Yeah tbh it's not as bad as he claimed. I doubt this is actually rated 9.9:

>A remote unauthenticated attacker can silently replace existing printers’ (or install new ones) IPP urls with a malicious one, resulting in arbitrary command execution (on the computer) when a print job is started (from that computer).

>WAN / public internet: a remote attacker sends an UDP packet to port 631. No authentication whatsoever.

>LAN: a local attacker can spoof zeroconf / mDNS / DNS-SD advertisements (we will talk more about this in the next writeup ) and achieve the same code path leading to RCE.

Still, sucks for linux desktop users. Looks like any random device on your wifi/vpn can screw you over