The Cisco VPN 5000 Client for MacOS before 5.2.2 records the most recently used login password in plaintext when saving "Default Connection" settings, which could allow local users to gain privileges.
http://www.securityfocus.com/bid/5736
http://www.iss.net/security_center/static/10129.php
http://www.cisco.com/warp/public/707/vpn5k-client-multiple-vuln-pub.shtml