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.

CrowdSec network observations suggest that most exploitation of CVE-2023-45852 involves focused reconnaissance to identify viable targets. Attackers typically tailor their campaigns based on system exposure and configuration. It is unlikely that a given attack is accidental. CrowdSec network telemetry also shows that exploitation of CVE-2023-45852 has significantly declined over the past week. Attack volumes are well below the long-term average, suggesting attackers are rapidly losing interest. The vulnerability appears to be falling out of active use across most threat landscapes.

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.