what are my rights if i am an exector of an estate and the property is in foreclosure

You have the right to be a party to the foreclosure action, receive notice, and participate in the proceedings.  If the foreclosure was started while the decedent was alive, and then the property owner died during the foreclosure, the foreclosure complaint has to be amended to include the estate.  You should notify the foreclosure attorney that the property owner is deceased, that you are the executor, and you want all of the pleadings.