Directory traversal vulnerability in ADA Image Server (ImgSvr) 0.4 allows remote attackers to read arbitrary files or list directories via hex-encoded "..//" sequences ("%2e%2e%2f%2f"). NOTE: it was later reported that 0.6.21 and earlier is also affected.
https://exchange.xforce.ibmcloud.com/vulnerabilities/16680
http://www.securityfocus.com/archive/1/485490/100/100/threaded
http://secunia.com/advisories/11287
http://members.lycos.co.uk/r34ct/main/ADA%20Image%20Server%20%28ImgSvr%29%200.4.txt