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Fencer Vulns
high 7.5

CVE-2024-21312 json

.NET Framework Denial of Service Vulnerability

published 2024-01-09 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-19025

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 4.8.1 4.8.09214.01
  • Microsoft Microsoft .NET Framework 4.8 4.8.04690.02
  • Microsoft Microsoft .NET Framework 3.5 AND 4.8 4.8.04690.02
  • Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 4.7.04081.03
  • Microsoft Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 4.7.04081.02
  • Microsoft Microsoft .NET Framework 3.5 3.0.50727.8976

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-2024-21312 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 Enterprise Linux 8 dotnet, dotnet6.0, dotnet7.0, dotnet8.0, dotnet-host, dotnet-sdk-6.0, +30 more Red Hat Enterprise Linux 9 dotnet6.0, dotnet7.0, dotnet8.0, dotnet-host, dotnet-sdk-6.0, dotnet-sdk-7.0, +29 more
    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

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

3.58% 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:P/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

Affected products

  • Microsoft Microsoft .NET Framework 3.5 AND 4.8.1
  • Microsoft Microsoft .NET Framework 4.8
  • Microsoft Microsoft .NET Framework 3.5 AND 4.8
  • Microsoft Microsoft .NET Framework 3.5 AND 4.7.2
  • Microsoft Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2
  • Microsoft Microsoft .NET Framework 3.5

Classification

Weakness
  • CWE-20 Improper Input Validation

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.