Intel's fourth-generation Core processors, codenamed Haswell, are subject to new security exploits. According to the company, a vulnerability exists inside the graphics controller of 4th generation Haswell processors, happening once the DirectX 12 API loading occurs. To fix the problem, Intel has found that disabling this API results in a fix. Starting with Intel graphics driver 15.40.44.5107 applications that run exclusively on DirectX 12 API no longer work with the following Intel Graphics Controllers: Intel Iris Pro Graphics 5200/5100, HD Graphics 5000/4600/4400/4200, and Intel Pentium and Celeron Processors with Intel HD Graphics based on 4th Generation Intel Core.

"A potential security vulnerability in Intel Graphics may allow escalation of privilege on 4th Generation Intel Core processors. Intel has released a software update to mitigate this potential vulnerability. In order to mitigate the vulnerability, DirectX 12 capabilities were deprecated." says the Intel page. If a user with a Haswell processor has a specific need to run the DirectX 12 application, they can downgrade their graphics driver to version 15.40.42.5063 or older.