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CVE-2019-9727

24
FAUCET Score

CVE-2019-9727 describes an unauthenticated password hash disclosure vulnerability in eQ-3 AG Homematic CCU3 firmware versions 3.43.15 and earlier. This flaw allows remote, unauthenticated attackers to retrieve GUI user password hashes via the User.getUserPWD method. With a CVSS score of 7.5 (High), the vulnerability is easily exploitable over the network with low complexity, potentially leading to unauthorized access to the device. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.43.15CPE matchmatch criteria
cpe:2.3:o:eq-3:ccu3_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.17%
Probability of exploitation in next 30 days
EPSS Percentile
80.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0216 is in the 65th percentile among its peer group of 51,455 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

atomic111.github.io / article/homematic-ccu3-unauthenticated-password-hash-disclosure
ExploitThird Party Advisory