Intel has started to issue security updated to fix multiple flaws in Intels CPUs, unfortunately many of them will not be available to the end-users until 2018. An attacker can exploit the vulnerabilities to remotely access the vulnerable machine and perform in a stealth way malicious activities, including to deliver a malware. The time necessary to release the fixes is not surprising, patch management is a complex and time consuming activity, especially when the updates must be distributed to a large number of machines. Other PC makers have not published advice related to the Intel flaws and the availability of security patches.”]
Source: http://securityaffairs.co/wordpress/65910/hacking/intel-management-engine-fixes.html