Print spooler vulnerabilities - looking for in-depth research.

Hey guys, as I'm everyone already knows print spooler nightmare started all the way back in June of last year if I am not mistaken. Since then it feels like in every single patch Tuesday Microsoft releases we can see some sort of vulnerability that is caused by this service. Does anyone have some in-depth articles that explain why is this service so problematic? Thanks in advance

cybersecurity print print spooler research vulnerabilities