The Frontend component in Sophos UTM with firmware 9.405-5 and earlier allows local administrators to obtain sensitive password information by reading the "value" field of the SMTP user settings in the notifications configuration tab.
http://www.securitytracker.com/id/1036931
http://www.securityfocus.com/bid/93266
http://www.securityfocus.com/archive/1/539518/100/0/threaded