Apple has released a security updates for OS X Server, iOS, Safari, and Yosemite 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) iOS 8.4.1 for iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later
(b) Safari 8.0.8 for OS X Yosemite v10.10.4
(c) Safari 7.1.8 for OS X Mavericks v10.9.5
(d) Safari 6.2.8 for OS X Mountain Lion v10.8.5
(e) OS X Server v4.1.5 for OS X Yosemite v10.10.5 or later
(f) OS X Yosemite v10.10.5 and Security Update 2015-006 for OS X Mountain Lion v10.8.5, OS X Mavericks v10.9.5, OS X Yosemite v10.10 to v10.10.4.
Users and administrators are encouraged to review the Apple security update and apply the necessary updates.
For more information click Apple Security Updates for OS X Server, iOS Safari Yosemite