OMG My vBulletin Forum Hacked
 

I have just tried to log into my forum and found that it has been hacked.
My password wasn't recognised, when I tried to get a new password sent my email was not recognised.
So I logged into my host cPanel and checked the user database. I found that someone had changed the admin email and password.

Anyone else had this? and are vBulletin aware of this major security floor ( i am running vBulletin® Version 3.8.3)