Directory traversal vulnerability in CodeBrws.asp in Microsoft IIS 5.0 allows remote attackers to view source code and determine the existence of arbitrary files via a hex-encoded "%c0%ae%c0%ae" string, which is the Unicode representation for ".." (dot dot).
https://exchange.xforce.ibmcloud.com/vulnerabilities/8853
https://euvd.enisa.europa.eu/vulnerability/EUVD-2002-1723
http://www.securityfocus.com/bid/4525