This indicates an attack attempt to exploit a Command Injection Vulnerability in Netgear ProSAFE NMS300.
The vulnerability is due to improper validation of the parameters in SettingConfigController class. A remote, authenticated attacker can exploit this vulnerability by sending a crafted request to the target server. Successful exploitation could result in the execution of arbitrary commands under the security context of SYSTEM.
Netgear ProSAFE NMS300 18.104.22.168 and prior
System Compromise: Remote attackers can gain control of vulnerable systems.
Apply the most recent upgrade or patch from the vendor.