The release fixes multiple security issues: A weakness in the DES implementation of crypt and a heap overflow issue in the phar extension
PHP 5.4.4 and PHP 5.3.14 fixes over 30 bugs. Please note that the use of php://fd streams is now restricted to the CLI SAPI
For source downloads of PHP 5.4.4 and PHP 5.3.14 please visit our downloads page, Windows binaries can be found on windows.php.net/download/. The list of changes are recorded in the ChangeLog.