How severe is CVE-2019-9727?

CVE-2019-9727 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 high, integrity none, and availability none.

Is CVE-2019-9727 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-9727?

CVE-2019-9727 affects Eq-3 Ccu3 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-9727?

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-2019-9727 published?

CVE-2019-9727 was published on 2019-05-13 and last updated on 2026-06-17.

CVE-2019-9727

CVE-2019-9727 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-306.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-306
Affected product: Eq-3 Ccu3 Firmware
Published: 2019-05-13
Last modified: 2026-06-17

Description

Unauthenticated password hash disclosure in the User.getUserPWD method in eQ-3 AG Homematic CCU3 3.43.15 and earlier allows remote attackers to retrieve the GUI password hashes of GUI users. This vulnerability can be exploited by unauthenticated attackers with access to the web interface.

Frequently asked questions

What is CVE-2019-9727?: Unauthenticated password hash disclosure in the User.getUserPWD method in eQ-3 AG Homematic CCU3 3.43.15 and earlier allows remote attackers to retrieve the GUI password hashes of GUI users. This vulnerability can be exploited by unauthenticated attackers with access to the web interface.
How severe is CVE-2019-9727?: CVE-2019-9727 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 high, integrity none, and availability none.
Is CVE-2019-9727 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-9727?: CVE-2019-9727 affects Eq-3 Ccu3 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-9727?: 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-2019-9727 published?: CVE-2019-9727 was published on 2019-05-13 and last updated on 2026-06-17.

References

https://atomic111.github.io/article/homematic-ccu3-unauthenticated-password-hash-disclosure

Affected products (1)

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

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