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Vulnerability record · CVE-2019-14474 · published 7 August 2019

CVE-2019-14474: Eq-3 ccu3 firmware improper input validation vulnerability

Eq 3 · Ccu3 Firmware

eQ-3 Homematic CCU3 3.47.15 and prior has Improper Input Validation in function 'Call()' of ReGa core logic process, resulting in the ability to start a Denial of Service. Due to Improper Authorization an attacker can obtain a session ID from CVE-2019-9583 or a valid guest/user/admin account can start this attack too.

7.5 CVSS 3.0 High EPSS 1.9% · top 21.0% CWE-20 · Improper input validation
7.5CVSS 3.0 base score, v2 5.0
1.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

eQ-3 Homematic CCU3 3.47.15 and prior has Improper Input Validation in function 'Call()' of ReGa core logic process, resulting in the ability to start a Denial of Service. Due to Improper Authorization an attacker can obtain a session ID from CVE-2019-9583 or a valid guest/user/admin account can start this attack too.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://psytester.github.io/CVE-2019-14474 ExploitThird Party Advisory
https://psytester.github.io/CVE-2019-14474 ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2020-12834Eq-3 homematic ccu2 firmware incorrect default permissions vulnerabilityeQ-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, …EPSS 11%9.8CVE-2019-10119Eq-3 ccu3 firmware missing authentication for critical function vulnerabilityeQ-3 HomeMatic CCU2 devices before 2.41.8 and CCU3 devices before 3.43.16 use session IDs for authentication but lack authorization checks. An attack…EPSS 2.0%9.8CVE-2019-10121Eq-3 ccu3 firmware missing authentication for critical function vulnerabilityeQ-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 attack…EPSS 4.6%9.8CVE-2019-10122Eq-3 ccu3 firmware out-of-bounds write vulnerabilityeQ-3 HomeMatic CCU2 devices before 2.41.9 and CCU3 devices before 3.43.16 have buffer overflows in the ReGa ise GmbH HTTP-Server 2.0 component, aka H…EPSS 4.1%8.8CVE-2019-14473Eq-3 ccu2 firmware missing authorization vulnerabilityeQ-3 Homematic CCU2 and CCU3 use session IDs for authentication but lack authorization checks. Consequently, a valid guest level or user level accoun…EPSS 1.9%8.8CVE-2019-10120Eq-3 ccu3 firmware vulnerabilityOn eQ-3 HomeMatic CCU2 devices before 2.41.8 and CCU3 devices before 3.43.16, automatic login configuration (aka setAutoLogin) can be achieved by con…EPSS 1.3%7.5CVE-2019-14475Eq-3 ccu2 firmware missing authorization vulnerabilityeQ-3 Homematic CCU2 2.47.15 and prior and CCU3 3.47.15 and prior use session IDs for authentication but lack authorization checks. An attacker can ob…EPSS 2.0%7.5CVE-2019-9727Eq-3 ccu3 firmware missing authentication for critical function vulnerabilityUnauthenticated password hash disclosure in the User.getUserPWD method in eQ-3 AG Homematic CCU3 3.43.15 and earlier allows remote attackers to retri…EPSS 2.2%

Source: NIST National Vulnerability Database (record CVE-2019-14474), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.