00 Ranger Transmission leak

Hi I have a 2000 Ford ranger that i just bought with 28,000 mile. Excellent condition, one owner well taken care of with all the service records. I purchase the car from a franchise dealer. THe transmission leaks, very very slowly from the fill an drain plug. The plugs look Brand new in excellent condition. I think they might of recently change the trans fluid. what do you think the problem is? and how serious?

Hi I have a 2000 Ford ranger that i just bought with 28,000 mile. Excellent condition, one owner well taken care of with all the service records. I purchase the car from a franchise dealer. THe transmission leaks, very very slowly from the fill an drain plug. The plugs look Brand new in excellent condition. I think they might of recently change the trans fluid. what do you think the problem is? and how serious?
they probably didnt change the gaskets on the plugs

The gasket? kinda like a washer for the bolt?