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Fencer Vulns
high 8.8

CVE-2026-62872 json

.NET Framework Elevation of Privilege Vulnerability

published 2026-08-11 2 mo ago modified 2026-10-30 9 d ago also EUVD-2026-56680

cvss
8.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 56%
public exploits
0
none known

Summary

Incorrect authorization in .NET Framework allows an authorized attacker to elevate privileges over a network.

Patch / fix

  • Microsoft Microsoft .NET Framework 3.5 2.0.50727.9183 & 3.0.30729.9169
  • Microsoft Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 2.0.50727.8984 & 3.0.30729.8980 & 4.7.4144.0
  • Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 2.0.50727.9070 & 3.0.30729.9068 & 4.7.4144.0
  • Microsoft Microsoft .NET Framework 3.5 AND 4.8 2.0.50727.9070 & 3.0.30729.9068 & 4.8.4805.0
  • Microsoft Microsoft .NET Framework 3.5 AND 4.8.1 2.0.50727.9183 & 3.0.30729.9169 & 4.8.9343.0
  • Microsoft Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 4.7.4144.0
  • Microsoft Microsoft .NET Framework 4.8 4.8.4805.0
  • Microsoft Microsoft .NET Framework 4.8.1 4.8.9344.0

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-2026-62872 updated cvss 8.8

dotnet: .NET Framework: Elevation of Privilege via incorrect authorization

  • Red Hat Enterprise Linux 8 dotnet, dotnet8.0, dotnet9.0, dotnet/sdk, dotnet10.0, dotnet-host, +39 more Red Hat Enterprise Linux 9 dotnet6.0, dotnet7.0, dotnet8.0, dotnet9.0, dotnet/sdk, dotnet10.0, +59 more Red Hat Enterprise Linux 10 dotnet8.0, dotnet9.0, dotnet10.0, dotnet11.0 Red Hat Hardened Images dotnet8.0, dotnet9.0, dotnet10.0 Red Hat OpenShift Dev Spaces devspaces/udi-rhel9
    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
total
Assessed
3 mo ago

Exploit prediction

0.78% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CNA 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

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

Classification

Weakness

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.