---
id: CVE-2021-24112
title: .NET Core Remote Code Execution Vulnerability
summary: .NET Core Remote Code Execution Vulnerability
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-94
vendor: microsoft
product: .net
affected:
  - '.net >= 5.0, <= 5.0.2'
  - '.net_core >= 2.1, <= 2.1.24'
  - '.net_core >= 3.1, <= 3.1.11'
  - 'mono >= 6.12.0, < 6.12.0.122'
  - visual_studio_2019
patched:
  - mono 6.12.0.122
published: '2021-02-25'
updated: '2026-10-07'
sourceUpdated: '2026-10-07T17:16:42.150'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2021-24112'
references:
  - url: >-
      https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-24112
    label: secure@microsoft.com
  - url: >-
      https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-24112
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2026-10-07T16:14:17.344475Z'
epss: 0.0327
epssPercentile: 0.88049
ingestedAt: '2026-10-07T16:38:22.251Z'
---

## Overview

.NET Core Remote Code Execution Vulnerability

## Affected

- `.net >= 5.0, <= 5.0.2`
- `.net_core >= 2.1, <= 2.1.24`
- `.net_core >= 3.1, <= 3.1.11`
- `mono >= 6.12.0, < 6.12.0.122`
- `visual_studio_2019`

## Remediation

Upgrade past the affected range:

- `mono 6.12.0.122`