CVE-2024-21392: .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: 3.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-03-12 · updated 2026-06-17
Weakness: CWE-400

Description

.NET and Visual Studio Denial of Service Vulnerability

Affected products

Microsoft .NET: from 7.0.0 before 7.0.17; from 8.0.0 before 8.0.3 — fixed in 7.0.17, 8.0.3
Microsoft Powershell: from 7.3 before 7.3.12; 7.4 — fixed in 7.3.12
Microsoft Visual Studio 2022 version 17.14: from 17.4 before 17.4.17; from 17.6 before 17.6.13; from 17.8 before 17.8.8; from 17.9 before 17.9.3 — fixed in 17.4.17, 17.6.13, 17.8.8, 17.9.3
Microsoft .NET 7.0: from 7.0.0 before 7.0.17 — fixed in 7.0.17
Microsoft .NET 8.0: from 8.0 before 8.0.3 — fixed in 8.0.3
Microsoft Visual Studio 2022 version 17.4: from 17.4.0 before 17.4.17 — fixed in 17.4.17
Microsoft Visual Studio 2022 version 17.6: from 17.6.0 before 17.6.13 — fixed in 17.6.13
Microsoft Visual Studio 2022 version 17.8: from 17.8.0 before 17.8.8 — fixed in 17.8.8
Microsoft Visual Studio 2022 version 17.9: from 17.0 before 17.9.3 — fixed in 17.9.3
Microsoft PowerShell 7.3: from 7.3.0 before 7.3.12 — fixed in 7.3.12
Microsoft PowerShell 7.4: from 7.4.0 before 7.4.1 — fixed in 7.4.1

How to fix

Upgrade to a fixed version: Microsoft .NET 7.0.17, 8.0.3; Microsoft Powershell 7.3.12; Microsoft Visual Studio 2022 version 17.14 17.4.17, 17.6.13, 17.8.8, 17.9.3; Microsoft .NET 7.0 7.0.17; Microsoft .NET 8.0 8.0.3; Microsoft Visual Studio 2022 version 17.4 17.4.17; Microsoft Visual Studio 2022 version 17.6 17.6.13; Microsoft Visual Studio 2022 version 17.8 17.8.8; Microsoft Visual Studio 2022 version 17.9 17.9.3; Microsoft PowerShell 7.3 7.3.12; Microsoft PowerShell 7.4 7.4.1. Check the vendor advisory for mitigations.

References

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