CVE-2024-21409: .NET, .NET Framework, and Visual Studio Remote Code Execution Vulnerability

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• microsoft .net6.0.0 and later · before 6.0.29
• microsoft .net7.0.0 and later · before 7.0.18
• microsoft .net8.0.0 and later · before 8.0.4
• microsoft .net framework3.5
• microsoft .net framework4.6.2
• microsoft .net framework4.7
• microsoft .net framework4.7.1
• microsoft .net framework4.7.2
• microsoft .net framework4.8
• microsoft .net framework4.8.1
• microsoft powershell7.3 and later · before 7.3.12
• microsoft powershell7.2 and later · before 7.2.19
• microsoft powershell7.4 and later · before 7.4.2
• microsoft visual studio 202217.8.0 and later · before 17.8.9
• microsoft visual studio 202217.4.0 and later · before 17.4.18
• microsoft visual studio 202217.9.0 and later · before 17.9.6
• microsoft visual studio 202217.6.0 and later · before 17.6.14

Versions reported by the vendor

Affected version ranges reported by the assigning authority (microsoft). Independent of NVD's CPE analysis and usually ahead of it.

• Microsoft .NET 6.0

  • 6.0.0 and later · before 6.0.29affected

• Microsoft .NET 7.0

  • 7.0.0 and later · before 7.0.18affected

• Microsoft .NET 8.0

  • 8.0 and later · before 8.0.4affected

• Microsoft Microsoft .NET Framework 3.5 AND 4.7.2

  • 4.7.0 and later · before 4.7.4092.0affected

• Microsoft Microsoft .NET Framework 3.5 AND 4.8

  • 4.8.0 and later · before 4.8.4718.0affected

• Microsoft Microsoft .NET Framework 3.5 AND 4.8.1

  • 4.8.1 and later · before 4.8.9236.0affected

• Microsoft Microsoft .NET Framework 4.6.2

  • 4.7.0 and later · before 4.7.4092.0affected

• Microsoft Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2

  • 4.7.0 and later · before 4.7.4092.0affected

• Microsoft Microsoft .NET Framework 4.8

  • 4.8.0 and later · before 4.8.4718.0affected

• Microsoft Microsoft Visual Studio 2022 version 17.4

  • 17.4.0 and later · before 17.4.18affected

• Microsoft Microsoft Visual Studio 2022 version 17.6

  • 17.6.0 and later · before 17.6.14affected

• Microsoft Microsoft Visual Studio 2022 version 17.8

  • 17.8.0 and later · before 17.8.9affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Other highest-scoring records for the same primary product.

• CVE-2020-0646A remote code execution vulnerability exists when the Microsoft .NET Framework fails to validate input properly, aka '.NET Framework Remote KEV
  99Now
• CVE-2024-29059.NET Framework Information Disclosure VulnerabilityKEV
  90Now
• CVE-2017-8759Microsoft .NET Framework 2.0, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2 and 4.7 allow an attacker to execute code remotely via a malicious documeKEV
  88Now

Published before and after this one in the same product

• ← EarlierCVE-2023-36049Nov 14, 2023 · .NET, .NET Framework, and Visual Studio Elevation of Privilege Vulnerability
  41Plan
• ← EarlierCVE-2024-21312Jan 9, 2024 · .NET Framework Denial of Service Vulnerability
  31Monitor
• Later →CVE-2024-38081Jul 9, 2024 · .NET, .NET Framework, and Visual Studio Elevation of Privilege Vulnerability
  29Monitor

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1free(dev->buf);2/* ... another thread is still running ... */3process(dev->buf);

1lock(&dev->lock);2free(dev->buf);3dev->buf = NULL;4unlock(&dev->lock);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.