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Fencer Vulns
high 7.5

CVE-2022-26832 json

.NET Framework Denial of Service Vulnerability

published 2022-04-15 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-31382

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
3.6%
EPSS 3.6% chance of exploitation in 30 days, percentile 89%
public exploits
0
none known

Summary

.NET Framework Denial of Service Vulnerability

Patch / fix

  • Microsoft Microsoft .NET Framework 3.5 AND 4.8 4.8.4494.03
  • Microsoft Microsoft .NET Framework 4.5.2 4.0.52732.36732
  • Microsoft Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 4.7.03930.02
  • Microsoft Microsoft .NET Framework 4.8 4.8.04494.03
  • Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 4.7.3930.02
  • Microsoft Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 10.0.14393.5066
  • Microsoft Microsoft .NET Framework 4.6 4.0.52732.36732
  • Microsoft Microsoft .NET Framework 2.0 Service Pack 2 2.0.50727.8962
  • Microsoft Microsoft .NET Framework 3.0 Service Pack 2 2.0.50727.8962
  • Microsoft Microsoft .NET Framework 3.5.1 6.1.50727.8962

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-26832 updated cvss 7.5

dotnet: Denial of service vulnerability

  • Red Hat .NET 6.0 on Red Hat Enterprise Linux rh-dotnet60-dotnet, rh-dotnet60-dotnet-host, rh-dotnet60-dotnet-sdk-6.0, rh-dotnet60-dotnet-hostfxr-6.0, rh-dotnet60-dotnet-runtime-6.0, rh-dotnet60-dotnet-templates-6.0, +6 more Red Hat .NET Core 3.1 on Red Hat Enterprise Linux rh-dotnet31-dotnet, rh-dotnet31-dotnet-host, rh-dotnet31-dotnet-sdk-3.1, rh-dotnet31-dotnet-hostfxr-3.1, rh-dotnet31-dotnet-runtime-3.1, rh-dotnet31-dotnet-templates-3.1, +6 more Red Hat .NET Core 5.0 on Red Hat Enterprise Linux rh-dotnet50-dotnet, rh-dotnet50-dotnet-host, rh-dotnet50-dotnet-sdk-5.0, rh-dotnet50-dotnet-hostfxr-5.0, rh-dotnet50-dotnet-runtime-5.0, rh-dotnet50-dotnet-templates-5.0, +6 more Red Hat Enterprise Linux 8 dotnet, dotnet3.1, dotnet5.0, dotnet6.0, dotnet-host, dotnet-sdk-3.1, +27 more Red Hat Enterprise Linux 9 dotnet3.1
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

3.61% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 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 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

  • Microsoft Microsoft .NET Framework 3.5 AND 4.8
  • Microsoft Microsoft .NET Framework 4.5.2
  • Microsoft Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2
  • Microsoft Microsoft .NET Framework 4.8
  • Microsoft Microsoft .NET Framework 3.5 AND 4.7.2
  • Microsoft Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2
  • Microsoft Microsoft .NET Framework 4.6
  • Microsoft Microsoft .NET Framework 2.0 Service Pack 2
  • Microsoft Microsoft .NET Framework 3.0 Service Pack 2
  • Microsoft Microsoft .NET Framework 3.5
  • Microsoft Microsoft .NET Framework 3.5.1

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.