All it is going to take is a single one of the external servers to be compromised and then that person has a free key to the kingdom for almost every barracuda product. Wanna see whos vulnerable? Here you go
. Over 13000
results in .2 seconds with one search. Im sure not all of those are barracuda products, but the VAST majority are, and theres loads more that have different configurations than what that search looked for.