Winamp 5.07 and possibly other versions, allows remote attackers to cause a denial of service (application crash or CPU consumption) via (1) an mp4 or m4a playlist file that contains invalid tag data or (2) an invalid .nsv or .nsa file.
https://exchange.xforce.ibmcloud.com/vulnerabilities/18467
https://exchange.xforce.ibmcloud.com/vulnerabilities/18466
http://www.securityfocus.com/bid/11909
http://www.kb.cert.org/vuls/id/372968
http://securitytracker.com/alerts/2004/Dec/1012525.html