This indicates an attack attempt against an OS Command Injection vulnerability in Centreon.
The vulnerability is due to insufficient sanitizing of user supplied inputs in the application. A remote attacker may be able to exploit this to execute arbitrary command within the context of the application.
Centreon before 2.8.30
Centreon 18.10.x before 18.10.8
Centreon 19.04.x before 19.04.5
Centreon 19.10.x before 19.10.2
System Compromise: Remote attackers can gain control of vulnerable systems.
Upgrade to the latest version available from the website.