mrwjd,
This isn't really an Adobe issue. This is a Java issue. Oracle added extra security requirements for Java browser applets in Java 7 (1.7) that didn't exist when ColdFusion was released.
You could submit a bug to Adobe to fix the Java applets issue. But, since Java applets are prone to security issues and are a HUGE vector for hacking, you would be better served to take Fernis' advice and replace references to CFGRID with a JavaScript solution such as JQGrid, DataTables, ExtJS Grid, or Dojo DataGrid.
-Carl V.
