CVE intelligence and bounded remediation

CVE-2019-14985 — Eq-3 Homematic Ccu2 Firmware security vulnerability

Critical CVSS 9.8

eQ-3 Homematic CCU2 and CCU3 with the CUxD AddOn installed allow Remote Code Execution by unauthenticated attackers with access to the web interface, because this interface can access the CMD_EXEC virtual device type 28.

Severity
Critical
CVSS
9.8 (3.0)
Published
2019-08-13
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-287

Affected products

  • eq-3 / homematic_ccu2_firmware / 2.35.16
  • eq-3 / homematic_ccu2_firmware / 2.41.5
  • eq-3 / homematic_ccu2_firmware / 2.41.8
  • eq-3 / homematic_ccu2_firmware / 2.41.9
  • eq-3 / homematic_ccu2_firmware / 2.45.6
  • eq-3 / homematic_ccu2_firmware / 2.45.7

Showing 6 representative product identities from 15 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Authentication bypass and missing authentication

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Check exposure

  • Map every affected endpoint and protocol path, including alternate ports, legacy routes, recovery flows, service accounts, and machine-to-machine access.
  • Confirm which deployments enable the affected authentication mode and whether the interface is reachable from untrusted networks.
  • Review session, token, credential, and proxy trust configuration without attempting account takeover.

Remediate safely

  • Apply the supported fix and centralize fail-closed authentication before protected request handling.
  • Remove default or embedded credentials, rotate affected secrets and sessions, and bind authentication decisions to the intended audience and channel.
  • Add negative tests for alternate routes, malformed or absent credentials, recovery flows, and proxy-derived identity.

Authoritative sources

Complete CVE record and remediation plan

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