Apple Releases Apple TV Update with Security Fixes
Just as Apple has released iOS 4.2, the company has also issued an update to the Apple TV software, which includes a number of security fixes. Apple TV 4.1 software fixes 8 vulnerabilities in FreeType and libpng. This update is available from the Apple TV itself. More information is available here.
http://blog.intego.com/2010/11/22/apple-releases-apple-tv-update-with-security-fixes/