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Medium

.NET Information Disclosure Vulnerability

  • Disclosed: 03.02.2024
  • Updated: 11.10.2026 11:23

Microsoft is releasing this security advisory to provide information about a vulnerability in .NET Core 3.1 and .NET 6.0. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.

An information disclosure vulnerability exists in .NET Core 3.1 and .NET 6.0 that could lead to unauthorized access of privileged information.

<a name="affected-software"></a>Affected software

  • Any .NET 6.0 application running on .NET 6.0.7 or earlier.
  • Any .NET Core 3.1 applicaiton running on .NET Core 3.1.27 or earlier.

If your application uses the following package versions, ensure you update to the latest version of .NET.

<a name=".NET Core 3.1"></a>.NET Core 3.1

Package name Affected version Patched version
System.Security.Cryptography.Xml <=4.7.0 4.7.1
Microsoft.AspNetCore.App.Runtime.win-x64 >=3.1.0, 3.1.27 3.1.28
Microsoft.AspNetCore.App.Runtime.linux-x64 >=3.1.0, 3.1.27 3.1.28
Microsoft.AspNetCore.App.Runtime.win-x86 >=3.1.0, 3.1.27 3.1.28
Microsoft.AspNetCore.App.Runtime.osx-x64 >=3.1.0, 3.1.27 3.1.28
Microsoft.AspNetCore.App.Runtime.linux-musl-x64 >=3.1.0, 3.1.27 3.1.28
Microsoft.AspNetCore.App.Runtime.linux-arm64 >=3.1.0, 3.1.27 3.1.28
Microsoft.AspNetCore.App.Runtime.linux-arm >=3.1.0, 3.1.27 3.1.28
Microsoft.AspNetCore.App.Runtime.win-arm64 >=3.1.0, 3.1.27 3.1.28
Microsoft.AspNetCore.App.Runtime.win-arm >=3.1.0, 3.1.27 3.1.28
Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 >=3.1.0, 3.1.27 3.1.28
Microsoft.AspNetCore.App.Runtime.linux-musl-arm >=3.1.0, 3.1.27 3.1.28

<a name=".NET 6"></a>.NET 6

Package name Affected version Patched version
System.Security.Cryptography.Xml >=5.0.0, 6.0.0 6.0.1
Microsoft.AspNetCore.App.Runtime.win-x64 >=6.0.0, 6.0.7 6.0.8
Microsoft.AspNetCore.App.Runtime.linux-x64 >=6.0.0, 6.0.7 6.0.8
Microsoft.AspNetCore.App.Runtime.win-x86 >=6.0.0, 6.0.7 6.0.8
Microsoft.AspNetCore.App.Runtime.osx-x64 >=6.0.0, 6.0.7 6.0.8
Microsoft.AspNetCore.App.Runtime.linux-musl-x64 >=6.0.0, 6.0.7 6.0.8
Microsoft.AspNetCore.App.Runtime.linux-arm64 >=6.0.0, 6.0.7 6.0.8
Microsoft.AspNetCore.App.Runtime.linux-arm >=6.0.0, 6.0.7 6.0.8
Microsoft.AspNetCore.App.Runtime.win-arm64 >=6.0.0, 6.0.7 6.0.8
Microsoft.AspNetCore.App.Runtime.win-arm >=6.0.0, 6.0.7 6.0.8
Microsoft.AspNetCore.App.Runtime.osx-arm64 >=6.0.0, 6.0.7 6.0.8
Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 >=6.0.0, 6.0.7 6.0.8
Microsoft.AspNetCore.App.Runtime.linux-musl-arm >=6.0.0, 6.0.7 6.0.8

Patches

Other

Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/232 An Issue for this can be found at https://github.com/dotnet/aspnetcore/issues/43166 MSRC details for this can be found at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-34716

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
.NET (NuGet) Microsoft.AspNetCore.App.Runtime.linux-arm >= 3.1.0, < 3.1.28, >= 6.0.0, < 6.0.8 3.1.28, 6.0.8
.NET (NuGet) Microsoft.AspNetCore.App.Runtime.linux-arm64 >= 3.1.0, < 3.1.28, >= 6.0.0, < 6.0.8 3.1.28, 6.0.8
.NET (NuGet) Microsoft.AspNetCore.App.Runtime.linux-musl-arm >= 3.1.0, < 3.1.28, >= 6.0.0, < 6.0.8 3.1.28, 6.0.8
.NET (NuGet) Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 >= 3.1.0, < 3.1.28, >= 6.0.0, < 6.0.8 3.1.28, 6.0.8
.NET (NuGet) Microsoft.AspNetCore.App.Runtime.linux-musl-x64 >= 3.1.0, < 3.1.28, >= 6.0.0, < 6.0.8 3.1.28, 6.0.8
.NET (NuGet) Microsoft.AspNetCore.App.Runtime.linux-x64 >= 3.1.0, < 3.1.28, >= 6.0.0, < 6.0.8 3.1.28, 6.0.8
.NET (NuGet) Microsoft.AspNetCore.App.Runtime.osx-arm64 >= 6.0.0, < 6.0.8 6.0.8
.NET (NuGet) Microsoft.AspNetCore.App.Runtime.osx-x64 >= 3.1.0, < 3.1.28, >= 6.0.0, < 6.0.8 3.1.28, 6.0.8
.NET (NuGet) Microsoft.AspNetCore.App.Runtime.win-arm >= 3.1.0, < 3.1.28, >= 6.0.0, < 6.0.8 3.1.28, 6.0.8
.NET (NuGet) Microsoft.AspNetCore.App.Runtime.win-arm64 >= 3.1.0, < 3.1.28, >= 6.0.0, < 6.0.8 3.1.28, 6.0.8
.NET (NuGet) Microsoft.AspNetCore.App.Runtime.win-x64 >= 3.1.0, < 3.1.28, >= 6.0.0, < 6.0.8 3.1.28, 6.0.8
.NET (NuGet) Microsoft.AspNetCore.App.Runtime.win-x86 >= 3.1.0, < 3.1.28, >= 6.0.0, < 6.0.8 3.1.28, 6.0.8
.NET (NuGet) System.Security.Cryptography.Xml < 4.7.1, >= 5.0.0, < 6.0.1 4.7.1, 6.0.1

References

CVSS score 5.9/10
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE)
-
Platform
.NET (NuGet)
Package
Microsoft.AspNetCore.App.Runtime.linux-arm, Microsoft.AspNetCore.App.Runtime.linux-arm64, Microsoft.AspNetCore.App.Runtime.linux-musl-arm
Disclosed
03.02.2024
Updated
11.10.2026 11:23

Sources and licenses

OSV / GitHub Advisory Database - GHSA-vh55-786g-wjwj - CC BY 4.0

Vulnerability history: Microsoft.AspNetCore.App.Runtime.osx-arm64

All published vulnerabilities of this package (.NET (NuGet)), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (19) in the archive
Total entries
19
First → latest
08.2022 10.2026
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • Critical 3
  • High 14
  • Medium 2

Disclosures per year

Severity:
  1. Microsoft Security Advisory CVE-2026-70186 - ASP.NET Core Denial of Service Vulnerability
    High · 7.5 CVE-2026-70186 >= 8.0.0, < 8.0.32, >= 10.0.0, < 10.0.13, >= 9.0.0, < 9.0.21 8.0.32, 10.0.13, 9.0.21
  2. Microsoft Security Advisory CVE-2026-88092 - ASP.NET Core Security Feature Bypass Vulnerability
    Critical · 9.4 CVE-2026-88092 >= 8.0.0, < 8.0.32, >= 10.0.0, < 10.0.13, >= 11.0.0-preview.1, < 11.0.0-rc.2, >= 9.0.0, < 9.0.21 8.0.32, 10.0.13, 11.0.0-rc.2, 9.0.21
  3. Microsoft Security Advisory CVE-2026-56170 – .NET Denial of Service Vulnerability
    High · 7.5 CVE-2026-56170 >= 10.0.0, < 10.0.6, >= 9.0.0, < 9.0.15, >= 8.0.0, < 8.0.26 10.0.6, 9.0.15, 8.0.26
  4. Microsoft Security Advisory CVE-2026-45591 – ASP.NET Core Denial of Service Vulnerability
    High · 7.5 CVE-2026-45591 >= 8.0.0, < 8.0.28, >= 9.0.0, < 9.0.17, >= 10.0.0, < 10.0.9 8.0.28, 9.0.17, 10.0.9
  5. Microsoft Security Advisory CVE-2026-42899 – ASP.NET Core Denial of Service Vulnerability
    High · 7.5 CVE-2026-42899 >= 8.0.0, < 8.0.27, >= 9.0.0, < 9.0.16, >= 10.0.0, < 10.0.8 8.0.27, 9.0.16, 10.0.8
  6. .NET Denial of Service Vulnerability
    High · 7.5 CVE-2026-26130 >= 8.0.0, < 8.0.25, >= 9.0.0, < 9.0.14, >= 10.0.0, < 10.0.4 8.0.25, 9.0.14, 10.0.4
  7. Microsoft Security Advisory CVE-2025-55315: .NET Security Feature Bypass Vulnerability
    Critical · 9.9 CVE-2025-55315 >= 10.0.0-rc.1.25451.107, < 10.0.0-rc.2.25502.107, >= 9.0.0, < 9.0.10, >= 8.0.0, < 8.0.21 10.0.0-rc.2.25502.107, 9.0.10, 8.0.21
  8. Microsoft Security Advisory CVE-2025-24070: .NET Elevation of Privilege Vulnerability
    High · 7.0 CVE-2025-24070 >= 9.0.0, < 9.0.3, >= 8.0.0, < 8.0.14, >= 6.0.0, <= 6.0.36 9.0.3, 8.0.14
  9. Microsoft Security Advisory CVE-2024-38229 | .NET Remote Code Execution Vulnerability
    High · 8.1 CVE-2024-38229 >= 9.0.0-preview.1.24081.5, < 9.0.0-rc.2.24474.3, >= 8.0.0, < 8.0.10 9.0.0-rc.2.24474.3, 8.0.10
  10. Microsoft Security Advisory CVE-2024-35264 | .NET Remote Code Execution Vulnerability
    Critical · 8.1 CVE-2024-35264 >= 8.0.0, < 8.0.7 8.0.7
  11. Microsoft Security Advisory CVE-2024-21386: .NET Denial of Service Vulnerability
    High · 7.5 CVE-2024-21386 < 6.0.27, >= 7.0.0, < 7.0.16, >= 8.0.0, < 8.0.2 6.0.27, 7.0.16, 8.0.2
  12. .NET Information Disclosure Vulnerability this entry
    Medium · 5.9 CVE-2022-34716 >= 6.0.0, < 6.0.8 6.0.8
  13. Microsoft Security Advisory CVE-2023-33170: .NET Security Feature Bypass Vulnerability
    High · 8.1 CVE-2023-33170 >= 7.0.0, < 7.0.9, < 6.0.20 7.0.9, 6.0.20
  14. .NET Denial of Service Vulnerability
    High · 7.5 CVE-2022-23267 >= 6.0.0, < 6.0.5 6.0.5
  15. .NET Denial of Service Vulnerability
    High · 7.5 CVE-2022-24464 >= 6.0.0, < 6.0.3 6.0.3
  16. .NET Denial of Service Vulnerability
    High · 7.5 CVE-2022-21986 >= 6.0.0, < 6.0.2 6.0.2
  17. .NET Denial of Service Vulnerability
    High · 7.5 CVE-2022-38013 >= 5.0.0, < 6.0.9 6.0.9
  18. .NET Denial of Service Vulnerability
    High · 7.5 CVE-2022-29117 >= 6.0.0, < 6.0.5 6.0.5

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