Apple has updated the Leopard (Mac OS X 10.5) and Windows (XP SP2 and later) versions of QuickTime to version 7.7. This update addresses 13 security issues.
The update is not available to Macs running OS X 10.6 or later, as the security fixes in this update have already been addressed in OS X 10.6.7, 10.6.8 and later releases. Apple recommends the update for all QuickTime users on Windows or Mac OS X Leopard 10.5.8.
QuickTime 7.7 for Leopard is available here (68.85MB) and QuickTime 7.7 for Windows is available here (37.15MB).
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