CVE-2018-7301: eQ-3 AG HomeMatic CCU2 2.29.22 devices have an open XML-RPC port without authentication

This month

CRITICAL 9.8REMOTEMITIGATE

CVE-2018-7301 is a critical-severity flaw (CVSS 9.8) affecting homematic central control unit ccu2 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

eQ-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 to control the attached BidCos devices.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.5% (top 27%)
CISA exploited list	No
Weakness	CWE-306
Published	2018-02-22
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: eq-3

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2018-02-22 19:29 UTCPublished CVE record published
2026-06-17 02:02 UTCUpdated Record last modified

eq-3 homematic central control unit ccu2 firmware MITIGATE

Affected: 2.29.22

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.29.22

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2018-7301?

homematic central control unit ccu2 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2018-7301 being exploited?

CVE-2018-7301 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2018-7301 affect?

CVE-2018-7301 affects homematic central control unit ccu2 firmware. Severity is 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 sending arbitrary XML-RPC requests to control the attached BidCos devices.

How urgent is CVE-2018-7301?

Priority 58/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2018-7299 HIGH 8.0 UPGRADE Remote Code Execution in the addon installation process in eQ-3 AG Homematic CCU2 2.29.2 and earlier allows au
CVE-2018-7298 HIGH 8.1 MITIGATE In /usr/local/etc/config/addons/mh/loopupd.sh on eQ-3 AG HomeMatic CCU2 2.29.22 devices, software update packa
CVE-2018-7297 CRITICAL 9.8 UPGRADE Remote Code Execution in the TCL script interpreter in eQ-3 AG Homematic CCU2 2.29.2 and earlier allows remote
CVE-2018-7296 MEDIUM 5.3 UPGRADE Directory Traversal / Arbitrary File Read in User.getLanguage method in eQ-3 AG Homematic CCU2 2.29.2 and earl

References

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