CVE-2023-5702: Viessmann Vitogate 300 Firmware

Medium severity, CVSS 6.5. EPSS: 14.5% chance of exploitation in the next 30 days.

A vulnerability was found in Viessmann Vitogate 300 up to 2.1.3.0 and classified as problematic. Affected by this issue is some unknown functionality of the file /cgi-bin/. The manipulation leads to direct request. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-243140. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

• Viessmann Vitogate 300 Firmware: up to and including 2.1.3.0

Published 2023-10-23. Last modified 2026-06-17.