Easy File Sharing (EFS) Web Server 4.0, when running on an NTFS file system, allows remote attackers to read arbitrary files under the web root by appending "::$DATA" to the end of a HTTP GET request, which accesses the alternate data stream.
https://www.exploit-db.com/exploits/2690
https://exchange.xforce.ibmcloud.com/vulnerabilities/29925
https://euvd.enisa.europa.eu/vulnerability/EUVD-2006-5699