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Vulnerability record · CVE-2018-7298 · published 22 February 2018

CVE-2018-7298: Eq-3 homematic central control unit ccu2 firmware cleartext transmission vulnerability

Eq 3 · Homematic Central Control Unit Ccu2 Firmware

In /usr/local/etc/config/addons/mh/loopupd.sh on eQ-3 AG HomeMatic CCU2 2.29.22 devices, software update packages are downloaded via the HTTP protocol, which does not provide any cryptographic protection of the downloaded contents. An attacker with a privileged network position (which could be obtained via DNS spoofing of www.meine-homematic.de or other approaches) can exploit this issue in order to provide arbitrary malicious firmware updates to the CCU2. This can result in a full system compromise.

8.1 CVSS 3.0 High EPSS 0.79% · top 45.5% CWE-319 · Cleartext transmission
8.1CVSS 3.0 base score, v2 9.3
0.79%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

In /usr/local/etc/config/addons/mh/loopupd.sh on eQ-3 AG HomeMatic CCU2 2.29.22 devices, software update packages are downloaded via the HTTP protocol, which does not provide any cryptographic protection of the downloaded contents. An attacker with a privileged network position (which could be obtained via DNS spoofing of www.meine-homematic.de or other approaches) can exploit this issue in order to provide arbitrary malicious firmware updates to the CCU2. This can result in a full system compromise.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://atomic111.github.io/article/homematic-ccu2-firmware-via-plain-http Third Party Advisory
http://atomic111.github.io/article/homematic-ccu2-firmware-via-plain-http Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2018-7301Eq-3 homematic central control unit ccu2 firmware missing authentication for critical function vulnerabilityeQ-3 AG HomeMatic CCU2 2.29.22 devices have an open XML-RPC port without authentication. This can be exploited by sending arbitrary XML-RPC requests …EPSS 1.5%9.8CVE-2018-7297Homematic CCU2 TCL interpreter unauthenticated remote code executionThe TCL script interpreter in eQ-3 Homematic CCU2 firmware 2.29.2 and earlier allows remote attackers to execute system commands and gain read/write …EPSS 64%analysed8.0CVE-2018-7299Eq-3 homematic central control unit ccu2 firmware vulnerabilityRemote Code Execution in the addon installation process in eQ-3 AG Homematic CCU2 2.29.2 and earlier allows authenticated attackers to create or over…EPSS 1.1%5.3CVE-2018-7296Eq-3 homematic central control unit ccu2 firmware path traversal vulnerabilityDirectory Traversal / Arbitrary File Read in User.getLanguage method in eQ-3 AG Homematic CCU2 2.29.2 and earlier allows remote attackers to read the…EPSS 1.9%

Source: NIST National Vulnerability Database (record CVE-2018-7298), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.