---
id: CVE-2026-96231
title: >-
  Improper link resolution before file access ('link following') in .NET allows
  an authorized attacker to elevate privileges locally.
summary: >-
  Improper link resolution before file access ('link following') in .NET allows
  an authorized attacker to elevate privileges locally.
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-59
vendor: Microsoft
product: Microsoft.NETCore.App.Runtime.linux-arm
affected:
  - 'Microsoft.NETCore.App.Runtime.linux-arm >= 8.0.0, <= 8.0.31'
  - 'Microsoft.NETCore.App.Runtime.linux-arm64 >= 8.0.0, <= 8.0.31'
  - 'Microsoft.NETCore.App.Runtime.linux-musl-arm >= 8.0.0, <= 8.0.31'
  - 'Microsoft.NETCore.App.Runtime.linux-musl-arm64 >= 8.0.0, <= 8.0.31'
  - 'Microsoft.NETCore.App.Runtime.linux-musl-x64 >= 8.0.0, <= 8.0.31'
  - 'Microsoft.NETCore.App.Runtime.linux-x64 >= 8.0.0, <= 8.0.31'
  - 'Microsoft.NETCore.App.Runtime.osx-arm64 >= 8.0.0, <= 8.0.31'
  - 'Microsoft.NETCore.App.Runtime.osx-x64 >= 8.0.0, <= 8.0.31'
  - 'Microsoft.NETCore.App.Runtime.linux-arm >= 10.0.0, <= 10.0.12'
  - 'Microsoft.NETCore.App.Runtime.linux-arm64 >= 10.0.0, <= 10.0.12'
  - 'Microsoft.NETCore.App.Runtime.linux-musl-arm >= 10.0.0, <= 10.0.12'
  - 'Microsoft.NETCore.App.Runtime.linux-musl-arm64 >= 10.0.0, <= 10.0.12'
  - 'Microsoft.NETCore.App.Runtime.linux-musl-x64 >= 10.0.0, <= 10.0.12'
  - 'Microsoft.NETCore.App.Runtime.linux-x64 >= 10.0.0, <= 10.0.12'
  - 'Microsoft.NETCore.App.Runtime.osx-arm64 >= 10.0.0, <= 10.0.12'
  - 'Microsoft.NETCore.App.Runtime.osx-x64 >= 10.0.0, <= 10.0.12'
  - 'Microsoft.NETCore.App.Runtime.linux-arm >= 9.0.0, <= 9.0.20'
  - 'Microsoft.NETCore.App.Runtime.linux-arm64 >= 9.0.0, <= 9.0.20'
  - 'Microsoft.NETCore.App.Runtime.linux-musl-arm >= 9.0.0, <= 9.0.20'
  - 'Microsoft.NETCore.App.Runtime.linux-musl-arm64 >= 9.0.0, <= 9.0.20'
  - 'Microsoft.NETCore.App.Runtime.linux-musl-x64 >= 9.0.0, <= 9.0.20'
  - 'Microsoft.NETCore.App.Runtime.linux-x64 >= 9.0.0, <= 9.0.20'
  - 'Microsoft.NETCore.App.Runtime.osx-arm64 >= 9.0.0, <= 9.0.20'
  - 'Microsoft.NETCore.App.Runtime.osx-x64 >= 9.0.0, <= 9.0.20'
  - 'Microsoft.NETCore.App.Runtime.linux-arm >= 11.0.0-preview.1, <= 11.0.0-rc.1'
  - >-
    Microsoft.NETCore.App.Runtime.linux-arm64 >= 11.0.0-preview.1, <=
    11.0.0-rc.1
  - >-
    Microsoft.NETCore.App.Runtime.linux-musl-arm >= 11.0.0-preview.1, <=
    11.0.0-rc.1
  - >-
    Microsoft.NETCore.App.Runtime.linux-musl-arm64 >= 11.0.0-preview.1, <=
    11.0.0-rc.1
  - >-
    Microsoft.NETCore.App.Runtime.linux-musl-x64 >= 11.0.0-preview.1, <=
    11.0.0-rc.1
  - 'Microsoft.NETCore.App.Runtime.linux-x64 >= 11.0.0-preview.1, <= 11.0.0-rc.1'
  - 'Microsoft.NETCore.App.Runtime.osx-arm64 >= 11.0.0-preview.1, <= 11.0.0-rc.1'
  - 'Microsoft.NETCore.App.Runtime.osx-x64 >= 11.0.0-preview.1, <= 11.0.0-rc.1'
patched:
  - Microsoft.NETCore.App.Runtime.linux-arm 8.0.32
  - Microsoft.NETCore.App.Runtime.linux-arm64 8.0.32
  - Microsoft.NETCore.App.Runtime.linux-musl-arm 8.0.32
  - Microsoft.NETCore.App.Runtime.linux-musl-arm64 8.0.32
  - Microsoft.NETCore.App.Runtime.linux-musl-x64 8.0.32
  - Microsoft.NETCore.App.Runtime.linux-x64 8.0.32
  - Microsoft.NETCore.App.Runtime.osx-arm64 8.0.32
  - Microsoft.NETCore.App.Runtime.osx-x64 8.0.32
  - Microsoft.NETCore.App.Runtime.linux-arm 10.0.13
  - Microsoft.NETCore.App.Runtime.linux-arm64 10.0.13
  - Microsoft.NETCore.App.Runtime.linux-musl-arm 10.0.13
  - Microsoft.NETCore.App.Runtime.linux-musl-arm64 10.0.13
  - Microsoft.NETCore.App.Runtime.linux-musl-x64 10.0.13
  - Microsoft.NETCore.App.Runtime.linux-x64 10.0.13
  - Microsoft.NETCore.App.Runtime.osx-arm64 10.0.13
  - Microsoft.NETCore.App.Runtime.osx-x64 10.0.13
  - Microsoft.NETCore.App.Runtime.linux-arm 9.0.21
  - Microsoft.NETCore.App.Runtime.linux-arm64 9.0.21
  - Microsoft.NETCore.App.Runtime.linux-musl-arm 9.0.21
  - Microsoft.NETCore.App.Runtime.linux-musl-arm64 9.0.21
  - Microsoft.NETCore.App.Runtime.linux-musl-x64 9.0.21
  - Microsoft.NETCore.App.Runtime.linux-x64 9.0.21
  - Microsoft.NETCore.App.Runtime.osx-arm64 9.0.21
  - Microsoft.NETCore.App.Runtime.osx-x64 9.0.21
  - Microsoft.NETCore.App.Runtime.linux-arm 11.0.0-rc.2
  - Microsoft.NETCore.App.Runtime.linux-arm64 11.0.0-rc.2
  - Microsoft.NETCore.App.Runtime.linux-musl-arm 11.0.0-rc.2
  - Microsoft.NETCore.App.Runtime.linux-musl-arm64 11.0.0-rc.2
  - Microsoft.NETCore.App.Runtime.linux-musl-x64 11.0.0-rc.2
  - Microsoft.NETCore.App.Runtime.linux-x64 11.0.0-rc.2
  - Microsoft.NETCore.App.Runtime.osx-arm64 11.0.0-rc.2
  - Microsoft.NETCore.App.Runtime.osx-x64 11.0.0-rc.2
published: '2026-10-13'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T04:18:58.287'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-96231'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96231'
    label: secure@microsoft.com
  - url: 'https://github.com/dotnet/runtime/security/advisories/GHSA-2j93-m82w-73j2'
  - url: 'https://github.com/dotnet/announcements/issues/479'
  - url: 'https://github.com/dotnet/runtime/issues/135707'
  - url: 'https://github.com/advisories/GHSA-2j93-m82w-73j2'
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-96231.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-96231'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2548805'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-96231'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-96231'
  - url: 'https://access.redhat.com/errata/RHSA-2026:86195'
  - url: 'https://access.redhat.com/errata/RHSA-2026:86168'
  - url: 'https://access.redhat.com/errata/RHSA-2026:86172'
  - url: 'https://access.redhat.com/errata/RHSA-2026:86192'
  - url: 'https://access.redhat.com/errata/RHSA-2026:86594'
  - url: 'https://access.redhat.com/errata/RHSA-2026:86170'
  - url: 'https://access.redhat.com/errata/RHSA-2026:86193'
  - url: 'https://access.redhat.com/errata/RHSA-2026:86169'
  - url: 'https://access.redhat.com/errata/RHSA-2026:86171'
  - url: 'https://access.redhat.com/errata/RHSA-2026:84491'
  - url: 'https://access.redhat.com/errata/RHSA-2026:84693'
  - url: 'https://access.redhat.com/errata/RHSA-2026:84424'
  - url: 'https://access.redhat.com/errata/RHSA-2026:88474'
  - url: 'https://access.redhat.com/errata/RHSA-2026:88424'
  - url: 'https://access.redhat.com/errata/RHSA-2026:88425'
  - url: 'https://access.redhat.com/errata/RHSA-2026:88422'
tags:
  - nvd
  - ghsa
  - nuget
  - cve.org
  - csaf
  - vex
  - red-hat
aliases:
  - GHSA-2j93-m82w-73j2
ecosystem: nuget
ingestedAt: '2026-10-13T19:43:29.253Z'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-08T00:00:00+00:00'
epss: 0.00411
epssPercentile: 0.35129
---

## Overview

Improper link resolution before file access ('link following') in .NET allows an authorized attacker to elevate privileges locally.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-96231)

Affected packages:

- `Microsoft.NETCore.App.Runtime.linux-arm >= 8.0.0, <= 8.0.31`
- `Microsoft.NETCore.App.Runtime.linux-arm64 >= 8.0.0, <= 8.0.31`
- `Microsoft.NETCore.App.Runtime.linux-musl-arm >= 8.0.0, <= 8.0.31`
- `Microsoft.NETCore.App.Runtime.linux-musl-arm64 >= 8.0.0, <= 8.0.31`
- `Microsoft.NETCore.App.Runtime.linux-musl-x64 >= 8.0.0, <= 8.0.31`
- `Microsoft.NETCore.App.Runtime.linux-x64 >= 8.0.0, <= 8.0.31`
- `Microsoft.NETCore.App.Runtime.osx-arm64 >= 8.0.0, <= 8.0.31`
- `Microsoft.NETCore.App.Runtime.osx-x64 >= 8.0.0, <= 8.0.31`
- `Microsoft.NETCore.App.Runtime.linux-arm >= 10.0.0, <= 10.0.12`
- `Microsoft.NETCore.App.Runtime.linux-arm64 >= 10.0.0, <= 10.0.12`
- `Microsoft.NETCore.App.Runtime.linux-musl-arm >= 10.0.0, <= 10.0.12`
- `Microsoft.NETCore.App.Runtime.linux-musl-arm64 >= 10.0.0, <= 10.0.12`
- `Microsoft.NETCore.App.Runtime.linux-musl-x64 >= 10.0.0, <= 10.0.12`
- `Microsoft.NETCore.App.Runtime.linux-x64 >= 10.0.0, <= 10.0.12`
- `Microsoft.NETCore.App.Runtime.osx-arm64 >= 10.0.0, <= 10.0.12`
- `Microsoft.NETCore.App.Runtime.osx-x64 >= 10.0.0, <= 10.0.12`
- `Microsoft.NETCore.App.Runtime.linux-arm >= 9.0.0, <= 9.0.20`
- `Microsoft.NETCore.App.Runtime.linux-arm64 >= 9.0.0, <= 9.0.20`
- `Microsoft.NETCore.App.Runtime.linux-musl-arm >= 9.0.0, <= 9.0.20`
- `Microsoft.NETCore.App.Runtime.linux-musl-arm64 >= 9.0.0, <= 9.0.20`
- `Microsoft.NETCore.App.Runtime.linux-musl-x64 >= 9.0.0, <= 9.0.20`
- `Microsoft.NETCore.App.Runtime.linux-x64 >= 9.0.0, <= 9.0.20`
- `Microsoft.NETCore.App.Runtime.osx-arm64 >= 9.0.0, <= 9.0.20`
- `Microsoft.NETCore.App.Runtime.osx-x64 >= 9.0.0, <= 9.0.20`
- `Microsoft.NETCore.App.Runtime.linux-arm >= 11.0.0-preview.1, <= 11.0.0-rc.1`
- `Microsoft.NETCore.App.Runtime.linux-arm64 >= 11.0.0-preview.1, <= 11.0.0-rc.1`
- `Microsoft.NETCore.App.Runtime.linux-musl-arm >= 11.0.0-preview.1, <= 11.0.0-rc.1`
- `Microsoft.NETCore.App.Runtime.linux-musl-arm64 >= 11.0.0-preview.1, <= 11.0.0-rc.1`
- `Microsoft.NETCore.App.Runtime.linux-musl-x64 >= 11.0.0-preview.1, <= 11.0.0-rc.1`
- `Microsoft.NETCore.App.Runtime.linux-x64 >= 11.0.0-preview.1, <= 11.0.0-rc.1`
- `Microsoft.NETCore.App.Runtime.osx-arm64 >= 11.0.0-preview.1, <= 11.0.0-rc.1`
- `Microsoft.NETCore.App.Runtime.osx-x64 >= 11.0.0-preview.1, <= 11.0.0-rc.1`

Patched in:

- `Microsoft.NETCore.App.Runtime.linux-arm 8.0.32`
- `Microsoft.NETCore.App.Runtime.linux-arm64 8.0.32`
- `Microsoft.NETCore.App.Runtime.linux-musl-arm 8.0.32`
- `Microsoft.NETCore.App.Runtime.linux-musl-arm64 8.0.32`
- `Microsoft.NETCore.App.Runtime.linux-musl-x64 8.0.32`
- `Microsoft.NETCore.App.Runtime.linux-x64 8.0.32`
- `Microsoft.NETCore.App.Runtime.osx-arm64 8.0.32`
- `Microsoft.NETCore.App.Runtime.osx-x64 8.0.32`
- `Microsoft.NETCore.App.Runtime.linux-arm 10.0.13`
- `Microsoft.NETCore.App.Runtime.linux-arm64 10.0.13`
- `Microsoft.NETCore.App.Runtime.linux-musl-arm 10.0.13`
- `Microsoft.NETCore.App.Runtime.linux-musl-arm64 10.0.13`
- `Microsoft.NETCore.App.Runtime.linux-musl-x64 10.0.13`
- `Microsoft.NETCore.App.Runtime.linux-x64 10.0.13`
- `Microsoft.NETCore.App.Runtime.osx-arm64 10.0.13`
- `Microsoft.NETCore.App.Runtime.osx-x64 10.0.13`
- `Microsoft.NETCore.App.Runtime.linux-arm 9.0.21`
- `Microsoft.NETCore.App.Runtime.linux-arm64 9.0.21`
- `Microsoft.NETCore.App.Runtime.linux-musl-arm 9.0.21`
- `Microsoft.NETCore.App.Runtime.linux-musl-arm64 9.0.21`
- `Microsoft.NETCore.App.Runtime.linux-musl-x64 9.0.21`
- `Microsoft.NETCore.App.Runtime.linux-x64 9.0.21`
- `Microsoft.NETCore.App.Runtime.osx-arm64 9.0.21`
- `Microsoft.NETCore.App.Runtime.osx-x64 9.0.21`
- `Microsoft.NETCore.App.Runtime.linux-arm 11.0.0-rc.2`
- `Microsoft.NETCore.App.Runtime.linux-arm64 11.0.0-rc.2`
- `Microsoft.NETCore.App.Runtime.linux-musl-arm 11.0.0-rc.2`
- `Microsoft.NETCore.App.Runtime.linux-musl-arm64 11.0.0-rc.2`
- `Microsoft.NETCore.App.Runtime.linux-musl-x64 11.0.0-rc.2`
- `Microsoft.NETCore.App.Runtime.linux-x64 11.0.0-rc.2`
- `Microsoft.NETCore.App.Runtime.osx-arm64 11.0.0-rc.2`
- `Microsoft.NETCore.App.Runtime.osx-x64 11.0.0-rc.2`

Source: https://github.com/advisories/GHSA-2j93-m82w-73j2

## Vendor advisories

- **RHSA-2026:86195** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) · released 2026-10-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:86195)
- **RHSA-2026:86168** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) · released 2026-10-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:86168)
- **RHSA-2026:86172** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) · released 2026-10-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:86172)
- **RHSA-2026:86192** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux CRB (v. 8) · released 2026-10-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:86192)
- **RHSA-2026:86594** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux CRB (v. 8) · released 2026-10-21 · [advisory](https://access.redhat.com/errata/RHSA-2026:86594)
- **RHSA-2026:86170** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux CRB (v. 8) · released 2026-10-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:86170)
- **RHSA-2026:86193** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) · released 2026-10-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:86193)
- **RHSA-2026:86169** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) · released 2026-10-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:86169)
- **RHSA-2026:86171** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) · released 2026-10-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:86171)
- **RHSA-2026:84491** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-10-18 · [advisory](https://access.redhat.com/errata/RHSA-2026:84491)
- **RHSA-2026:84693** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-10-19 · [advisory](https://access.redhat.com/errata/RHSA-2026:84693)
- **RHSA-2026:88474** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) · released 2026-10-22 · [advisory](https://access.redhat.com/errata/RHSA-2026:88474)
- **RHSA-2026:88424** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) · released 2026-10-22 · [advisory](https://access.redhat.com/errata/RHSA-2026:88424)
- **RHSA-2026:88425** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream E4S (v.9.4) · released 2026-10-22 · [advisory](https://access.redhat.com/errata/RHSA-2026:88425)
- **RHSA-2026:88422** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v.9.6), Red Hat CodeReady Linux Builder EUS (v.9.6) · released 2026-10-22 · [advisory](https://access.redhat.com/errata/RHSA-2026:88422)