This is an awesome tutorial for examining and finding and exploiting the latest RealVNC Auth Vulnerability. I have a link to a scan tool that scans for this, and I have to find it. I suppose Metasploit will have this packaged already or soon. The fun thing about this is that I imagine most IT shops do not upgrade all their old VNC instances very much and either just use the same executable stored locally or always download a new one. I would bet many admins are still blissfully ignorant of this issue, and thus still have many vulnerable installs still sitting around. I consider this a must-have scan for any VNC instances found on a target network.
Update: the scanner