How severe is CVE-2018-7298?

CVE-2018-7298 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-7298 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-7298?

CVE-2018-7298 affects Eq-3 Homematic Central Control Unit Ccu2 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-7298?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-7298 published?

CVE-2018-7298 was published on 2018-02-22 and last updated on 2026-06-17.

CVE-2018-7298

CVE-2018-7298 is a high-severity vulnerability in Eq-3 Homematic Central Control Unit Ccu2 Firmware with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-319.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 9.3
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-319
Affected product: Eq-3 Homematic Central Control Unit Ccu2 Firmware
Published: 2018-02-22
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2018-7298?: 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.
How severe is CVE-2018-7298?: CVE-2018-7298 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-7298 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-7298?: CVE-2018-7298 affects Eq-3 Homematic Central Control Unit Ccu2 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-7298?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-7298 published?: CVE-2018-7298 was published on 2018-02-22 and last updated on 2026-06-17.

References

http://atomic111.github.io/article/homematic-ccu2-firmware-via-plain-http

Affected products (1)

cpe:2.3:o:eq-3:homematic_central_control_unit_ccu2_firmware:2.29.22:*:*:*:*:*:*:*

More vulnerabilities in Eq-3 Homematic Central Control Unit Ccu2 Firmware

CVE-2018-7301 — Critical (CVSS 9.8): eQ-3 AG HomeMatic CCU2 2.29.22 devices have an open XML-RPC port without authentication. This can be exploited by…
CVE-2018-7297 — Critical (CVSS 9.8): Remote Code Execution in the TCL script interpreter in eQ-3 AG Homematic CCU2 2.29.2 and earlier allows remote…
CVE-2018-7299 — High (CVSS 8.0): Remote Code Execution in the addon installation process in eQ-3 AG Homematic CCU2 2.29.2 and earlier allows…
CVE-2018-7296 — Medium (CVSS 5.3): Directory Traversal / Arbitrary File Read in User.getLanguage method in eQ-3 AG Homematic CCU2 2.29.2 and earlier…

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