The Critical Patch Update for April 2013 and The Oracle Java SE Critical Patch Update for April 2013 were released on April 16th, 2013. Oracle strongly recommends applying the patches as soon as possible. Please note that Sun products are included in this Critical Patch Update.
And you can download it for free from the below :
Oracle Technology Network Press Here
Oracle Techonolgy Network Page to Download CPU patch here
Oracle Jave SE Patch Press Here