What’s Vulnerable › Vulnerabilities

CVE-2021-24112: .NET Core Remote Code Execution Vulnerability

• Severity: high (CVSS 7.5 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-02-25 · updated 2026-10-07
• Weakness: CWE-94

Description

.NET Core Remote Code Execution Vulnerability

Affected products

• Microsoft .NET: from 5.0 through 5.0.2
• Microsoft Corporation .NET Core: from 2.1 through 2.1.24; from 3.1 through 3.1.11
• Microsoft Mono 6.12.0: from 6.12.0 before 6.12.0.122 — fixed in 6.12.0.122
• Microsoft Visual Studio 2019: all versions
• Microsoft .NET 5.0: from 5.0.0 before publication — fixed in publication
• Microsoft .NET Core 2.1: from 2.1 before publication — fixed in publication
• Microsoft .NET Core 3.1: from 3.1 before publication — fixed in publication
• Microsoft Mono 6.12.0: from 6.12.0 before publication — fixed in publication
• Microsoft Visual Studio 2019 for Mac: from 8.0.0 before publication — fixed in publication

How to fix

Upgrade to a fixed version: Microsoft Mono 6.12.0 6.12.0.122; Microsoft .NET 5.0 publication; Microsoft .NET Core 2.1 publication; Microsoft .NET Core 3.1 publication; Microsoft Mono 6.12.0 publication; Microsoft Visual Studio 2019 for Mac publication. Check the vendor advisory for mitigations.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-24112
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-24112

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