How severe is CVE-2019-14473?

CVE-2019-14473 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-14473 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-14473?

CVE-2019-14473 primarily affects Eq-3 Ccu2 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-14473?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2019-14473 published?

CVE-2019-14473 was published on 2019-08-06 and last updated on 2026-06-17.

CVE-2019-14473

CVE-2019-14473 is a high-severity vulnerability in Eq-3 Ccu2 Firmware with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-862.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: Eq-3 Ccu2 Firmware
Published: 2019-08-06
Last modified: 2026-06-17

Description

eQ-3 Homematic CCU2 and CCU3 use session IDs for authentication but lack authorization checks. Consequently, a valid guest level or user level account can create a new admin level account, read the service messages, clear the system protocol or modify/delete internal programs, etc. pp.

Frequently asked questions

What is CVE-2019-14473?: eQ-3 Homematic CCU2 and CCU3 use session IDs for authentication but lack authorization checks. Consequently, a valid guest level or user level account can create a new admin level account, read the service messages, clear the system protocol or modify/delete internal programs, etc. pp.
How severe is CVE-2019-14473?: CVE-2019-14473 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-14473 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-14473?: CVE-2019-14473 primarily affects Eq-3 Ccu2 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-14473?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-14473 published?: CVE-2019-14473 was published on 2019-08-06 and last updated on 2026-06-17.

References

https://psytester.github.io/CVE-2019-14473

Affected products (2)

cpe:2.3:o:eq-3:ccu2_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:eq-3:ccu3_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Eq-3 Ccu2 Firmware

CVE-2019-10122 — Critical (CVSS 9.8): eQ-3 HomeMatic CCU2 devices before 2.41.9 and CCU3 devices before 3.43.16 have buffer overflows in the ReGa ise GmbH…
CVE-2019-10121 — Critical (CVSS 9.8): eQ-3 HomeMatic CCU2 devices before 2.41.8 and CCU3 devices before 3.43.15 use session IDs for authentication but lack…
CVE-2019-10119 — Critical (CVSS 9.8): eQ-3 HomeMatic CCU2 devices before 2.41.8 and CCU3 devices before 3.43.16 use session IDs for authentication but lack…
CVE-2019-14423 — High (CVSS 8.8): A Remote Code Execution (RCE) issue in the addon CUx-Daemon 1.11a of the eQ-3 Homematic CCU-Firmware 2.35.16 until…
CVE-2019-10120 — High (CVSS 8.8): On eQ-3 HomeMatic CCU2 devices before 2.41.8 and CCU3 devices before 3.43.16, automatic login configuration (aka…
CVE-2019-14475 — High (CVSS 7.5): eQ-3 Homematic CCU2 2.47.15 and prior and CCU3 3.47.15 and prior use session IDs for authentication but lack…

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