How severe is CVE-2019-14474?

CVE-2019-14474 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2019-14474 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-2019-14474?

CVE-2019-14474 affects Eq-3 Ccu3 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-14474?

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-2019-14474 published?

CVE-2019-14474 was published on 2019-08-07 and last updated on 2026-06-17.

CVE-2019-14474

CVE-2019-14474 is a high-severity vulnerability in Eq-3 Ccu3 Firmware with a CVSS 3.x base score of 7.5. 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-20.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Eq-3 Ccu3 Firmware
Published: 2019-08-07
Last modified: 2026-06-17

Description

eQ-3 Homematic CCU3 3.47.15 and prior has Improper Input Validation in function 'Call()' of ReGa core logic process, resulting in the ability to start a Denial of Service. Due to Improper Authorization an attacker can obtain a session ID from CVE-2019-9583 or a valid guest/user/admin account can start this attack too.

Frequently asked questions

What is CVE-2019-14474?: eQ-3 Homematic CCU3 3.47.15 and prior has Improper Input Validation in function 'Call()' of ReGa core logic process, resulting in the ability to start a Denial of Service. Due to Improper Authorization an attacker can obtain a session ID from CVE-2019-9583 or a valid guest/user/admin account can start this attack too.
How severe is CVE-2019-14474?: CVE-2019-14474 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2019-14474 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-2019-14474?: CVE-2019-14474 affects Eq-3 Ccu3 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-14474?: 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-2019-14474 published?: CVE-2019-14474 was published on 2019-08-07 and last updated on 2026-06-17.

References

https://psytester.github.io/CVE-2019-14474

Affected products (1)

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

More vulnerabilities in Eq-3 Ccu3 Firmware

CVE-2020-12834 — Critical (CVSS 9.8): eQ-3 Homematic Central Control Unit (CCU)2 through 2.51.6 and CCU3 through 3.51.6 allow Remote Code Execution in the…
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…
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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…

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