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Fencer Intel
high 7.5

CVE-2026-114155 json

.NET Elevation of Privilege Vulnerability

published yesterday modified 17h ago also EUVD-2026-121978 , GHSA-q7j6-px74-p2vw

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 19%
public exploits
0
none known

Summary

Time-of-check time-of-use (toctou) race condition in .NET allows an authorized attacker to elevate privileges locally.

Patch / fix

  • nuget Microsoft.DotNet.HotReload.Watch.Aspire 10.0.404, 11.0.100
  • Microsoft .NET 10.0 installed on Linux 10.0.404
  • Microsoft .NET 10.0 installed on Mac OS 10.0.404
  • Microsoft .NET 11.0 installed on Linux 11.0.100
  • Microsoft .NET 11.0 installed on Mac OS 11.0.100
  • Microsoft Microsoft.DotNet.HotReload.Watch.Aspire 11.0.100

Is CVE-2026-114155 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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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-2026-114155 updated cvss 7.5

dotnet10.0: dotnet11.0: .NET Elevation of Privilege Vulnerability

  • Red Hat Enterprise Linux 8 dotnet, dotnet10.0, dotnet11.0, dotnet-host, dotnet-sdk-10.0, dotnet-sdk-11.0, +24 more Red Hat Enterprise Linux 9 dotnet10.0, dotnet-host, dotnet-sdk-10.0, dotnet-sdk-11.0, dotnet-hostfxr-10.0, dotnet-hostfxr-11.0, +22 more Red Hat Enterprise Linux 10 dotnet10.0, dotnet11.0
    affected: no fix available
  • Red Hat Hardened Images dotnet10.0
    not affected: component 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
yesterday

Exploit prediction

0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
GitHub 3.1 7.5 CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
CNA 3.1 7.5 CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
nuget Microsoft.DotNet.HotReload.Watch.Aspire
>=10.0.300, <10.0.404
>=10.0.400, <10.0.404
>=11.0.100-preview.3.26207.106, <11.0.100
10.0.404
11.0.100

Affected products

  • Microsoft .NET 10.0 installed on Linux
  • Microsoft .NET 10.0 installed on Mac OS
  • Microsoft .NET 11.0 installed on Linux
  • Microsoft .NET 11.0 installed on Mac OS
  • Microsoft Microsoft.DotNet.HotReload.Watch.Aspire

Classification

Weakness
  • CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition

References

Sources

Fencer Intel 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.