CVE-2001-1520
Xircom REX 6000 allows local users to obtain the 10 digit PIN by starting a serial monitor, connecting to the personal digital assistant (PDA) via Rextools, and capturing the cleartext PIN.
Date published : 2005-07-14
http://www.securityfocus.com/bid/3574
http://archives.neohapsis.com/archives/bugtraq/2001-11/0187.html