The remote Windows application is affected by several overflow vulnerabilities.
The installed version of RealPlayer on the remote host is prone to buffer overflow vulnerabilities. An attacker may be able to leverage these issues to execute arbitrary code on the remote host subject to the permissions of the user running the affected application. Note that a user doesn't necessarily need to explicitly access a malicious media file since the browser may automatically pass the file to the RealPlayer application.
Upgrade or patch according to vendor recommendations.