Atrium Software Mercur Mailserver 3.3

Buffer overflow in the base64 decoder in MERCUR Mailserver 4.2 before SP3a allows remote attackers to cause a denial of service and possibly execute arbitrary code via a long (1) AUTH command to the POP3 server or (2) AUTHENTICATE command to the IMAP server.

Buffer overflow in the control service for MERCUR Mailserver 4.2 allows remote attackers to execute arbitrary code via a long password.