HOME VULNERABILITIESCVE-2019-9583

HIGH

CVE-2019-9583

CWE-400Published: August 14, 2019· Updated: Jun 17, 2026

8.2

CVSS v3.1

Official 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.

Technical Analysis

CVE-2019-9583 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 8.2.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityHigh

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

Affected Vendors & Products

eq-34 product(s)

homematic ccu3 firmwarehomematic ccu3homematic ccu2 firmwarehomematic ccu2

Source: NVD CPE · 18 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://github.com/psytester/psytester.github.io/blob/master/_posts/hacking_and_pentests/CVEs/2019-03-27-CVE-2019-9583.md

ADVISORYhttps://psytester.github.io/CVE-2019-9583/

ADVISORYhttps://github.com/psytester/psytester.github.io/blob/master/_posts/hacking_and_pentests/CVEs/2019-03-27-CVE-2019-9583.md

ADVISORYhttps://psytester.github.io/CVE-2019-9583/

All References (4)

→

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

Quick Facts

CVE IDCVE-2019-9583

CVSS Score8.2 / 10

SeverityHIGH

WeaknessCWE-400

CISA KEVNo

Affected1 vendor(s)

PublishedAug 14, 2019

Related CVEs (CWE-400)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2019-9583 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.

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