Read the docs
TI-2019-07002 Aliases CVE-2019-9583GHSA-49c8-8f9w-rcc6

eQ-3 Homematic CCU2 and CCU3 obtain session IDs without login.

Priority LOW 39CWE-400Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · Low · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-400.

Summary

eQ-3 Homematic CCU2 and CCU3 obtain session IDs without login. This allows a Denial of Service and is a starting point for other attacks. Affected versions for CCU2: 2.35.16, 2.41.5, 2.41.8, 2.41.9, 2.45.6, 2.45.7, 2.47.10, 2.47.12, 2.47.15. Affected versions for CCU3: 3.41.11, 3.43.16, 3.45.5, 3.45.7, 3.47.10, 3.47.15.

Why it matters now

EPSS 0.01877 79th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
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

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 18

CPEVersionsRoleVendor
cpe:2.3:o:eq-3:homematic_ccu3_firmware:3.41.11:*:*:*:*:*:*:*3.41.11VulnerableEq-3
cpe:2.3:o:eq-3:homematic_ccu3_firmware:3.43.16:*:*:*:*:*:*:*3.43.16VulnerableEq-3
cpe:2.3:o:eq-3:homematic_ccu3_firmware:3.45.5:*:*:*:*:*:*:*3.45.5VulnerableEq-3
cpe:2.3:o:eq-3:homematic_ccu3_firmware:3.45.7:*:*:*:*:*:*:*3.45.7VulnerableEq-3
cpe:2.3:o:eq-3:homematic_ccu3_firmware:3.47.10:*:*:*:*:*:*:*3.47.10VulnerableEq-3
cpe:2.3:o:eq-3:homematic_ccu3_firmware:3.47.15:*:*:*:*:*:*:*3.47.15VulnerableEq-3
cpe:2.3:h:eq-3:homematic_ccu3:-:*:*:*:*:*:*:*not specified by NVDRunning onEq-3
cpe:2.3:o:eq-3:homematic_ccu2_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableEq-3
cpe:2.3:o:eq-3:homematic_ccu2_firmware:2.35.16:*:*:*:*:*:*:*2.35.16VulnerableEq-3
cpe:2.3:o:eq-3:homematic_ccu2_firmware:2.41.5:*:*:*:*:*:*:*2.41.5VulnerableEq-3
  • cpe:2.3:o:eq-3:homematic_ccu3_firmware:3.41.11:*:*:*:*:*:*:* Versions 3.41.11 Vulnerable ·Eq-3
  • cpe:2.3:o:eq-3:homematic_ccu3_firmware:3.43.16:*:*:*:*:*:*:* Versions 3.43.16 Vulnerable ·Eq-3
  • cpe:2.3:o:eq-3:homematic_ccu3_firmware:3.45.5:*:*:*:*:*:*:* Versions 3.45.5 Vulnerable ·Eq-3
  • cpe:2.3:o:eq-3:homematic_ccu3_firmware:3.45.7:*:*:*:*:*:*:* Versions 3.45.7 Vulnerable ·Eq-3
  • cpe:2.3:o:eq-3:homematic_ccu3_firmware:3.47.10:*:*:*:*:*:*:* Versions 3.47.10 Vulnerable ·Eq-3
  • cpe:2.3:o:eq-3:homematic_ccu3_firmware:3.47.15:*:*:*:*:*:*:* Versions 3.47.15 Vulnerable ·Eq-3
  • cpe:2.3:h:eq-3:homematic_ccu3:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Eq-3
  • cpe:2.3:o:eq-3:homematic_ccu2_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Eq-3
  • cpe:2.3:o:eq-3:homematic_ccu2_firmware:2.35.16:*:*:*:*:*:*:* Versions 2.35.16 Vulnerable ·Eq-3
  • cpe:2.3:o:eq-3:homematic_ccu2_firmware:2.41.5:*:*:*:*:*:*:* Versions 2.41.5 Vulnerable ·Eq-3
Show 8 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:eq-3:homematic_ccu2_firmware:2.41.8:*:*:*:*:*:*:*2.41.8VulnerableEq-3
cpe:2.3:o:eq-3:homematic_ccu2_firmware:2.41.9:*:*:*:*:*:*:*2.41.9VulnerableEq-3
cpe:2.3:o:eq-3:homematic_ccu2_firmware:2.45.6:*:*:*:*:*:*:*2.45.6VulnerableEq-3
cpe:2.3:o:eq-3:homematic_ccu2_firmware:2.45.7:*:*:*:*:*:*:*2.45.7VulnerableEq-3
cpe:2.3:o:eq-3:homematic_ccu2_firmware:2.47.10:*:*:*:*:*:*:*2.47.10VulnerableEq-3
cpe:2.3:o:eq-3:homematic_ccu2_firmware:2.47.12:*:*:*:*:*:*:*2.47.12VulnerableEq-3
cpe:2.3:o:eq-3:homematic_ccu2_firmware:2.47.15:*:*:*:*:*:*:*2.47.15VulnerableEq-3
cpe:2.3:h:eq-3:homematic_ccu2:-:*:*:*:*:*:*:*not specified by NVDRunning onEq-3
  • cpe:2.3:o:eq-3:homematic_ccu2_firmware:2.41.8:*:*:*:*:*:*:* Versions 2.41.8 Vulnerable ·Eq-3
  • cpe:2.3:o:eq-3:homematic_ccu2_firmware:2.41.9:*:*:*:*:*:*:* Versions 2.41.9 Vulnerable ·Eq-3
  • cpe:2.3:o:eq-3:homematic_ccu2_firmware:2.45.6:*:*:*:*:*:*:* Versions 2.45.6 Vulnerable ·Eq-3
  • cpe:2.3:o:eq-3:homematic_ccu2_firmware:2.45.7:*:*:*:*:*:*:* Versions 2.45.7 Vulnerable ·Eq-3
  • cpe:2.3:o:eq-3:homematic_ccu2_firmware:2.47.10:*:*:*:*:*:*:* Versions 2.47.10 Vulnerable ·Eq-3
  • cpe:2.3:o:eq-3:homematic_ccu2_firmware:2.47.12:*:*:*:*:*:*:* Versions 2.47.12 Vulnerable ·Eq-3
  • cpe:2.3:o:eq-3:homematic_ccu2_firmware:2.47.15:*:*:*:*:*:*:* Versions 2.47.15 Vulnerable ·Eq-3
  • cpe:2.3:h:eq-3:homematic_ccu2:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Eq-3

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-9583
  2. 2026-10-03 Alias added: GHSA-49c8-8f9w-rcc6

References

Exploit 2

  • TI-2021-12636 A Remote Code Execution (RCE) vulnerability in the WebUI component of the eQ-3 HomeMatic… CVSS 3.1CRITICAL 10.0
  • TI-2019-13655 eQ-3 Homematic CCU2 2.47.20 and CCU3 3.47.18 with the HM-Print AddOn through 1.2a… CVSS 3.1CRITICAL 9.8
  • TI-2019-13654 eQ-3 Homematic CCU2 2.47.20 and CCU3 3.47.18 with the E-Mail AddOn through 1.6.8.c… CVSS 3.1CRITICAL 9.8
  • TI-2019-13653 eQ-3 Homematic CCU2 2.47.20 and CCU3 3.47.18 with the Script Parser AddOn through 1.8… CVSS 3.1CRITICAL 9.8
  • TI-2018-05294 Directory Traversal / Arbitrary File Write / Remote Code Execution in the… CVSS 3.1CRITICAL 9.8
  • TI-2020-10201 eQ-3 Homematic Central Control Unit (CCU)2 through 2.51.6 and CCU3 through 3.51.6 allow… CVSS 3.1CRITICAL 9.8
See all 13 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences