Unknown vulnerability in mail for Solaris 2.6 through 9 allows local users to read the email of other users.
https://exchange.xforce.ibmcloud.com/vulnerabilities/11303
http://www.securitytracker.com/id?1006084
http://www.securityfocus.com/bid/6838
http://sunsolve.sun.com/search/document.do?assetkey=1-26-50751-1