What’s Vulnerable › Vulnerabilities

CVE-2023-29331: .NET, .NET Framework, 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: 2023-06-14 · updated 2026-06-17
• Weakness: CWE-400

Description

.NET, .NET Framework, and Visual Studio Denial of Service Vulnerability

Affected products

• Microsoft .NET: 6.0.0, 7.0.0
• Microsoft .NET Framework: 4.8, 4.6.2, 4.7, 4.7.1, 4.7.2, 3.5.1 (+4)
• Microsoft .NET 6.0: from 6.0.0 before 6.0.18 — fixed in 6.0.18
• Microsoft .NET 7.0: from 7.0.0 before 7.0.7 — fixed in 7.0.7
• Microsoft .NET Framework 2.0 Service Pack 2: from 2.0.0 before 3.0.6920.8954; 2.0.50727.8970 — fixed in 3.0.6920.8954; 2.0.50727.8970
• Microsoft .NET Framework 3.0 Service Pack 2: from 3.0.0 before 3.0.6920.8954; 2.0.50727.8970 — fixed in 3.0.6920.8954; 2.0.50727.8970
• Microsoft .NET Framework 3.5: from 3.5.0 before 3.0.6920.8954; 2.0.50727.8970 — fixed in 3.0.6920.8954; 2.0.50727.8970
• Microsoft .NET Framework 3.5.1: from 3.5.0 before 3.0.6920.8954; 2.0.50727.8970 — fixed in 3.0.6920.8954; 2.0.50727.8970
• Microsoft .NET Framework 3.5 and 4.6.2: from 4.7.0 before 10.0.10240.19983 — fixed in 10.0.10240.19983
• Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2: from 3.0.0.0 before 10.0.14393.5989 — fixed in 10.0.14393.5989
• Microsoft .NET Framework 3.5 AND 4.7.2: from 4.7.0 before 4.7.4050.0 — fixed in 4.7.4050.0
• Microsoft .NET Framework 3.5 AND 4.8: from 4.8.0 before 4.8.4644.0 — fixed in 4.8.4644.0
• Microsoft .NET Framework 3.5 AND 4.8.1: from 4.8.1 before 4.8.9166.0 — fixed in 4.8.9166.0
• Microsoft .NET Framework 4.6.2: from 4.7.0 before 4.7.04043.0 — fixed in 4.7.04043.0
• Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2: from 4.7.0 before 4.7.04043.0 — fixed in 4.7.04043.0
• Microsoft .NET Framework 4.8: from 4.8.0 before 4.8.4644.0 — fixed in 4.8.4644.0
• Microsoft Visual Studio 2022 version 17.0: from 17.0.0 before 17.0.22 — fixed in 17.0.22
• Microsoft Visual Studio 2022 version 17.2: from 17.2.0 before 17.2.16 — fixed in 17.2.16
• Microsoft Visual Studio 2022 version 17.4: from 17.4.0 before 17.4.8 — fixed in 17.4.8
• Microsoft Visual Studio 2022 version 17.6: from 17.6.0 before 17.6.3 — fixed in 17.6.3
• Microsoft PowerShell 7.2: from 7.2.0 before 7.2.12 — fixed in 7.2.12
• Microsoft PowerShell 7.3: from 7.3.0 before 7.3.5 — fixed in 7.3.5

How to fix

Upgrade to a fixed version: Microsoft .NET 6.0 6.0.18; Microsoft .NET 7.0 7.0.7; Microsoft .NET Framework 2.0 Service Pack 2 3.0.6920.8954; 2.0.50727.8970; Microsoft .NET Framework 3.0 Service Pack 2 3.0.6920.8954; 2.0.50727.8970; Microsoft .NET Framework 3.5 3.0.6920.8954; 2.0.50727.8970; Microsoft .NET Framework 3.5.1 3.0.6920.8954; 2.0.50727.8970; Microsoft .NET Framework 3.5 and 4.6.2 10.0.10240.19983; Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 10.0.14393.5989; Microsoft .NET Framework 3.5 AND 4.7.2 4.7.4050.0; Microsoft .NET Framework 3.5 AND 4.8 4.8.4644.0; Microsoft .NET Framework 3.5 AND 4.8.1 4.8.9166.0; Microsoft .NET Framework 4.6.2 4.7.04043.0. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-29331
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-29331

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