Vulnerability in Viessmann Vitogate 300

CVE-2023-5222

A vulnerability classified as critical was found in Viessmann Vitogate 300 up to 2.1.3.0. This vulnerability affects the function isValidUser of the file /cgi-bin/vitogate.cgi of the component Web Management Interface. The manipulation leads to use of hard-coded password. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-240364. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.804 (99.6th percentile), scored .

High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2023-5222: rose from 0.745 to 0.804.

EPSS over last 30 days · oldest: 0.745 · newest: 0.804 · change: +0.059

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2023-5222?
CVE-2023-5222 is a medium-severity vulnerability in Viessmann Vitogate 300, classified under Use of Hard-coded Password. CVSS score: 6.3/10. Published 2023-09-27.
How severe is CVE-2023-5222?
Medium severity. CVSS v3 base score is 6.3 out of 10.
Is CVE-2023-5222 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.