Apple has published the Security Update 2009-001, available for Leopard, Leopard Server, Tiger for Intel Macs, Tiger for PowerPC-based Macs, Tiger Server for PowerPC-based Macs and Server Universal. Two Java updates are also available which addresses security and compatibility issues and are compatible with both Intel and PowerPC-based Macs & applies to Mac OS X 10.5.6 or later versions.

The updates can be downloaded and installed via Software Update preferences, or Apple Downloads.