Directory traversal vulnerability in Essentia Web Server 2.1 allows remote attackers to read arbitrary files via a .. (dot dot) in a URL.
http://www.securityfocus.com/bid/4160
http://www.ntbugtraq.com/default.asp?pid=36&sid=1&A2=ind0202&L=ntbugtraq&F=P&S=&P=10201
http://www.iss.net/security_center/static/8248.php