Microsoft releases Vulnerability-related.PatchVulnerability Intel 's microcode updates , including one to address Vulnerability-related.PatchVulnerability the recently revealed Foreshadow flaw . Microsoft has released Vulnerability-related.PatchVulnerability a set of new microcode patches from Intel that address Vulnerability-related.PatchVulnerability Spectre vulnerabilities , as well as the recently disclosed Foreshadow attacks . The updates are available Vulnerability-related.PatchVulnerability 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 Vulnerability-related.DiscoverVulnerability L1TF or 'L1 Terminal Fault ' . As Microsoft recently highlighted Vulnerability-related.DiscoverVulnerability , Windows machines with affected Intel CPUs will need microcode as well as software patches to mitigate Vulnerability-related.PatchVulnerability the Foreshadow attacks . Microsoft began helping Intel deliver Vulnerability-related.PatchVulnerability its microcode updates after Intel first started addressing Vulnerability-related.PatchVulnerability the Meltdown and Spectre CPU flaws in January . The microcode updates help mitigate Vulnerability-related.PatchVulnerability Spectre Variant 2 , CVE-2017-5715 . Foreshadow includes CVE-2018-3615 , which affects Vulnerability-related.DiscoverVulnerability Intel 's Software Guard Extensions ( SGX ) enclaves , while CVE-2018-3620 affects Vulnerability-related.DiscoverVulnerability operating systems and System Management Mode ( SMM ) memory . CVE-2018-3646 impacts Vulnerability-related.DiscoverVulnerability virtualization . Microsoft made Vulnerability-related.PatchVulnerability the updates , all dated 8/20/2018 , available Vulnerability-related.PatchVulnerability on the Microsoft Update Catalog this week .