A vulnerability, which was classified as critical , has been found in Totolink CA750-PoE 6.2c.510 . Impacted is the function setNetworkDiag of the file /cgi-bin/cstecgi.cgi of the component Setting Handler . The manipulation of the argument NetDiagHost/NetDiagPingNum/NetDiagPingSize/NetDiagPingTimeOut/NetDiagTracertHop is directly passed by the attacker/so we can control the NetDiagHost/NetDiagPingNum/NetDiagPingSize/NetDiagPingTimeOut/NetDiagTracertHop leads to os command injection. This vulner