PatchTheCVECVE-2019-14474: eQ-3 Homematic CCU3 3.47.15 and prior has Improper Input Validation in function 'Call()' of ReGa core logic pr
CVE-2019-14474 is a high-severity flaw (CVSS 7.5) affecting ccu3 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- High severity
- Public exploit reference
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 1.9% (top 20%) |
| CISA exploited list | No |
| Weakness | CWE-20 |
| Published | 2019-08-07 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2019-14474?
ccu3 firmware: upgrade to newer than 3.47.15. Exact commands for each OS are on this page.
Is CVE-2019-14474 being exploited?
CVE-2019-14474 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2019-14474 affect?
CVE-2019-14474 affects ccu3 firmware. Severity is high (CVSS 7.5). 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 fr
How urgent is CVE-2019-14474?
Priority 56/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action
Related CVEs
- CVE-2020-12834 CRITICAL 9.8 UPGRADE UPGRADE eQ-3 Homematic Central Control Unit (CCU)2 through 2.51.6 and CCU3 through 3.51.6 allow Remote Code Execution
- CVE-2019-9727 HIGH 7.5 UPGRADE Unauthenticated password hash disclosure in the User.getUserPWD method in eQ-3 AG Homematic CCU3 3.43.15 and e
- CVE-2019-9726 HIGH 7.5 UPGRADE Directory Traversal / Arbitrary File Read in eQ-3 AG Homematic CCU3 3.43.15 and earlier allows remote attacker
- CVE-2019-14475 HIGH 7.5 UPGRADE UPGRADE eQ-3 Homematic CCU2 2.47.15 and prior and CCU3 3.47.15 and prior use session IDs for authentication but lack a
- CVE-2019-14473 HIGH 8.8 UPGRADE UPGRADE eQ-3 Homematic CCU2 and CCU3 use session IDs for authentication but lack authorization checks