CVE-2020-16891CriticalMicrosoft CVSS 8.8CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C

Microsoft security update for CVE-2020-16891 — Windows

Published
October 13, 2020
Last Modified
—

🔗 CVE IDs covered (1)

CVE-2020-16891 →

📋 Microsoft's advisory

EchelonGraph does not copy Microsoft's advisory page: its FAQ and remediation text are not shown here. Read the advisory on https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-16891. This page also shows what EchelonGraph holds for CVE-2020-16891, with the description from its CVE record, which the CVE Numbering Authority that assigned the CVE wrote: for a CVE Microsoft assigned, often in the words of Microsoft's own advisory.

🎯 Affected products25

  • Windows 10 Version 1607 for x64-based Systems
  • Windows 10 Version 1709 for x64-based Systems
  • Windows 10 Version 1803 for x64-based Systems
  • Windows 10 Version 1809 for x64-based Systems
  • Windows 10 Version 1903 for x64-based Systems
  • Windows 10 Version 1909 for x64-based Systems
  • Windows 10 Version 2004 for x64-based Systems
  • Windows 10 for x64-based Systems
  • Windows 7 for x64-based Systems Service Pack 1
  • Windows 8.1 for x64-based systems
  • Windows Server 2008 R2 for x64-based Systems Service Pack 1
  • Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
  • Windows Server 2008 for x64-based Systems Service Pack 2
  • Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
  • Windows Server 2012
  • Windows Server 2012 (Server Core installation)
  • Windows Server 2012 R2
  • Windows Server 2012 R2 (Server Core installation)
  • Windows Server 2016
  • Windows Server 2016 (Server Core installation)
  • Windows Server 2019
  • Windows Server 2019 (Server Core installation)
  • Windows Server, version 1903 (Server Core installation)
  • Windows Server, version 1909 (Server Core installation)
  • Windows Server, version 2004 (Server Core installation)

✅ Updates Microsoft lists: 15 KB articles

15 rows: one per KB article or update, update type and fixed build. Their details are on Microsoft's advisory.

KB articleUpdateFixed build
KB4579311Security Update—
KB4580330Security Update—
KB4577668Security Update—
KB4577671Security Update—
KB4580328Security Update—
KB4580327Security Update—
KB4580346Security Update—
KB4580345Monthly Rollup—
KB4580387Security Only—
KB4580347Monthly Rollup—
KB4580358Security Only—
KB4580378Monthly Rollup—
KB4580385Security Only—
KB4580382Monthly Rollup—
KB4580353Security Only—

🧭 EchelonGraph on CVE-2020-16891

EchelonGraph score
8.8 HIGH
CISA KEV
Not listed
Fix status
A fix is available — apply it.

Description from the CVE record (CVE.org), as published by its numbering authority

<p>A remote code execution vulnerability exists when Windows Hyper-V on a host server fails to properly validate input from an authenticated user on a guest operating system. To exploit the vulnerability, an attacker could run a specially crafted application on a guest operating system that could cause the Hyper-V host operating system to execute arbitrary code.</p> <p>An attacker who successfully exploited the vulnerability could execute arbitrary code on the host operating system.</p> <p>The security update addresses the vulnerability by correcting how Hyper-V validates guest operating system user input.</p>

Published by Microsoft Corporation, the CVE Numbering Authority that assigned CVE-2020-16891, in its CVE record at CVE.org; reused under the CVE Program's Terms of Use (its licence and MITRE's copyright notice are in our Terms of Service).

🔗 References (31)