Can anyone clarify? Is this a vulnerability of all My Book drives or just ones that connect to a cloud / online service? I have one of these but haven't plugg

Can anyone clarify? Is this a vulnerability of all My Book drives or just ones that connect to a cloud / online service? I have one of these but haven't plugged it in for a while. However, I don't remember using any online service with it. It just had a bunch of movies.