Intel has disabled DirectX 12 support on its 4th generation Haswell processors with onboard graphics due to a security vulnerability. The vulnerability may allow escalation of privilege, or in other words, allow an unauthorized user to perform unwanted actions.
It would seem to be a rather drastic action to disable DirectX 12 support completely, rather than issue an updated driver or patch, so it will be interesting to see if Intel makes further comment on the specifics of the vulnerability,
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