Buffer overflow in POP3 and IMAP servers in the MERCUR mail server suite allows remote attackers to cause a denial of service.
Buffer overflow in the MERCUR WebView WebMail server allows remote attackers to cause a denial of service via a long mail_user parameter in the GET request.
The IMAP4 service in MERCUR Messaging 2005 before Service Pack 4 allows remote attackers to cause a denial of service (crash) via a message with a long subject field.