Vulnerability in Exchange Server 2003 Could Lead t 1.0

Users who access their mailboxes through an Exchange 2003 front-end server and Outlook Web Access might get connected to another users mailbox if that other mailbox is (1) hosted on the same back-end mailbox server and (2) if that mailbox has been recently accessed by its owner. Attackers seeking to exploit this vulnerability could not predict which mailbox they might become connected to. The vulnerability causes random and unreliable access to mailboxes and is specifically limited to mailboxes that have recently been accessed through OWA.