Apple Security Updates for OS X Mountain Lion and Safari

APPLE-SA-2013-09-12-1 OS X Mountain Lion v10.8.5 and Security Update
2013-004

OS X Mountain Lion v10.8.5 and Security Update 2013-004 is now available, and it’s recommended to update as soon as possible!
This update solves multiple critical security issues such as cross-site scripting, Denial of Service and Arbitrary code execution for multiple applications.

More information: http://support.apple.com/kb/HT1222