Buffer overflow in the IMAP daemon in Ipswitch Collaboration Suite 2006.02 and earlier allows remote authenticated users to execute arbitrary code via a long FETCH command.
Ipswitch Ipswitch Collaboration Suite Standard Edition 2006
Ipswitch Ipswitch Collaboration Suite Premium Edition 2006
Ipswitch IMail Secure Server 2006
This vulnerability may cause a DoS to the server.
The vender has released fixes,please update your server as soon as possible.