Apple has released security updates for OS X, Safari, iOS and Apple TV to address multiple vulnerabilities, one of which could allow a remote attacker to take control of an affected system.
Updates available include:
OS X v10.10.2 and Security Update 2015-001 for OS X Mountain Lion v10.8.5, OS X Mavericks v10.9.5, and OS X Yosemite v10.10 and v10.10.1
Safari 8.0.3, Safari 7.1.3, and Safari 6.2.3 for OS X Mountain Lion v10.8.5, OS X Mavericks v10.9.5, and OS X Yosemite v10.10.1
iOS 8.1.3 for iPhone 4s and later, iPod touch 5th generation and later, and iPad 2 and later
Apple TV 7.0.3 for Apple TV 3rd generation and later
US-CERT encourages users and administrators to review Apple security updates HT204244(link is external), HT204243(link is external), HT204245(link is external) and HT204246(link is external), and apply the necessary updates.