CVE-2017-17691: Homeputer CL Studio fur HomeMatic 4.0 Rel 160808 and earlier uses cleartext to exchange the username and passw

Q: How do I fix CVE-2017-17691?

homeputer cl studio fur homematic: upgrade to 4.0. Exact commands for each OS are on this page.

Q: Is CVE-2017-17691 being exploited?

CVE-2017-17691 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2017-17691 affect?

CVE-2017-17691 affects homeputer cl studio fur homematic. Severity is high (CVSS 8.1). 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 att

Q: How urgent is CVE-2017-17691?

Priority 54/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 8.1REMOTEUPGRADE

CVE-2017-17691 is a high-severity flaw (CVSS 8.1) affecting homeputer cl studio fur homematic. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	1.0% (top 36%)
CISA exploited list	No
Weakness	CWE-522
Published	2018-09-07
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: contronics

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2018-09-07 22:29 UTCPublished CVE record published
2026-06-17 01:11 UTCUpdated Record last modified

contronics homeputer cl studio fur homematic UPGRADE

Affected: < 4.0

Fixed in: 4.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy homeputer-cl-studio-fur-homematic || rpm -q homeputer-cl-studio-fur-homematic || homeputer-cl-studio-fur-homematic --version

2. UPGRADE to 4.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade homeputer-cl-studio-fur-homematic

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade homeputer-cl-studio-fur-homematic

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2017-17691?

homeputer cl studio fur homematic: upgrade to 4.0. Exact commands for each OS are on this page.

Is CVE-2017-17691 being exploited?

CVE-2017-17691 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2017-17691 affect?

CVE-2017-17691 affects homeputer cl studio fur homematic. Severity is high (CVSS 8.1). 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 att

How urgent is CVE-2017-17691?

Priority 54/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

References

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