Connect your agent
AdvisoriesCriticalCheck your lockfilePluginHow it worksPricing Connect your agent

CVE record · CVE-2021-1691

Windows Hyper-V Denial of Service Vulnerability

CVSS 7.7 HighEPSS 0.041 · 90th percentile

Published by the CVE Program (CNA: microsoft) at 12 Jan 2021, 19:42 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
VendorProductVersions
Microsoft Windows Server version 20H2
  • affected 10.0.0 to before publication custom
Microsoft Windows 10 Version 1909
  • affected 10.0.0 to before publication custom
Microsoft Windows Server, version 1909 (Server Core installation)
  • affected 10.0.0 to before publication custom
Microsoft Windows 10 Version 2004
  • affected 10.0.0 to before publication custom
Microsoft Windows Server version 2004
  • affected 10.0.0 to before publication custom
Identifiers
CVE-2021-1691
CNA
microsoft
Tags
Published
12 Jan 2021
Updated
19 Nov 2024

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.7 High 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C CNA (microsoft)
  • CISA KEV Not listed.
  • EPSS 0.041, the 90th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 12 Jan 2021. New records show when each source confirmed them.

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.