Buffer overflow in IMAP server in Netscape Messaging Server 4.15 Patch 2 allows local users to execute arbitrary commands via a long LIST command.
https://exchange.xforce.ibmcloud.com/vulnerabilities/5292
http://www.securityfocus.com/bid/1721
http://archives.neohapsis.com/archives/bugtraq/2000-09/0334.html