CVE-2019-19228 — Fronius Solar Inverter devices before 3

Fronius Solar Inverter devices before 3.14.1 (HM 1.12.1) allow attackers to bypass authentication because the password for the today account is stored in the /tmp/web_users.conf file.

01What is this vulnerability?

Fronius Solar Inverter devices before 3.14.1 (HM 1.12.1) allow attackers to bypass authentication because the password for the today account is stored in the /tmp/web_users.conf file.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

08Timeline

• Published: 2019-12-04T18:52:09.000Z
• Last modified: 2024-08-05T02:09:39.342Z

09References

• seclists.org — https://seclists.org/bugtraq/2019/Dec/5
• sec-consult.com — https://sec-consult.com/en/blog/advisories/multiple-vulnerabilites-in-fronius-so…
• packetstormsecurity.com — http://packetstormsecurity.com/files/155562/Fronius-Solar-Inverter-Series-Insecu…