Advisory)
psytester.github.io/CVE-2019-9585/ (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2019-9585?: CVE-2019-9585 is a critical-severity vulnerability in Eq-3 Homematic Ccu2, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2019-08-14.
How severe is CVE-2019-9585?: Critical severity. CVSS v3 base score is 9.8 out of 10.