Is CVE-2018-7300 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2018-7300, but active exploitation has not been confirmed.

Can CVE-2018-7300 be exploited remotely?

Yes. CVE-2018-7300 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2018-7300?

CVE-2018-7300 has a CVSS score of 9.8 (CRITICAL).

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CRITICALPOC

CVE-2018-7300

CWE-22Published: February 22, 2018· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

Directory Traversal / Arbitrary File Write / Remote Code Execution in the User.setLanguage method in eQ-3 AG Homematic CCU2 2.29.2 and earlier allows remote attackers to write arbitrary files to the device's filesystem. This vulnerability can be exploited by unauthenticated attackers with access to the web interface.

NVD Source

Technical Analysis

CVE-2018-7300 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

A proof-of-concept (PoC) exploit exists for CVE-2018-7300. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.