Vitogate 300 Firmware - RCE (CVE-2023-45852)

CVE-2023-45852 is a critical vulnerability in Vitogate 300 version 2.1.3.0 that allows unauthenticated attackers to bypass authentication and execute arbitrary commands by injecting shell metacharacters into the ipaddr parameter of the /cgi-bin/vitogate.cgi endpoint. This flaw could be exploited remotely to gain full control over the affected device, leading to potential data breaches, system compromise, or disruption of services.

CrowdSec has been tracking this vulnerability and its exploits since 10th of September 2025.

According to CrowdSec data, while opportunistic exploitation dominates, a portion of threat actors trying to exploit CVE-2023-45852 apply basic targeting methods such as port or service detection. This indicates emerging patterns of selective targeting. In addition, according to the CrowdSec network, attack volume against CVE-2023-45852 has dipped slightly compared to the previous week. Although still commonly targeted, the decline suggests a cooling-off period. Long-term relevance remains, but attention is waning.

Attackers exploit the /cgi-bin/vitogate.cgi endpoint by sending crafted JSON data to the ipaddr parameter, injecting shell metacharacters to execute arbitrary commands on vulnerable Viessmann Vitogate 300 devices.