This release contains fixes for security vulnerabilities. For more information, see Oracle Security Alert for CVE-2013-0422.
In addition, the following change has been made:
Synopsis: Default Security Level Setting Changed to High
The default security level for Java applets and web start applications has been increased from "Medium" to "High". This affects the conditions under which unsigned (sandboxed) Java web applications can run. Previously, as long as you had the latest secure Java release installed applets and web start applications would continue to run as always. With the "High" setting the user is always warned before any unsigned application is run to prevent silent exploitation.