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Homematic Ccu2 FirmwareOperating system · Eq 3

CVE-2019-9584

CRITICAL · 9.8 CVSS v3.0 Published 2019-08-14
Fix available
A fix is available. Upgrade to after 3.47.15 or later.
See remediation →
100/100
Remediation priority · Urgent
Public exploit Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
eQ-3 Homematic AddOn 'CloudMatic' on CCU2 and CCU3 allows uncontrolled admin access, resulting in the ability to obtain VPN profile details, shutting down the VPN service and to delete the VPN service configuration. This is related to improper access control for all /addons/mh/ pages.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis

A detailed technical summary for this CVE is being prepared.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Homematic Ccu2 FirmwareOperating system
Affected:<= 2.47.15
Homematic Ccu3 FirmwareOperating system
Affected:<= 3.47.15

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to a release after 3.47.15
Recommended fix Moderate confidence

CCU2: firmware > 2.47.15 | CCU3: firmware > 3.47.15

  1. 1. Identify the current firmware version of the Homematic CCU2 or CCU3 device by accessing the web interface and navigating to 'Status and Control' > 'Device Information'
  2. 2. For CCU2 devices: Upgrade firmware to a version higher than 2.47.15 (e.g., 2.47.18 or later)
  3. 3. For CCU3 devices: Upgrade firmware to a version higher than 3.47.15 (e.g., 3.47.18 or later)
  4. 4. Download the firmware update from the official eQ-3 support page or via the Homematic web interface's automatic update function
  5. 5. Backup the current configuration before performing the firmware upgrade
  6. 6. Perform the firmware upgrade following the vendor's documented procedures
  7. 7. After upgrade, verify that the CloudMatic add-on is updated to the latest version and confirm the /addons/mh/ pages now require proper authentication
Caveat Firmware upgrades on Homematic devices typically retain configuration but a backup is strongly recommended before upgrading

Generated from the published advisory — verify against the referenced sources before acting.

We can identify the exact fixed release, upgrade, and verify it in staging — typical engagement from $2,300. Get the upgrade done

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2019-9584 in production — separate from our analysis above.

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