What method is the cell calling on the view controller in controller in question?
Is the view controller a standard view controller, like a tableview controller?
Is the Cell a standard tableviewCell or a custom subclass?
A quicklook in the documentation for UITableviewController tells me there is no reason a standard cell would call back to the view controller. Also looking in the documents UITableview has the a number of methods for finding indexPath of a cell or alternatively a point in the tableview.
The bigger question could why?
What are you trying to do if you are trying to get the cells to respond to a gesture then there are ways to attach a gesture recogniser to the tableview make make it seem like its acting on the cells from the users perspective. A lot of the reasons for a cell to send a message back have easier more effective and more reliable ways of going about them.