Summary:
Intel Processor(CPU) microcode update for Windows 10 Version 20H2 addressing multiple security vulnerabilities
Comments:
- Windows 10 Version 20H2 Microcode Update were released on September 1 2020(KB4558130)
- For specific details – see KB article – KB4589212
- This Intel Microcode update for Windows 10 Version 20H2 address 7 security vulnerabilities
- CVE-2018-12126 Microarchitectural Store Buffer Data Sampling (MSBDS)
- CVE-2018-12127 Microarchitectural Load Port Data Sampling (MLPDS)
- CVE-2018-12130 Microarchitectural Fill Buffer Data Sampling (MFBDS)
- CVE-2019-11091 Microarchitectural Data Sampling Uncacheable Memory (MDSUM)
- CVE-2020-8695 Intel® Running Average Power Limit (RAPL) Interface
- CVE-2020-8696 Vector Register Sampling active
- CVE-2020-8698 Fast store forward predictor
- Windows 10 Version 20H2 Intel microcode updates with few exceptions are normally stand-alone updates and currently only available in the Microsoft Catalog.
- A few Intel processors on devices running Windows 10 20H2(and 2004) will receive these updates via Windows Update.
- To determine if the microcode update will be available in Windows Update for your CPU see the KB article and reference Footnote #2. CPU’s capable of updating microcode via Windows Update are shown in the KB article with a superscripted ‘2’ in the CPU code name field(first column) in the KB table of CPU’s
- A few Intel processors on devices running Windows 10 20H2(and 2004) will receive these updates via Windows Update.
- This Microcode update includes previous released microcode updates for applicable CPU’s
- Applicable to Windows 10 20H2 and for the specific Intel CPU’s shown in the Knowledge Base article
How to Obtain:
- Microsoft Catalog
- http://www.catalog.update.microsoft.com/Search.aspx?q=KB4589212
- Note: This update is available for Windows 10 Version 20H2 different architectures (x64, x86, and Server 2004). If downloading, ensure the correct Win10 20H2 file is chosen.
Additional information:
- Microsoft KB article _ KB4589212
- Windows 10 Forums Article KB4589212 Intel Microcode Updates Windows 10 2004 and 20H2 Nov. 10
- EdTittle.com Intel Microcode Update Blog Article
- Windows 10 Bleeping Computer Article (Editor Note: In-depth Technical Article; Includes a link for CPU identification software)
Revisions:
Nov 10 2020: Initial Draft
Nov 11 2020: Original Publish Date
Nov 14 2020: Added 3 more links in Additional Information Section
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