---
id: CVE-2026-114148
title: ASP.NET Core Elevation of Privilege Vulnerability
summary: >-
  Incorrect default permissions in ASP.NET Core 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/E:U/RL:O/RC:C'
cvssSource: cna
cwe:
  - CWE-276
vendor: Microsoft
product: .NET 10.0 installed on Linux
affected:
  - .net_10.0_installed_on_linux >= 10.0.0 < 10.0.403
  - .net_10.0_installed_on_mac_os >= 10.0.0 < 10.0.403
  - .net_10.0_installed_on_windows >= 10.0.0 < 10.0.403
  - .net_11.0_installed_on_linux >= 11.0.0-preview.1 < 11.0.100-rc.3
  - .net_11.0_installed_on_mac_os >= 11.0.0-preview.1 < 11.0.100-rc.3
  - .net_11.0_installed_on_windows >= 11.0.0-preview.1 < 11.0.100-rc.3
  - .net_8.0_installed_on_linux >= 8.0.0 < 8.0.427
  - .net_8.0_installed_on_mac_os >= 8.0.0 < 8.0.427
  - .net_8.0_installed_on_windows >= 8.0.0 < 8.0.427
  - .net_9.0_installed_on_linux >= 9.0.0 < 9.0.320
  - .net_9.0_installed_on_mac_os >= 9.0.0 < 9.0.320
  - .net_9.0_installed_on_windows >= 9.0.0 < 9.0.320
  - >-
    .net_source-build_linux_tarballs_all_archive_types >= 8.0.100 <
    10.0.403-servicing.26523.112
  - >-
    asp.net_core_runtime_and_targeting-pack_linux_tarballs_microsoft-published
    >= 8.0.0 < 9.0.22
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-30T13:38:21.442156Z'
exploitAvailable: true
published: '2026-10-29'
updated: '2026-10-31'
sourceUpdated: '2026-10-31T18:13:34.093Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-114148'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-114148'
    label: ASP.NET Core Elevation of Privilege Vulnerability
tags:
  - cve.org
  - exploit-available
epss: 0.00355
epssPercentile: 0.29337
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/Ghost-Bx1/DotNet-Tarball-CVE-2026-114148'
  checkedAt: '2026-11-05T18:29:26.737Z'
ingestedAt: '2026-11-05T18:28:50.640Z'
---

## Overview

Incorrect default permissions in ASP.NET Core allows an authorized attacker to elevate privileges locally.

## Affected

- `.net_10.0_installed_on_linux >= 10.0.0 < 10.0.403`
- `.net_10.0_installed_on_mac_os >= 10.0.0 < 10.0.403`
- `.net_10.0_installed_on_windows >= 10.0.0 < 10.0.403`
- `.net_11.0_installed_on_linux >= 11.0.0-preview.1 < 11.0.100-rc.3`
- `.net_11.0_installed_on_mac_os >= 11.0.0-preview.1 < 11.0.100-rc.3`
- `.net_11.0_installed_on_windows >= 11.0.0-preview.1 < 11.0.100-rc.3`
- `.net_8.0_installed_on_linux >= 8.0.0 < 8.0.427`
- `.net_8.0_installed_on_mac_os >= 8.0.0 < 8.0.427`
- `.net_8.0_installed_on_windows >= 8.0.0 < 8.0.427`
- `.net_9.0_installed_on_linux >= 9.0.0 < 9.0.320`
- `.net_9.0_installed_on_mac_os >= 9.0.0 < 9.0.320`
- `.net_9.0_installed_on_windows >= 9.0.0 < 9.0.320`
- `.net_source-build_linux_tarballs_all_archive_types >= 8.0.100 < 10.0.403-servicing.26523.112`
- `asp.net_core_runtime_and_targeting-pack_linux_tarballs_microsoft-published >= 8.0.0 < 9.0.22`

## Remediation

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