What is it called after there is a patch against it? Does it just stay at like a 27-day if it takes 27 days to patch? I feel like in common parlance calling so

What is it called after there is a patch against it? Does it just stay at like a 27-day if it takes 27 days to patch? I feel like in common parlance calling something a 0-day would imply that it is something the manufacturer didn't expect and has no solution for which is a big problem. I guess whatever communicates information best. I kind of feel like we just use 0-day to mean big problems, everything else is just a bug that has some age, and then fixed stuff doesn't get remembered. Right? That seems fairly useful, at least in communicating to the general tech media.