PatchTheCVECVE-2019-14475: 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-2019-14475 is a high-severity flaw (CVSS 7.5) affecting ccu2 firmware, ccu3 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
eQ-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 obtain a session ID from CVE-2019-9583, resulting in the ability to read the service messages, clear the system protocol, create a new user in the system, or modify/delete internal programs.
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 | 2.0% (top 20%) |
| CISA exploited list | No |
| Weakness | CWE-862 |
| Published | 2019-08-05 |
| 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-2019-14475?
ccu2 firmware: upgrade to newer than 2.47.15; ccu3 firmware: upgrade to newer than 3.47.15. Exact commands for each OS are on this page.
Is CVE-2019-14475 being exploited?
CVE-2019-14475 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-2019-14475 affect?
CVE-2019-14475 affects ccu2 firmware, ccu3 firmware. Severity is high (CVSS 7.5). eQ-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 obtain a session ID from CVE-2019-9583, resulting in the ability to read the service messages
How urgent is CVE-2019-14475?
Priority 56/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action
Related CVEs
- CVE-2019-14473 HIGH 8.8 UPGRADE UPGRADE eQ-3 Homematic CCU2 and CCU3 use session IDs for authentication but lack authorization checks
- CVE-2019-14424 MEDIUM 6.5 UPGRADE UPGRADE A Local File Inclusion (LFI) issue in the addon CUx-Daemon 1.11a of the eQ-3 Homematic CCU-Firmware 2.35.16 un
- CVE-2019-14423 HIGH 8.8 UPGRADE UPGRADE A Remote Code Execution (RCE) issue in the addon CUx-Daemon 1.11a of the eQ-3 Homematic CCU-Firmware 2.35.16 u
- CVE-2019-10122 CRITICAL 9.8 UPGRADE UPGRADE eQ-3 HomeMatic CCU2 devices before 2.41.9 and CCU3 devices before 3.43.16 have buffer overflows in the ReGa is
- CVE-2019-10121 CRITICAL 9.8 UPGRADE UPGRADE eQ-3 HomeMatic CCU2 devices before 2.41.8 and CCU3 devices before 3.43.15 use session IDs for authentication b