Edit Update:

Those of you asking about the rTorrent "vulnerability", it's not a vulnerability but the possibility to misconfigure your client in a dangerous way. This differs from the uTorrent 3.x vulnerability in that it makes no difference how you configure uTorrent 3.x it can be exploited no matter what.

Transmission < 2.93 is a slightly more complex issue as this can be resolved using a configuration change, but the default configuration is exploitable.

So, in short:
uT 2.2.1/TR < 2.93 : Update config or change client
rTorrent : Don't be a moron
uT 3.x : Banned for critical vulnerability
BT 7.x: Banned for critical vulnerability

Great information to share, thanks @MindHunter