Schneider Electric StruxureWare SCADA Expert Vijeo Citect 7.40 Vijeo Citect 7.20 through 7.30SP1 CitectSCADA 7.20 through 7.30SP1 StruxureWare PowerSCADA Expert 7.30 through 7.30SR1 and PowerLogic SCADA 7.20 through 7.20SR1 do not properly handle exceptions which allows remote attackers to cause a denial of service via a crafted packet.