eQ-3 HomeMatic CCU2 devices before 2.41.8 and CCU3 devices before 3.43.16 use session IDs…
Priority MEDIUM 46CWE-306Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-306.
Summary
eQ-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 attacker can obtain a session ID via an invalid login attempt to the RemoteApi account, aka HMCCU-154. This leads to automatic login as admin.
Why it matters now
EPSS 0.01956 80th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:eq-3:ccu3_firmware:*:*:*:*:*:*:*:* | before 3.43.16 | Vulnerable | Eq-3 |
| cpe:2.3:h:eq-3:ccu3:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Eq-3 |
| cpe:2.3:o:eq-3:ccu2_firmware:*:*:*:*:*:*:*:* | before 2.41.8 | Vulnerable | Eq-3 |
| cpe:2.3:h:eq-3:ccu2:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Eq-3 |
- cpe:2.3:o:eq-3:ccu3_firmware:*:*:*:*:*:*:*:* Versions before 3.43.16 Vulnerable ·Eq-3
- cpe:2.3:h:eq-3:ccu3:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Eq-3
- cpe:2.3:o:eq-3:ccu2_firmware:*:*:*:*:*:*:*:* Versions before 2.41.8 Vulnerable ·Eq-3
- cpe:2.3:h:eq-3:ccu2:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Eq-3
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2019-10119
- 2026-10-03 Alias added: GHSA-fp3q-2pxv-43rj
References
More Eq-3 Ccu2 Firmware vulnerabilities
- TI-2019-10757 A Remote Code Execution (RCE) issue in the addon CUx-Daemon 1.11a of the eQ-3 Homematic… CVSS 3.1HIGH 8.8
- TI-2019-07445 eQ-3 HomeMatic CCU2 devices before 2.41.8 and CCU3 devices before 3.43.15 use session IDs… CVSS 3.0CRITICAL 9.8
- TI-2019-07446 eQ-3 HomeMatic CCU2 devices before 2.41.9 and CCU3 devices before 3.43.16 have buffer… CVSS 3.0CRITICAL 9.8
- TI-2019-10792 eQ-3 Homematic CCU2 and CCU3 use session IDs for authentication but lack authorization… CVSS 3.0HIGH 8.8
- TI-2019-07444 On eQ-3 HomeMatic CCU2 devices before 2.41.8 and CCU3 devices before 3.43.16, automatic… CVSS 3.0HIGH 8.8
- TI-2019-10794 eQ-3 Homematic CCU2 2.47.15 and prior and CCU3 3.47.15 and prior use session IDs for… CVSS 3.0HIGH 7.5
Sources
- CVE-2019-10119 · CVE Program
- CVE-2019-10119 · NVD
- FIRST EPSS
- GHSA-fp3q-2pxv-43rj · GitHub Advisory Database · CC BY 4.0
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