What’s Vulnerable › Vulnerabilities

CVE-2024-21319: Microsoft Identity Denial of service vulnerability

• Severity: medium (CVSS 6.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-01-09 · updated 2026-06-17
• Weakness: CWE-20

Description

Microsoft Identity Denial of service vulnerability

Affected products

• Microsoft .NET: from 6.0.0 before 6.0.26; from 7.0.0 before 7.0.15; from 8.0.0 before 8.0.1 — fixed in 6.0.26, 7.0.15, 8.0.1
• Microsoft Identity Model: from 5.0.0 before 5.7.0; from 6.0.0 before 6.34.0; from 7.0.0 before 7.1.2 — fixed in 5.7.0, 6.34.0, 7.1.2
• Microsoft Visual Studio 2022 version 17.14: from 17.2.0 before 17.2.23; from 17.4.0 before 17.4.15; from 17.6.0 before 17.6.11; from 17.8.0 before 17.8.4 — fixed in 17.2.23, 17.4.15, 17.6.11, 17.8.4
• Microsoft .NET 6.0: from 6.0.0 before 6.0.26 — fixed in 6.0.26
• Microsoft .NET 7.0: from 7.0.0 before 7.0.15 — fixed in 7.0.15
• Microsoft .NET 8.0: from 8.0 before 8.0.1 — fixed in 8.0.1
• Microsoft Identity Model v5.0.0: from 5.0 before 5.7.0 — fixed in 5.7.0
• Microsoft Identity Model v5.0.0 for Nuget: from 5.0 before 5.7.0 — fixed in 5.7.0
• Microsoft Identity Model v6.0.0: from 6.0 before 6.34.0 — fixed in 6.34.0
• Microsoft Identity Model v6.0.0 forNuget: from 6.0 before 6.34.0 — fixed in 6.34.0
• Microsoft Identity Model v7.0.0: from 7.0 before 7.1.2 — fixed in 7.1.2
• Microsoft Identity Model v7.0.0 for Nuget: from 7.0 before 7.1.2 — fixed in 7.1.2
• Microsoft Visual Studio 2022 version 17.2: from 17.2.0 before 17.2.23 — fixed in 17.2.23
• Microsoft Visual Studio 2022 version 17.4: from 17.4.0 before 17.4.15 — fixed in 17.4.15
• Microsoft Visual Studio 2022 version 17.6: from 17.6.0 before 17.6.11 — fixed in 17.6.11
• Microsoft Visual Studio 2022 version 17.8: from 17.8.0 before 17.8.4 — fixed in 17.8.4

How to fix

Upgrade to a fixed version: Microsoft .NET 6.0.26, 7.0.15, 8.0.1; Microsoft Identity Model 5.7.0, 6.34.0, 7.1.2; Microsoft Visual Studio 2022 version 17.14 17.2.23, 17.4.15, 17.6.11, 17.8.4; Microsoft .NET 6.0 6.0.26; Microsoft .NET 7.0 7.0.15; Microsoft .NET 8.0 8.0.1; Microsoft Identity Model v5.0.0 5.7.0; Microsoft Identity Model v5.0.0 for Nuget 5.7.0; Microsoft Identity Model v6.0.0 6.34.0; Microsoft Identity Model v6.0.0 forNuget 6.34.0; Microsoft Identity Model v7.0.0 7.1.2; Microsoft Identity Model v7.0.0 for Nuget 7.1.2. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21319
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21319

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