Ok going off the script a little.

I actually just had the brain wave to start up my PC House Doctor service again.

Dollar signs appear in my eyes when I remember back to the XP RPC vulnerability and how much business I did from that. This seriously, seriously sounds reminiscent of that - except the threat is directly inside the OS now it's baked in.

like data exfiltration or ... installation

Bad actors are going to have a fucking field day.