This indicates an attack attempt to exploit a Command Injection Error Vulnerability in Fortinet FortiWeb.
The vulnerability is due to insufficient input validation of the name parameter in requests sent to the SAML server configuration page. A remote, authenticated attacker can exploit this vulnerability by sending a crafted request to the target server. Successful exploitation could result in arbitrary command execution with privileges of the root user.
Fortinet FortiWeb 6.2.x prior to 6.2.5
Fortinet FortiWeb 6.3.x prior to 6.3.15
Fortinet FortiWeb 6.4.0
System Compromise: Remote attackers can gain control of vulnerable systems.
Apply the most recent upgrade or patch from the vendor.