Microsoft has released a set of new microcode patches from Intel that address Spectre vulnerabilities, as well as the recently disclosed Foreshadow attacks.

The updates are available for all supported versions of Windows 10 and Windows Server.

As noted on the support page for Windows 10 version 1803, the microcode updates include mitigations for Spectre Variant 3a, CVE-2018-3640, Spectre Variant 4, CVE-2018-3639, as well as two of the Foreshadow bugs, CVE-2018-3615 and CVE-2018-3646, which are also known as L1TF or ‘L1 Terminal Fault’.

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