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CVE-2023-36049: .NET, .NET Framework, and Visual Studio Elevation of Privilege Vulnerability

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 6.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-11-14 · updated 2026-06-17
• Weakness: CWE-20

Description

.NET, .NET Framework, and Visual Studio Elevation of Privilege Vulnerability

Affected products

• Microsoft .NET: from 6.0.0 before 6.0.25; from 7.0.0 before 7.0.14; 8.0.0-rc1, 8.0.0-rc2 — fixed in 6.0.25, 7.0.14
• Microsoft .NET Framework: 2.0-sp2, 3.0-sp2, 3.5, 4.6.2, 4.7, 4.7.1 (+4)
• Microsoft Visual Studio 2022 version 17.14: from 17.2 before 17.2.22; from 17.4 before 17.4.14; from 17.6 before 17.6.10; from 17.7 before 17.7.7 — fixed in 17.2.22, 17.4.14, 17.6.10, 17.7.7
• Microsoft .NET 6.0: from 6.0.0 before 6.0.25 — fixed in 6.0.25
• Microsoft .NET 7.0: from 7.0.0 before 7.0.14 — fixed in 7.0.14
• Microsoft .NET 8.0: from 8.0 before 8.0.0 — fixed in 8.0.0
• Microsoft .NET Framework 2.0 Service Pack 2: from 2.0.0 before 3.0.50727.8975 — fixed in 3.0.50727.8975
• Microsoft .NET Framework 3.0 Service Pack 2: from 3.0.0 before 3.0.50727.8975 — fixed in 3.0.50727.8975
• Microsoft .NET Framework 3.5: from 3.5.0 before 3.0.50727.8975 — fixed in 3.0.50727.8975
• Microsoft .NET Framework 3.5.1: from 3.5.0 before 3.0.50727.8975 — fixed in 3.0.50727.8975
• Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2: from 3.0.0.0 before 10.0.14393.6452 — fixed in 10.0.14393.6452
• Microsoft .NET Framework 3.5 AND 4.6/4.6.2: from 10.0.0 before 10.0.10240.20308 — fixed in 10.0.10240.20308
• Microsoft .NET Framework 3.5 AND 4.7.2: from 4.7.0 before 4.7.4076.0 — fixed in 4.7.4076.0
• Microsoft .NET Framework 3.5 AND 4.8: from 4.8.0 before 4.8.4682.0 — fixed in 4.8.4682.0
• Microsoft .NET Framework 3.5 AND 4.8.1: from 4.8.1 before 4.8.9206.0 — fixed in 4.8.9206.0
• Microsoft .NET Framework 4.6.2: from 4.7.0 before 4.7.4076.0 — fixed in 4.7.4076.0
• Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2: from 4.7.0 before 4.7.4076.0 — fixed in 4.7.4076.0
• Microsoft .NET Framework 4.8: from 4.8.0 before 4.8.4682.0 — fixed in 4.8.4682.0
• Microsoft Visual Studio 2022 version 17.2: from 17.2.0 before 17.2.22 — fixed in 17.2.22
• Microsoft Visual Studio 2022 version 17.4: from 17.4.0 before 17.4.14 — fixed in 17.4.14
• Microsoft Visual Studio 2022 version 17.6: from 17.6.0 before 17.6.10 — fixed in 17.6.10
• Microsoft Visual Studio 2022 version 17.14: from 17.7.0 before 17.7.7 — fixed in 17.7.7

How to fix

Upgrade to a fixed version: Microsoft .NET 6.0.25, 7.0.14; Microsoft Visual Studio 2022 version 17.14 17.2.22, 17.4.14, 17.6.10, 17.7.7; Microsoft .NET 6.0 6.0.25; Microsoft .NET 7.0 7.0.14; Microsoft .NET 8.0 8.0.0; Microsoft .NET Framework 2.0 Service Pack 2 3.0.50727.8975; Microsoft .NET Framework 3.0 Service Pack 2 3.0.50727.8975; Microsoft .NET Framework 3.5 3.0.50727.8975; Microsoft .NET Framework 3.5.1 3.0.50727.8975; Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 10.0.14393.6452; Microsoft .NET Framework 3.5 AND 4.6/4.6.2 10.0.10240.20308; Microsoft .NET Framework 3.5 AND 4.7.2 4.7.4076.0. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36049
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36049

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