Nagios XI 5.5.6 through 5.7.5 is susceptible to authenticated remote command injection. There is improper sanitization of authenticated user-controlled input by a single HTTP request via the file /usr/local/nagiosxi/html/includes/configwizards/windowswmi/windowswmi.inc.php. This in turn can lead to remote code execution, by which an attacker can execute malware, obtain sensitive information, modify data, and/or gain full control over a compromised system without entering necessary credentials.
View the template here CVE-2021-25296.yaml
References:
http://packetstormsecurity.com/files/170924/Nagios-XI-5.7.5-Remote-Code-Execution.html