About Leopard Security Update 2012-003
This update disables versions of Adobe Flash Player that do not include the latest security updates and provides the option to get the current version from Adobe's website.

For more information, please visit: http://support.apple.com/kb/HT5271

Original source: https://support.apple.com/kb/DL1533

VIA http://www.helpmyos.com/t2720-apple-releases-update-for-leopard-fixing-flashback-issues