Insertion of Sensitive Information into Log File vulnerability in ABB QCS 800xA, ABB QCS AC450, ABB Platform Engineering Tools. An attacker, who already has local access to the QCS nodes, could successfully obtain the password for a system user account. Using this information, the attacker could have the potential to exploit this vulnerability to gain control of system nodes. This issue affects QCS 800xA: from 1.0;0 through 6.1SP2; QCS AC450: from 1.0;0 through 5.1SP2; Platform Engineering Tools: from 1.0:0 through 2.3.0.