CVE-2018-7300

Name: CVE-2018-7300
Creator: NVD / NIST
Published: 2018-02-22T19:29:05.733+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 31.75%

Last modified Jun 17, 2026

CVE-2018-7300 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 31.75% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

31.75%

98.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-22

Affected Software

Vendor	Product	Versions
Eq-3	Homematic Ccu2 Firmware	<= 2.29.22

References

http://atomic111.github.io/article/homematic-ccu2-filewriteThird Party Advisory
https://www.exploit-db.com/exploits/44361/Third Party Advisory, VDB Entry
http://atomic111.github.io/article/homematic-ccu2-filewriteThird Party Advisory
https://www.exploit-db.com/exploits/44361/Third Party Advisory, VDB Entry

Timeline

Published: Feb 22, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-7300?

How severe is CVE-2018-7300?

CVE-2018-7300 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 31.75% probability of exploitation in the next 30 days.

How do I fix CVE-2018-7300?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-7300?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST