Situation You bake non-liquid dairy food and non-liquid neutral/pareve food in one oven at the same time.
Status

• You may not eat the pareve food with meat food (and certainly not dairy food with the meat!), but
• The utensil (pan) of the pareve food does not become dairy.

Note The same applies if you cook non-liquid meat with non-liquid pareve food.
Note If one or both of the foods were liquid, the utensil might be non-kosher. Consult a rabbi.