The test connection functionality in the NetAudit section of Opsview Monitor before 5.3.1 and 5.4.x before 5.4.2 is vulnerable to command injection due to improper sanitization of the rancid_password parameter.
https://www.coresecurity.com/advisories/opsview-monitor-multiple-vulnerabilities
https://seclists.org/fulldisclosure/2018/Sep/3