Heap-based buffer overflow in MW6 Technologies Barcode ActiveX control (Barcode.MW6Barcode.1, Barcode.dll) 3.0.0.1 allows remote attackers to execute arbitrary code via a long Supplement property.
Stack-based buffer overflow in the BeginPrint method in a certain ActiveX control in RKD Software (barcodetools.com) BarCodeAx.dll 4.9 allows remote attackers to execute arbitrary code via a long argument.