Apple released a new Critical security update for iOS 11.2.1 and Apple products such as tvOS, watchOS, macOS.

This Apple security update for remote attack flaw that leads to an attacker may be able to unexpectedly alter application state.

Improper input validation was the root cause of this vulnerability and Message handling issue was addressed with improved input validation.

This update available for iPhone 5s and later, iPad Air and later, and iPod touch 6th generation.

Apple tvOS 11.2.1

Security patch also released for Apple TV 4K and Apple TV (4th generation) and the same vulnerability has been discovered for this Apple TV based.

Security Researcher Tian Zhang has been reported this vulnerability to Apple and CVE-2017-139;03 has been assigned.

Also Read:  Microsoft Released New Security Patch Updates for More than 30 Critical Security Issues

Apple  iCloud for Windows 7.2

A vulnerability that discovered in APNs Server Leads to an attacker in a privileged network position can track a user which has been identified in the use of client certificates with help of revised protocol.

A team(FURIOUSMAC ) from  United States Naval Academy has reported this vulnerability to apple and CVE-2017-13864 has been Assigned.

Also, another critical vulnerability Discovered that performs maliciously crafted web content may lead to arbitrary code execution.

This vulnerability has been patched and adds into common vulnerability database.

  • CVE-2017-7156: an anonymous researcher
  • CVE-2017-7157: an anonymous researcher
  • CVE-2017-13856: Jeonghoon Shin
  • CVE-2017-13870: an anonymous researcher
  • CVE-2017-13866: an anonymous researcher
Name and information link Available for Release date
iCloud for Windows 7.2 Windows 7 and later 13 Dec 2017
tvOS 11.2.1 Apple TV 4K and Apple TV (4th generation) 13 Dec 2017
iOS 11.2.1 iPhone 5s and later, iPad Air and later, and iPod touch 6th generation 13 Dec 2017


Keeping your software up to date is one of the most important things you can do to maintain your Apple product’s security. Apple said.

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