Your machine is too old and QuickTime Player has left the building. How to update to the latest version of QuickTime on Mac From time to time Apple releases newer versions of QuickTime.
For the protection of our customers, Apple does not disclose, discuss, or confirm security issues until a full investigation has occurred and any necessary patches or releases are available.
About the security content of QuickTime 7.7.9 This document describes the security content of QuickTime 7.7.9.
