The IMWeb.IMWebControl.1 ActiveX control in IMWeb.dll 7.0.0.x, and possibly IMWebControl.dll, in iMesh 7.1.0.x and earlier allows remote attackers to execute arbitrary code via a certain argument to the SetHandler method.
Improper Input Validation The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly.