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CVE record · CVE-2022-21911

.NET Framework Denial of Service Vulnerability

CVSS 7.5 HighEPSS 0.032 · 88th percentile

Published by the CVE Program (CNA: microsoft) at 11 Jan 2022, 20:23 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 Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2
  • affected 4.0.0.0 to before 4.7.3905.0 custom
Microsoft Microsoft .NET Framework 3.5 AND 4.8
  • affected 4.8.0 to before 4.8.4465.0 custom
Microsoft Microsoft .NET Framework 4.8
  • affected 4.8.0 to before 4.8.4465.0 custom
Microsoft Microsoft .NET Framework 3.5 AND 4.7.2
  • affected 4.7.0 to before 4.7.3905.0 custom
Microsoft Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2
  • affected 3.0.0.0 to before 10.0.14393.4886 custom
Microsoft Microsoft .NET Framework 2.0 Service Pack 2
  • affected 2.0.0 to before 2.0.50727.8955 custom
Microsoft Microsoft .NET Framework 4.6
  • affected 4.0.0.0 to before 4.7.3905.0 custom
Microsoft Microsoft .NET Framework 3.5
  • affected 3.5.0 to before 2.0.50727.8955 custom
Microsoft Microsoft .NET Framework 3.5.1
  • affected 3.5.0 to before 2.0.50727.8955 custom
Microsoft Microsoft .NET Framework 4.5.2
  • affected 4.0.0.0 to before 4.0.30319.36720 custom
Identifiers
CVE-2022-21911
CNA
microsoft
Tags
Published
11 Jan 2022
Updated
2 Jan 2025

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
7.5 High 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C CNA (microsoft)
  • CISA KEV Not listed.
  • EPSS 0.032, the 88th 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 11 Jan 2022. 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.