To ensure that you can take advantage of these valuable updates faster, use released patches for Magento Enterprise Edition 1.11.0.0 and later releases and for Magento Community Edition 1.6.0.0 and later releases. Support for PHP 5.4 will also be built in to future Magento product releases.

The Magento Enterprise Edition patches are posted in the Support Patches section of My Account and the Magento Community Edition patches are available on the Community Edition download page. More information on applying patches is available in the Magento Knowledge Base. If you are unable to upgrade to PHP 5.4, PHP suggests you upgrade to 5.3.28 as the latest version in the 5.3.x product line that includes security fixes.