CVE-2019-9582: eQ-3 Homematic CCU2 outdated base software packages allows Denial of Service

This week

HIGH 7.5REMOTEMITIGATE

CVE-2019-9582 is a high-severity flaw (CVSS 7.5) affecting homematic ccu2 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

eQ-3 Homematic CCU2 outdated base software packages allows Denial of Service. CCU2 affected versions: 2.35.16, 2.41.5, 2.41.8, 2.41.9, 2.45.6, 2.45.7, 2.47.10, 2.47.12, 2.47.15.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.4% (top 16%)
CISA exploited list	No
Published	2019-08-14
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

2019-08-14 20:15 UTCPublished CVE record published
2026-06-17 02:43 UTCUpdated Record last modified

eq-3 homematic ccu2 firmware MITIGATE

Affected: 2.35.16 · 2.41.5 · 2.41.8 · 2.41.9 · 2.45.6 · 2.45.7 · 2.47.10 · 2.47.12

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.35.16

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-2019-9582?

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

Is CVE-2019-9582 being exploited?

CVE-2019-9582 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-2019-9582 affect?

CVE-2019-9582 affects homematic ccu2 firmware. Severity is high (CVSS 7.5). eQ-3 Homematic CCU2 outdated base software packages allows Denial of Service. CCU2 affected versions: 2.35.16, 2.41.5, 2.41.8, 2.41.9, 2.45.6, 2.45.7, 2.47.10, 2.47.12, 2.47.15.

How urgent is CVE-2019-9582?

Priority 57/100. High severity; 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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