When Oracle released an out-of-band security update for Java SE, additional updates that had been planned were not included. As a result, this critical security update was released to add the additional five fixes omitted earlier this month.
If you still have Java installed, be sure to set the security to high and keep Java disabled until needed. See Java, The Never-Ending Saga (http://securitygarden.blogspot.com/p/blog-page_18.html) for illustrated instructions.
Download link: Java Version 7 Update 15 (http://java.com/en/download/index.jsp)
Verify your version: http://www.java.com/en/download/testjava.jsp (http://www.java.com/en/download/testjava.jsp)
Note: UNcheck any pre-checked toolbar and/or software options presented with the update. They are not part of the software update and are completely optional.