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CVE-2024-43499: .NET and Visual Studio Denial of Service Vulnerability

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-11-12 · updated 2026-06-17
• Weakness: CWE-409

Description

.NET and Visual Studio Denial of Service Vulnerability

Affected products

• Microsoft .NET: 9.0.0
• Microsoft Visual Studio 2022 version 17.14: from 17.6 before 17.6.21; from 17.8 before 17.8.16; from 17.10.0 through 17.10.9; from 17.11.0 before 17.11.6 — fixed in 17.11.6, 17.6.21, 17.8.16
• Microsoft .NET 9.0: from 9.0.0 before 9.0.0 — fixed in 9.0.0
• Microsoft Visual Studio 2022 version 17.10: from 17.10 before 17.10.9 — fixed in 17.10.9
• Microsoft Visual Studio 2022 version 17.11: from 17.11 before 17.11.6 — fixed in 17.11.6
• Microsoft Visual Studio 2022 version 17.6: from 17.6.0 before 17.6.21 — fixed in 17.6.21
• Microsoft Visual Studio 2022 version 17.8: from 17.8.0 before 17.8.16 — fixed in 17.8.16
• Microsoft PowerShell 7.5: from 7.5.0 before 7.5.0 — fixed in 7.5.0

How to fix

Upgrade to a fixed version: Microsoft Visual Studio 2022 version 17.14 17.11.6, 17.6.21, 17.8.16; Microsoft .NET 9.0 9.0.0; Microsoft Visual Studio 2022 version 17.10 17.10.9; Microsoft Visual Studio 2022 version 17.11 17.11.6; Microsoft Visual Studio 2022 version 17.6 17.6.21; Microsoft Visual Studio 2022 version 17.8 17.8.16; Microsoft PowerShell 7.5 7.5.0. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43499

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