Apple has released a security updates for OS X Server, iTunes, Xcode, and iOS 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 Server v5.0.3 for OS X Yosemite v10.10.4 or later
(b) iTunes 12.3 for Windows 7 and later
(c) Xcode 7.0 for OS X Yosemite v10.10.4 or later
(d) iOS 9 for iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later
Users and administrators are encouraged to review the Apple security update and apply the necessary updates.