Buffer overflow in the UnitelWay Windows Device Driver, as used in Schneider Electric Unity Pro 6 and earlier, OPC Factory Server 3.34, Vijeo Citect 7.20 and earlier, Telemecanique Driver Pack 2.6 and earlier, Monitor Pro 7.6 and earlier, and PL7 Pro 4.5 and earlier, allows local users, and possibly remote attackers, to execute arbitrary code via an unspecified system parameter.

Heap-based buffer overflow in Automated Solutions Modbus/TCP Master OPC Server before 3.0.2 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a MODBUS response packet with a crafted length field.

Gesytec Easylon OPC Server before 2.3.44 does not properly validate server handles, which allows remote attackers to execute arbitrary code or cause a denial of service via unspecified network traffic to the OLE for Process Control (OPC) interface, probably related to free operations on arbitrary memory addresses through certain Remove functions, and read and write operations on arbitrary memory addresses through certain Set, Read, and Write functions.

Unspecified vulnerability in the IOPCServer::RemoveGroup function in the OPCDA interface in Takebishi Electric DeviceXPlorer OLE for Process Control (OPC) Server before 3.12 Build3 allows remote attackers to execute arbitrary code via unspecified vectors involving access to arbitrary memory. NOTE: this issue affects the (1) HIDIC, (2) MELSEC, (3) FA-M3, (4) MODBUS, and (5) SYSMAC OPC Servers.