PY Software Active Webcam WebServer (webcam.exe) 5.5 allows remote attackers to determine the existence of files via an HTTP request with a full pathname, which produces different messages whether the file exists or not.
https://exchange.xforce.ibmcloud.com/vulnerabilities/19654
https://euvd.enisa.europa.eu/vulnerability/EUVD-2005-0734
http://secway.org/advisory/ad20050104.txt
http://secunia.com/advisories/14553
http://archives.neohapsis.com/archives/fulldisclosure/2005-03/0216.html