CVE-2019-9583

Name: CVE-2019-9583
Creator: NVD / NIST
Published: 2019-08-14T20:15:11.79+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.2/10EPSS 1.88%

Last modified Jun 17, 2026

CVE-2019-9583 is a high-severity vulnerability rated 8.2/10 on the CVSS scale. eQ-3 Homematic CCU2 and CCU3 obtain session IDs without login. This allows a Denial of Service and is a starting point for other attacks. EPSS estimates a 1.88% chance of exploitation in the next 30 days.

Description

eQ-3 Homematic CCU2 and CCU3 obtain session IDs without login. This allows a Denial of Service and is a starting point for other attacks. Affected versions for CCU2: 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. Affected versions for CCU3: 3.41.11, 3.43.16, 3.45.5, 3.45.7, 3.47.10, 3.47.15.

Metrics

CVSS 3.1

8.2/10

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

EPSS Probability

1.88%

76.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-400

Affected Software

Vendor	Product	Versions
Eq-3	Homematic Ccu3 Firmware	3.41.11
Eq-3	Homematic Ccu3 Firmware	3.43.16
Eq-3	Homematic Ccu3 Firmware	3.45.5
Eq-3	Homematic Ccu3 Firmware	3.45.7
Eq-3	Homematic Ccu3 Firmware	3.47.10
Eq-3	Homematic Ccu3 Firmware	3.47.15
Eq-3	Homematic Ccu2 Firmware	All versions
Eq-3	Homematic Ccu2 Firmware	2.35.16
Eq-3	Homematic Ccu2 Firmware	2.41.5
Eq-3	Homematic Ccu2 Firmware	2.41.8
Eq-3	Homematic Ccu2 Firmware	2.41.9
Eq-3	Homematic Ccu2 Firmware	2.45.6
Eq-3	Homematic Ccu2 Firmware	2.45.7
Eq-3	Homematic Ccu2 Firmware	2.47.10
Eq-3	Homematic Ccu2 Firmware	2.47.12
Eq-3	Homematic Ccu2 Firmware	2.47.15

References

https://github.com/psytester/psytester.github.io/blob/master/_posts/hacking_and_pentests/CVEs/2019-03-27-CVE-2019-9583.mdExploit, Third Party Advisory
https://psytester.github.io/CVE-2019-9583/Exploit, Third Party Advisory
https://github.com/psytester/psytester.github.io/blob/master/_posts/hacking_and_pentests/CVEs/2019-03-27-CVE-2019-9583.mdExploit, Third Party Advisory
https://psytester.github.io/CVE-2019-9583/Exploit, Third Party Advisory

Timeline

Published: Aug 14, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-9583?

How severe is CVE-2019-9583?

CVE-2019-9583 has a CVSS score of 8.2/10 (HIGH severity). The EPSS model estimates a 1.88% probability of exploitation in the next 30 days.

How do I fix CVE-2019-9583?

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-2019-9583?

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

Scan your code now

Source: NVD / NIST