Can a cheesecake spoil if sitting out in a very cool room for 12 hours?

I accidentally left my cheesecake overnight in the oven after baking it. (the oven was off). It is winter here in Australia and the kitchen is very cool. It was made with cream cheese, sugar, sour cream and eggs. It looks great. I hate to throw it out. Any chefs out there have advice? Thank-you.