RealOne player allows remote attackers to execute arbitrary script in the "My Computer" zone via a SMIL presentation with a URL that references a scripting protocol, which is executed in the security context of the previously loaded URL, as demonstrated using a "javascript:" URL in the area tag.
https://exchange.xforce.ibmcloud.com/vulnerabilities/13028
http://www.service.real.com/help/faq/security/securityupdate_august2003.html