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Fencer Vulns
high 7.8

CVE-2022-26929 json

.NET Framework Remote Code Execution Vulnerability

published 2022-09-13 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-31474

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.6%
EPSS 1.6% chance of exploitation in 30 days, percentile 75%
public exploits
0
none known

Summary

.NET Framework Remote Code Execution Vulnerability

Patch / fix

  • Microsoft Microsoft .NET Framework 3.5 AND 4.8.1 3.5.09082.05
  • Microsoft Microsoft .NET Framework 4.8.1 4.8.04556.03
  • Microsoft Microsoft .NET Framework 3.5 AND 4.6/4.6.2 10.0.10240.19444

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-2022-26929 updated cvss 7.8

dotnet: .NET Framework Remote Code Execution Vulnerability.

  • Red Hat .NET 6.0 on Red Hat Enterprise Linux rh-dotnet60, rh-dotnet60-build, rh-dotnet60-runtime Red Hat .NET Core 3.1 on Red Hat Enterprise Linux rh-dotnet31, rh-dotnet31-runtime Red Hat Enterprise Linux 8 dotnet, dotnet3.1, dotnet6.0, dotnet7.0, dotnet-host, dotnet-sdk-3.1, +27 more Red Hat Enterprise Linux 9 dotnet6.0, dotnet7.0, dotnet-host, dotnet-sdk-6.0, dotnet-sdk-7.0, dotnet-hostfxr-6.0, +16 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

Exploit prediction

1.57% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

  • Microsoft Microsoft .NET Framework 3.5 AND 4.8.1
  • Microsoft Microsoft .NET Framework 4.8.1
  • Microsoft Microsoft .NET Framework 3.5 AND 4.6/4.6.2

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.