The Pole suffered serious injuries during a rally crash in Italy in February 2011 and has been taking part in a couple of rallies this season.
"For the future I have no plans. I am still on the stage of rehabilitation, for sure I would love to compete in high level championships, either in rally or [on the] circuit, let's see. Up to now I have done some rallies, I did some testing on the race track and I hope my hand will improve and my condition will improve. We will see what the future will bring".
Kubica was speaking to reporters at the Rally di Como, where he is competing in a WRC-winning Citroen C4 car.
"I have a few limitations but recently I have driven on the race track. I have big limitations of my arm which doesn't allow me to test single seaters which is unfortunate for the moment but I can't do nothing which is why I am running rally cars or let's say cars with the roof on the racetrack"
Kubica raced for BMW Sauber and Renault between 2006 and 2010, winning the Canadian Grand Prix in 2008.
"It has been a long time since I stopped with Formula One so unfortunately my contacts are very limited because all these months I have been concentrating on coming back and getting my health and body back to the best condition".