CVE-2003-0258
Cisco VPN 3000 series concentrators and Cisco VPN 3002 Hardware Client 3.5.x through 4.0.REL, when enabling IPSec over TCP for a port on the concentrator, allow remote attackers to reach the private network without authentication.
Date published : 2003-05-08
http://www.kb.cert.org/vuls/id/727780
http://www.cisco.com/warp/public/707/cisco-sa-20030507-vpn3k.shtml