CVE-2019-14984: eQ-3 Homematic CCU2 and CCU3 with the XML-API through 1.2.0 AddOn installed allow Remote Code Execution by una

Q: How do I fix CVE-2019-14984?

homematic ccu2 firmware: upgrade to newer than 1.2.0; homematic ccu3 firmware: upgrade to newer than 1.2.0. Exact commands for each OS are on this page.

Q: Is CVE-2019-14984 being exploited?

CVE-2019-14984 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2019-14984 affect?

CVE-2019-14984 affects homematic ccu2 firmware, homematic ccu3 firmware. Severity is high (CVSS 8.1). eQ-3 Homematic CCU2 and CCU3 with the XML-API through 1.2.0 AddOn installed allow Remote Code Execution by unauthenticated attackers with access to the web interface, because the undocumented addons/xmlapi/exec.cgi script uses CMD_EXEC to e

Q: How urgent is CVE-2019-14984?

Priority 62/100. High severity; EPSS top 7%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 8.1REMOTEUPGRADEUPGRADE

CVE-2019-14984 is a high-severity flaw (CVSS 8.1) affecting homematic ccu2 firmware, homematic ccu3 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

eQ-3 Homematic CCU2 and CCU3 with the XML-API through 1.2.0 AddOn installed allow Remote Code Execution by unauthenticated attackers with access to the web interface, because the undocumented addons/xmlapi/exec.cgi script uses CMD_EXEC to execute TCL code from a POST request.

Why this priority

High severity
EPSS top 7%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	5.8% (top 7%)
CISA exploited list	No
Weakness	CWE-306
Published	2019-08-13
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

2019-08-13 20:15 UTCPublished CVE record published
2026-06-17 02:19 UTCUpdated Record last modified

eq-3 homematic ccu2 firmware UPGRADE

Affected: <= 1.2.0

Fixed in: newer than 1.2.0

Safe to downgrade to: no unaffected older release

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.

eq-3 homematic ccu3 firmware UPGRADE

Affected: <= 1.2.0

Fixed in: newer than 1.2.0

Safe to downgrade to: no unaffected older release

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-2019-14984?

homematic ccu2 firmware: upgrade to newer than 1.2.0; homematic ccu3 firmware: upgrade to newer than 1.2.0. Exact commands for each OS are on this page.

Is CVE-2019-14984 being exploited?

CVE-2019-14984 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-2019-14984 affect?

CVE-2019-14984 affects homematic ccu2 firmware, homematic ccu3 firmware. Severity is high (CVSS 8.1). eQ-3 Homematic CCU2 and CCU3 with the XML-API through 1.2.0 AddOn installed allow Remote Code Execution by unauthenticated attackers with access to the web interface, because the undocumented addons/xmlapi/exec.cgi script uses CMD_EXEC to e

How urgent is CVE-2019-14984?

Priority 62/100. High severity; EPSS top 7%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2021-33032 CRITICAL 10.0 UPGRADE UPGRADE A Remote Code Execution (RCE) vulnerability in the WebUI component of the eQ-3 HomeMatic CCU2 firmware up to a
CVE-2020-12834 CRITICAL 9.8 UPGRADE UPGRADE eQ-3 Homematic Central Control Unit (CCU)2 through 2.51.6 and CCU3 through 3.51.6 allow Remote Code Execution
CVE-2019-9585 CRITICAL 9.8 UPGRADE UPGRADE eQ-3 Homematic CCU2 prior to 2.47.10 and CCU3 prior to 3.47.10 JSON API has Improper Access Control for Interf
CVE-2019-9584 CRITICAL 9.8 UPGRADE UPGRADE eQ-3 Homematic AddOn 'CloudMatic' on CCU2 and CCU3 allows uncontrolled admin access, resulting in the ability
CVE-2019-9583 HIGH 8.2 MITIGATE MITIGATE eQ-3 Homematic CCU2 and CCU3 obtain session IDs without login

References

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