What is CVE-2017-17691?

CVE-2017-17691 is a high-severity vulnerability in Contronics Homeputer Cl Studio Fur Homematic, classified under Insufficiently Protected Credentials. CVSS score: 8.1/10. Published 2018-09-07.

How severe is CVE-2017-17691?

High severity. CVSS v3 base score is 8.1 out of 10.

Vulnerability in Contronics Homeputer Cl Studio Fur Homematic

CVE-2017-17691

Homeputer CL Studio fur HomeMatic 4.0 Rel 160808 and earlier uses cleartext to exchange the username and password between server and client instances, which allows remote attackers to obtain sensitive information via a man in the middle attack.

Published 2018-09-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.010 (62.3th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 62.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Contronics Homeputer Cl Studio Fur Homematic

Weakness classification (CWE)

CWE-522 — Insufficiently Protected Credentials

References

www.compass-security.com/fileadmin/Datein/Research/Advisories/CSNC-2017-031_hom… (Exploit, Third Party Advisory, Mitigation)

Frequently asked questions

What is CVE-2017-17691?: CVE-2017-17691 is a high-severity vulnerability in Contronics Homeputer Cl Studio Fur Homematic, classified under Insufficiently Protected Credentials. CVSS score: 8.1/10. Published 2018-09-07.
How severe is CVE-2017-17691?: High severity. CVSS v3 base score is 8.1 out of 10.