CVE-2019-9583

Exp

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.

Published: 2019-08-14 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-9583 is rated High Exploit Risk (60.3/100): CVSS High severity, with low exploitation likelihood (EPSS 0.15%). 2 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2019-9583

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2019-9583

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-12-28 0.16% 0.15% -0.01%
2 2025-12-27 0.15% 0.16% +0.01%
3 2025-10-28 — 0.15% —

Full EPSS history (13 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-9583

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.2 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 4.2 [email protected]
6.4 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 4.9 [email protected]

Weakness enumeration for CVE-2019-9583

Affected software / configurations for CVE-2019-9583

Vendor Product Version Raw CPE
eq-3 homematic_ccu3_firmware 3.41.11 cpe:2.3:o:eq-3:homematic_ccu3_firmware:3.41.11:*:*:*:*:*:*:*
eq-3 homematic_ccu3_firmware 3.43.16 cpe:2.3:o:eq-3:homematic_ccu3_firmware:3.43.16:*:*:*:*:*:*:*
eq-3 homematic_ccu3_firmware 3.45.5 cpe:2.3:o:eq-3:homematic_ccu3_firmware:3.45.5:*:*:*:*:*:*:*
eq-3 homematic_ccu3_firmware 3.45.7 cpe:2.3:o:eq-3:homematic_ccu3_firmware:3.45.7:*:*:*:*:*:*:*
eq-3 homematic_ccu3_firmware 3.47.10 cpe:2.3:o:eq-3:homematic_ccu3_firmware:3.47.10:*:*:*:*:*:*:*
eq-3 homematic_ccu3_firmware 3.47.15 cpe:2.3:o:eq-3:homematic_ccu3_firmware:3.47.15:*:*:*:*:*:*:*
eq-3 homematic_ccu2_firmware — cpe:2.3:o:eq-3:homematic_ccu2_firmware:-:*:*:*:*:*:*:*
eq-3 homematic_ccu2_firmware 2.35.16 cpe:2.3:o:eq-3:homematic_ccu2_firmware:2.35.16:*:*:*:*:*:*:*
eq-3 homematic_ccu2_firmware 2.41.5 cpe:2.3:o:eq-3:homematic_ccu2_firmware:2.41.5:*:*:*:*:*:*:*
eq-3 homematic_ccu2_firmware 2.41.8 cpe:2.3:o:eq-3:homematic_ccu2_firmware:2.41.8:*:*:*:*:*:*:*
eq-3 homematic_ccu2_firmware 2.41.9 cpe:2.3:o:eq-3:homematic_ccu2_firmware:2.41.9:*:*:*:*:*:*:*
eq-3 homematic_ccu2_firmware 2.45.6 cpe:2.3:o:eq-3:homematic_ccu2_firmware:2.45.6:*:*:*:*:*:*:*
eq-3 homematic_ccu2_firmware 2.45.7 cpe:2.3:o:eq-3:homematic_ccu2_firmware:2.45.7:*:*:*:*:*:*:*
eq-3 homematic_ccu2_firmware 2.47.10 cpe:2.3:o:eq-3:homematic_ccu2_firmware:2.47.10:*:*:*:*:*:*:*
eq-3 homematic_ccu2_firmware 2.47.12 cpe:2.3:o:eq-3:homematic_ccu2_firmware:2.47.12:*:*:*:*:*:*:*
eq-3 homematic_ccu2_firmware 2.47.15 cpe:2.3:o:eq-3:homematic_ccu2_firmware:2.47.15:*:*:*:*:*:*:*

References for CVE-2019-9583

cvelogic Threat Intelligence