"When Zoom issued an update, the updater function would install the new package after checking that it had been cryptographically signed by Zoom. But a bug in how the checking method was implemented meant that giving the updater any file with the same name as Zoom’s signing certificate would be enough to pass the test — so an attacker could substitute any kind of malware program and have it be run by the updater with elevated privilege."
This is beyond absurd.