Apple has released a security updates for OS X, iOS, Safari and Apple TV to address multiple vulnerabilities. Exploitation of one of these vulnerabilities may allow an attacker to take control of an affected system.
The following updates are available:
(a) OS X Yosemite v10.10.3 and Security Update 2015-004 for OS X Mountain Lion v10.8.5, OS X Mavericks v10.9.5, and OS X Yosemite v10.10 to v10.10.2
(b) iOS 8.3 for iPhones 4s and later, iPod touch 5th generation and later, and iPad 2 and later
(c) Safari 8.0.5, Safari 7.1.5, and Safari 6.2.5 for OS X Mountain Lion v10.8.5, OS X Mavericks v10.9.5, and OS X Yosemite v10.10.2
(d) Apple TV 7.2 for Apple TV 3rd generation and later
Users and administrators are encouraged to review the Apple security update and apply the necessary updates.