Apple has released security updates for OS X Server, iTunes, Xcode, and iOS to address multiple vulnerabilities. Exploitation of some of these vulnerabilities may allow a remote attacker to take control of an affected system. Available updates include:
* OS X Server v5.0.3 for OS X Yosemite v10.10.4 or later
* iTunes 12.3 for Windows 7 and later
* Xcode 7.0 for OS X Yosemite v10.10.4 or later
* iOS 9 for iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later
https://support.apple.com/en-us/HT205219
https://support.apple.com/en-us/HT205212
https://support.apple.com/en-us/HT201222
Firmware Security 