# CVE-2026-21218: .NET Spoofing Vulnerability

CVE-2026-21218 is fixed in 56 products on 3 platforms, first by aspnetcore-runtime-10.0 10.0.3-0ubuntu1~24.04.1, released February 9, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-21218
- Priority: High
- CVSS: 7.5 (Important)
- EPSS: 0.0100
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: Exploitation Unlikely
- Published: Feb 9, 2026
- Weakness: Improper Handling of Missing Special Element
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21218

## Description

<p>Improper handling of missing special element in .NET allows an unauthorized attacker to perform spoofing over a network.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | .NET 10.0 runtime installed on Linux |  | [KB5077862](https://patchblox.com/security/data/fix/microsoft/kb5077862.md) | Feb 10, 2026 |
| Microsoft | .NET 10.0 runtime installed on Mac OS |  | [KB5077862](https://patchblox.com/security/data/fix/microsoft/kb5077862.md) | Feb 10, 2026 |
| Microsoft | .NET 10.0 runtime installed on Windows |  | [KB5077862](https://patchblox.com/security/data/fix/microsoft/kb5077862.md) | Feb 10, 2026 |
| Microsoft | .NET 8.0 runtime installed on Linux |  | [KB5077863](https://patchblox.com/security/data/fix/microsoft/kb5077863.md) | Feb 10, 2026 |
| Microsoft | .NET 8.0 runtime installed on Mac OS |  | [KB5077863](https://patchblox.com/security/data/fix/microsoft/kb5077863.md) | Feb 10, 2026 |
| Microsoft | .NET 8.0 runtime installed on Windows |  | [KB5077863](https://patchblox.com/security/data/fix/microsoft/kb5077863.md) | Feb 10, 2026 |
| Microsoft | .NET 9.0 runtime installed on Linux |  | [KB5077864](https://patchblox.com/security/data/fix/microsoft/kb5077864.md) | Feb 10, 2026 |
| Microsoft | .NET 9.0 runtime installed on Mac OS |  | [KB5077864](https://patchblox.com/security/data/fix/microsoft/kb5077864.md) | Feb 10, 2026 |
| Microsoft | .NET 9.0 runtime installed on Windows |  | [KB5077864](https://patchblox.com/security/data/fix/microsoft/kb5077864.md) | Feb 10, 2026 |
| Windows apps | Microsoft .NET Windows Desktop Runtime 8.0 | 8.0.30 | [Microsoft .NET Windows Desktop Runtime 8.0 8.0.30](https://patchblox.com/security/data/fix/windows-app/microsoft.dotnet.desktopruntime.8-8.0.30.md) | Jul 23, 2026 |
| Linux | aspnetcore-runtime-10.0 Ubuntu 24.04.5 LTS (noble) | 10.0.3-0ubuntu1~24.04.1 | [aspnetcore-runtime-10.0 10.0.3-0ubuntu1~24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-aspnetcore-runtime-10.0-10.0.3-0ubuntu1-24.04.1.md) | Feb 9, 2026 |
| Linux | aspnetcore-runtime-10.0 Ubuntu 25.10 (questing) | 10.0.3-0ubuntu1~25.10.1 | [aspnetcore-runtime-10.0 10.0.3-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-aspnetcore-runtime-10.0-10.0.3-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | aspnetcore-runtime-8.0 Ubuntu 22.04.1 LTS (jammy) | 8.0.24-0ubuntu1~22.04.1 | [aspnetcore-runtime-8.0 8.0.24-0ubuntu1~22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-aspnetcore-runtime-8.0-8.0.24-0ubuntu1-22.04.1.md) | Feb 9, 2026 |
| Linux | aspnetcore-runtime-8.0 Ubuntu 24.04.5 LTS (noble) | 8.0.24-0ubuntu1~24.04.1 | [aspnetcore-runtime-8.0 8.0.24-0ubuntu1~24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-aspnetcore-runtime-8.0-8.0.24-0ubuntu1-24.04.1.md) | Feb 9, 2026 |
| Linux | aspnetcore-runtime-8.0 Ubuntu 25.10 (questing) | 8.0.24-0ubuntu1~25.10.1 | [aspnetcore-runtime-8.0 8.0.24-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-aspnetcore-runtime-8.0-8.0.24-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | aspnetcore-runtime-9.0 Ubuntu 25.10 (questing) | 9.0.13-0ubuntu1~25.10.1 | [aspnetcore-runtime-9.0 9.0.13-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-aspnetcore-runtime-9.0-9.0.13-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | aspnetcore-runtime-dbg-10.0 Ubuntu 24.04.5 LTS (noble) | 10.0.3-0ubuntu1~24.04.1 | [aspnetcore-runtime-dbg-10.0 10.0.3-0ubuntu1~24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-aspnetcore-runtime-dbg-10.0-10.0.3-0ubuntu1-24.04.1.md) | Feb 9, 2026 |
| Linux | aspnetcore-runtime-dbg-10.0 Ubuntu 25.10 (questing) | 10.0.3-0ubuntu1~25.10.1 | [aspnetcore-runtime-dbg-10.0 10.0.3-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-aspnetcore-runtime-dbg-10.0-10.0.3-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | aspnetcore-runtime-dbg-8.0 Ubuntu 22.04.1 LTS (jammy) | 8.0.24-0ubuntu1~22.04.1 | [aspnetcore-runtime-dbg-8.0 8.0.24-0ubuntu1~22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-aspnetcore-runtime-dbg-8.0-8.0.24-0ubuntu1-22.04.1.md) | Feb 9, 2026 |
| Linux | aspnetcore-runtime-dbg-8.0 Ubuntu 24.04.5 LTS (noble) | 8.0.24-0ubuntu1~24.04.1 | [aspnetcore-runtime-dbg-8.0 8.0.24-0ubuntu1~24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-aspnetcore-runtime-dbg-8.0-8.0.24-0ubuntu1-24.04.1.md) | Feb 9, 2026 |
| Linux | aspnetcore-runtime-dbg-8.0 Ubuntu 25.10 (questing) | 8.0.24-0ubuntu1~25.10.1 | [aspnetcore-runtime-dbg-8.0 8.0.24-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-aspnetcore-runtime-dbg-8.0-8.0.24-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | aspnetcore-runtime-dbg-9.0 Ubuntu 25.10 (questing) | 9.0.13-0ubuntu1~25.10.1 | [aspnetcore-runtime-dbg-9.0 9.0.13-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-aspnetcore-runtime-dbg-9.0-9.0.13-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | aspnetcore-targeting-pack-10.0 Ubuntu 24.04.5 LTS (noble) | 10.0.3-0ubuntu1~24.04.1 | [aspnetcore-targeting-pack-10.0 10.0.3-0ubuntu1~24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-aspnetcore-targeting-pack-10.0-10.0.3-0ubuntu1-24.04.1.md) | Feb 9, 2026 |
| Linux | aspnetcore-targeting-pack-10.0 Ubuntu 25.10 (questing) | 10.0.3-0ubuntu1~25.10.1 | [aspnetcore-targeting-pack-10.0 10.0.3-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-aspnetcore-targeting-pack-10.0-10.0.3-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | aspnetcore-targeting-pack-8.0 Ubuntu 22.04.1 LTS (jammy) | 8.0.24-0ubuntu1~22.04.1 | [aspnetcore-targeting-pack-8.0 8.0.24-0ubuntu1~22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-aspnetcore-targeting-pack-8.0-8.0.24-0ubuntu1-22.04.1.md) | Feb 9, 2026 |
| Linux | aspnetcore-targeting-pack-8.0 Ubuntu 24.04.5 LTS (noble) | 8.0.24-0ubuntu1~24.04.1 | [aspnetcore-targeting-pack-8.0 8.0.24-0ubuntu1~24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-aspnetcore-targeting-pack-8.0-8.0.24-0ubuntu1-24.04.1.md) | Feb 9, 2026 |
| Linux | aspnetcore-targeting-pack-8.0 Ubuntu 25.10 (questing) | 8.0.24-0ubuntu1~25.10.1 | [aspnetcore-targeting-pack-8.0 8.0.24-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-aspnetcore-targeting-pack-8.0-8.0.24-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | aspnetcore-targeting-pack-9.0 Ubuntu 25.10 (questing) | 9.0.13-0ubuntu1~25.10.1 | [aspnetcore-targeting-pack-9.0 9.0.13-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-aspnetcore-targeting-pack-9.0-9.0.13-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet-apphost-pack-10.0 Ubuntu 24.04.5 LTS (noble) | 10.0.3-0ubuntu1~24.04.1 | [dotnet-apphost-pack-10.0 10.0.3-0ubuntu1~24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dotnet-apphost-pack-10.0-10.0.3-0ubuntu1-24.04.1.md) | Feb 9, 2026 |
| Linux | dotnet-apphost-pack-10.0 Ubuntu 25.10 (questing) | 10.0.3-0ubuntu1~25.10.1 | [dotnet-apphost-pack-10.0 10.0.3-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet-apphost-pack-10.0-10.0.3-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet-apphost-pack-8.0 Ubuntu 22.04.1 LTS (jammy) | 8.0.24-0ubuntu1~22.04.1 | [dotnet-apphost-pack-8.0 8.0.24-0ubuntu1~22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-dotnet-apphost-pack-8.0-8.0.24-0ubuntu1-22.04.1.md) | Feb 9, 2026 |
| Linux | dotnet-apphost-pack-8.0 Ubuntu 24.04.5 LTS (noble) | 8.0.24-0ubuntu1~24.04.1 | [dotnet-apphost-pack-8.0 8.0.24-0ubuntu1~24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dotnet-apphost-pack-8.0-8.0.24-0ubuntu1-24.04.1.md) | Feb 9, 2026 |
| Linux | dotnet-apphost-pack-8.0 Ubuntu 25.10 (questing) | 8.0.24-0ubuntu1~25.10.1 | [dotnet-apphost-pack-8.0 8.0.24-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet-apphost-pack-8.0-8.0.24-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet-apphost-pack-9.0 Ubuntu 25.10 (questing) | 9.0.13-0ubuntu1~25.10.1 | [dotnet-apphost-pack-9.0 9.0.13-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet-apphost-pack-9.0-9.0.13-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet-host-10.0 Ubuntu 24.04.5 LTS (noble) | 10.0.3-0ubuntu1~24.04.1 | [dotnet-host-10.0 10.0.3-0ubuntu1~24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dotnet-host-10.0-10.0.3-0ubuntu1-24.04.1.md) | Feb 9, 2026 |
| Linux | dotnet-host-10.0 Ubuntu 25.10 (questing) | 10.0.3-0ubuntu1~25.10.1 | [dotnet-host-10.0 10.0.3-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet-host-10.0-10.0.3-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet-host-8.0 Ubuntu 22.04.1 LTS (jammy) | 8.0.24-0ubuntu1~22.04.1 | [dotnet-host-8.0 8.0.24-0ubuntu1~22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-dotnet-host-8.0-8.0.24-0ubuntu1-22.04.1.md) | Feb 9, 2026 |
| Linux | dotnet-host-8.0 Ubuntu 24.04.5 LTS (noble) | 8.0.24-0ubuntu1~24.04.1 | [dotnet-host-8.0 8.0.24-0ubuntu1~24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dotnet-host-8.0-8.0.24-0ubuntu1-24.04.1.md) | Feb 9, 2026 |
| Linux | dotnet-host-8.0 Ubuntu 25.10 (questing) | 8.0.24-0ubuntu1~25.10.1 | [dotnet-host-8.0 8.0.24-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet-host-8.0-8.0.24-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet-host-9.0 Ubuntu 25.10 (questing) | 9.0.13-0ubuntu1~25.10.1 | [dotnet-host-9.0 9.0.13-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet-host-9.0-9.0.13-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet-hostfxr-10.0 Ubuntu 24.04.5 LTS (noble) | 10.0.3-0ubuntu1~24.04.1 | [dotnet-hostfxr-10.0 10.0.3-0ubuntu1~24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dotnet-hostfxr-10.0-10.0.3-0ubuntu1-24.04.1.md) | Feb 9, 2026 |
| Linux | dotnet-hostfxr-10.0 Ubuntu 25.10 (questing) | 10.0.3-0ubuntu1~25.10.1 | [dotnet-hostfxr-10.0 10.0.3-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet-hostfxr-10.0-10.0.3-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet-hostfxr-8.0 Ubuntu 22.04.1 LTS (jammy) | 8.0.24-0ubuntu1~22.04.1 | [dotnet-hostfxr-8.0 8.0.24-0ubuntu1~22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-dotnet-hostfxr-8.0-8.0.24-0ubuntu1-22.04.1.md) | Feb 9, 2026 |
| Linux | dotnet-hostfxr-8.0 Ubuntu 24.04.5 LTS (noble) | 8.0.24-0ubuntu1~24.04.1 | [dotnet-hostfxr-8.0 8.0.24-0ubuntu1~24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dotnet-hostfxr-8.0-8.0.24-0ubuntu1-24.04.1.md) | Feb 9, 2026 |
| Linux | dotnet-hostfxr-8.0 Ubuntu 25.10 (questing) | 8.0.24-0ubuntu1~25.10.1 | [dotnet-hostfxr-8.0 8.0.24-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet-hostfxr-8.0-8.0.24-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet-hostfxr-9.0 Ubuntu 25.10 (questing) | 9.0.13-0ubuntu1~25.10.1 | [dotnet-hostfxr-9.0 9.0.13-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet-hostfxr-9.0-9.0.13-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet-runtime-10.0 Ubuntu 24.04.5 LTS (noble) | 10.0.3-0ubuntu1~24.04.1 | [dotnet-runtime-10.0 10.0.3-0ubuntu1~24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dotnet-runtime-10.0-10.0.3-0ubuntu1-24.04.1.md) | Feb 9, 2026 |
| Linux | dotnet-runtime-10.0 Ubuntu 25.10 (questing) | 10.0.3-0ubuntu1~25.10.1 | [dotnet-runtime-10.0 10.0.3-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet-runtime-10.0-10.0.3-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet-runtime-8.0 Ubuntu 22.04.1 LTS (jammy) | 8.0.24-0ubuntu1~22.04.1 | [dotnet-runtime-8.0 8.0.24-0ubuntu1~22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-dotnet-runtime-8.0-8.0.24-0ubuntu1-22.04.1.md) | Feb 9, 2026 |
| Linux | dotnet-runtime-8.0 Ubuntu 24.04.5 LTS (noble) | 8.0.24-0ubuntu1~24.04.1 | [dotnet-runtime-8.0 8.0.24-0ubuntu1~24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dotnet-runtime-8.0-8.0.24-0ubuntu1-24.04.1.md) | Feb 9, 2026 |
| Linux | dotnet-runtime-8.0 Ubuntu 25.10 (questing) | 8.0.24-0ubuntu1~25.10.1 | [dotnet-runtime-8.0 8.0.24-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet-runtime-8.0-8.0.24-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet-runtime-9.0 Ubuntu 25.10 (questing) | 9.0.13-0ubuntu1~25.10.1 | [dotnet-runtime-9.0 9.0.13-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet-runtime-9.0-9.0.13-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet-runtime-dbg-10.0 Ubuntu 24.04.5 LTS (noble) | 10.0.3-0ubuntu1~24.04.1 | [dotnet-runtime-dbg-10.0 10.0.3-0ubuntu1~24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dotnet-runtime-dbg-10.0-10.0.3-0ubuntu1-24.04.1.md) | Feb 9, 2026 |
| Linux | dotnet-runtime-dbg-10.0 Ubuntu 25.10 (questing) | 10.0.3-0ubuntu1~25.10.1 | [dotnet-runtime-dbg-10.0 10.0.3-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet-runtime-dbg-10.0-10.0.3-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet-runtime-dbg-8.0 Ubuntu 22.04.1 LTS (jammy) | 8.0.24-0ubuntu1~22.04.1 | [dotnet-runtime-dbg-8.0 8.0.24-0ubuntu1~22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-dotnet-runtime-dbg-8.0-8.0.24-0ubuntu1-22.04.1.md) | Feb 9, 2026 |
| Linux | dotnet-runtime-dbg-8.0 Ubuntu 24.04.5 LTS (noble) | 8.0.24-0ubuntu1~24.04.1 | [dotnet-runtime-dbg-8.0 8.0.24-0ubuntu1~24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dotnet-runtime-dbg-8.0-8.0.24-0ubuntu1-24.04.1.md) | Feb 9, 2026 |
| Linux | dotnet-runtime-dbg-8.0 Ubuntu 25.10 (questing) | 8.0.24-0ubuntu1~25.10.1 | [dotnet-runtime-dbg-8.0 8.0.24-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet-runtime-dbg-8.0-8.0.24-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet-runtime-dbg-9.0 Ubuntu 25.10 (questing) | 9.0.13-0ubuntu1~25.10.1 | [dotnet-runtime-dbg-9.0 9.0.13-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet-runtime-dbg-9.0-9.0.13-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet-sdk-10.0 Ubuntu 24.04.5 LTS (noble) | 10.0.103-0ubuntu1~24.04.1 | [dotnet-sdk-10.0 10.0.103-0ubuntu1~24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dotnet-sdk-10.0-10.0.103-0ubuntu1-24.04.1.md) | Feb 9, 2026 |
| Linux | dotnet-sdk-10.0 Ubuntu 25.10 (questing) | 10.0.103-0ubuntu1~25.10.1 | [dotnet-sdk-10.0 10.0.103-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet-sdk-10.0-10.0.103-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet-sdk-10.0-source-built-artifacts Ubuntu 24.04.5 LTS (noble) | 10.0.103-0ubuntu1~24.04.1 | [dotnet-sdk-10.0-source-built-artifacts 10.0.103-0ubuntu1~24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dotnet-sdk-10.0-source-built-artifacts-10.0.103-0ubuntu1-24.04.1.md) | Feb 9, 2026 |
| Linux | dotnet-sdk-10.0-source-built-artifacts Ubuntu 25.10 (questing) | 10.0.103-0ubuntu1~25.10.1 | [dotnet-sdk-10.0-source-built-artifacts 10.0.103-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet-sdk-10.0-source-built-artifacts-10.0.103-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet-sdk-8.0 Ubuntu 22.04.1 LTS (jammy) | 8.0.124-0ubuntu1~22.04.1 | [dotnet-sdk-8.0 8.0.124-0ubuntu1~22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-dotnet-sdk-8.0-8.0.124-0ubuntu1-22.04.1.md) | Feb 9, 2026 |
| Linux | dotnet-sdk-8.0 Ubuntu 24.04.5 LTS (noble) | 8.0.124-0ubuntu1~24.04.1 | [dotnet-sdk-8.0 8.0.124-0ubuntu1~24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dotnet-sdk-8.0-8.0.124-0ubuntu1-24.04.1.md) | Feb 9, 2026 |
| Linux | dotnet-sdk-8.0 Ubuntu 25.10 (questing) | 8.0.124-0ubuntu1~25.10.1 | [dotnet-sdk-8.0 8.0.124-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet-sdk-8.0-8.0.124-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet-sdk-8.0-source-built-artifacts Ubuntu 22.04.1 LTS (jammy) | 8.0.124-0ubuntu1~22.04.1 | [dotnet-sdk-8.0-source-built-artifacts 8.0.124-0ubuntu1~22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-dotnet-sdk-8.0-source-built-artifacts-8.0.124-0ubuntu1-22.04.1.md) | Feb 9, 2026 |
| Linux | dotnet-sdk-8.0-source-built-artifacts Ubuntu 24.04.5 LTS (noble) | 8.0.124-0ubuntu1~24.04.1 | [dotnet-sdk-8.0-source-built-artifacts 8.0.124-0ubuntu1~24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dotnet-sdk-8.0-source-built-artifacts-8.0.124-0ubuntu1-24.04.1.md) | Feb 9, 2026 |
| Linux | dotnet-sdk-8.0-source-built-artifacts Ubuntu 25.10 (questing) | 8.0.124-0ubuntu1~25.10.1 | [dotnet-sdk-8.0-source-built-artifacts 8.0.124-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet-sdk-8.0-source-built-artifacts-8.0.124-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet-sdk-9.0 Ubuntu 25.10 (questing) | 9.0.114-0ubuntu1~25.10.1 | [dotnet-sdk-9.0 9.0.114-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet-sdk-9.0-9.0.114-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet-sdk-9.0-source-built-artifacts Ubuntu 25.10 (questing) | 9.0.114-0ubuntu1~25.10.1 | [dotnet-sdk-9.0-source-built-artifacts 9.0.114-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet-sdk-9.0-source-built-artifacts-9.0.114-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet-sdk-aot-10.0 Ubuntu 24.04.5 LTS (noble) | 10.0.103-0ubuntu1~24.04.1 | [dotnet-sdk-aot-10.0 10.0.103-0ubuntu1~24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dotnet-sdk-aot-10.0-10.0.103-0ubuntu1-24.04.1.md) | Feb 9, 2026 |
| Linux | dotnet-sdk-aot-10.0 Ubuntu 25.10 (questing) | 10.0.103-0ubuntu1~25.10.1 | [dotnet-sdk-aot-10.0 10.0.103-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet-sdk-aot-10.0-10.0.103-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet-sdk-aot-9.0 Ubuntu 25.10 (questing) | 9.0.114-0ubuntu1~25.10.1 | [dotnet-sdk-aot-9.0 9.0.114-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet-sdk-aot-9.0-9.0.114-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet-sdk-dbg-10.0 Ubuntu 24.04.5 LTS (noble) | 10.0.103-0ubuntu1~24.04.1 | [dotnet-sdk-dbg-10.0 10.0.103-0ubuntu1~24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dotnet-sdk-dbg-10.0-10.0.103-0ubuntu1-24.04.1.md) | Feb 9, 2026 |
| Linux | dotnet-sdk-dbg-10.0 Ubuntu 25.10 (questing) | 10.0.103-0ubuntu1~25.10.1 | [dotnet-sdk-dbg-10.0 10.0.103-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet-sdk-dbg-10.0-10.0.103-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet-sdk-dbg-8.0 Ubuntu 22.04.1 LTS (jammy) | 8.0.124-0ubuntu1~22.04.1 | [dotnet-sdk-dbg-8.0 8.0.124-0ubuntu1~22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-dotnet-sdk-dbg-8.0-8.0.124-0ubuntu1-22.04.1.md) | Feb 9, 2026 |
| Linux | dotnet-sdk-dbg-8.0 Ubuntu 24.04.5 LTS (noble) | 8.0.124-0ubuntu1~24.04.1 | [dotnet-sdk-dbg-8.0 8.0.124-0ubuntu1~24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dotnet-sdk-dbg-8.0-8.0.124-0ubuntu1-24.04.1.md) | Feb 9, 2026 |
| Linux | dotnet-sdk-dbg-8.0 Ubuntu 25.10 (questing) | 8.0.124-0ubuntu1~25.10.1 | [dotnet-sdk-dbg-8.0 8.0.124-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet-sdk-dbg-8.0-8.0.124-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet-sdk-dbg-9.0 Ubuntu 25.10 (questing) | 9.0.114-0ubuntu1~25.10.1 | [dotnet-sdk-dbg-9.0 9.0.114-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet-sdk-dbg-9.0-9.0.114-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet-targeting-pack-10.0 Ubuntu 24.04.5 LTS (noble) | 10.0.3-0ubuntu1~24.04.1 | [dotnet-targeting-pack-10.0 10.0.3-0ubuntu1~24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dotnet-targeting-pack-10.0-10.0.3-0ubuntu1-24.04.1.md) | Feb 9, 2026 |
| Linux | dotnet-targeting-pack-10.0 Ubuntu 25.10 (questing) | 10.0.3-0ubuntu1~25.10.1 | [dotnet-targeting-pack-10.0 10.0.3-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet-targeting-pack-10.0-10.0.3-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet-targeting-pack-8.0 Ubuntu 22.04.1 LTS (jammy) | 8.0.24-0ubuntu1~22.04.1 | [dotnet-targeting-pack-8.0 8.0.24-0ubuntu1~22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-dotnet-targeting-pack-8.0-8.0.24-0ubuntu1-22.04.1.md) | Feb 9, 2026 |
| Linux | dotnet-targeting-pack-8.0 Ubuntu 24.04.5 LTS (noble) | 8.0.24-0ubuntu1~24.04.1 | [dotnet-targeting-pack-8.0 8.0.24-0ubuntu1~24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dotnet-targeting-pack-8.0-8.0.24-0ubuntu1-24.04.1.md) | Feb 9, 2026 |
| Linux | dotnet-targeting-pack-8.0 Ubuntu 25.10 (questing) | 8.0.24-0ubuntu1~25.10.1 | [dotnet-targeting-pack-8.0 8.0.24-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet-targeting-pack-8.0-8.0.24-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet-targeting-pack-9.0 Ubuntu 25.10 (questing) | 9.0.13-0ubuntu1~25.10.1 | [dotnet-targeting-pack-9.0 9.0.13-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet-targeting-pack-9.0-9.0.13-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet-templates-10.0 Ubuntu 24.04.5 LTS (noble) | 10.0.103-0ubuntu1~24.04.1 | [dotnet-templates-10.0 10.0.103-0ubuntu1~24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dotnet-templates-10.0-10.0.103-0ubuntu1-24.04.1.md) | Feb 9, 2026 |
| Linux | dotnet-templates-10.0 Ubuntu 25.10 (questing) | 10.0.103-0ubuntu1~25.10.1 | [dotnet-templates-10.0 10.0.103-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet-templates-10.0-10.0.103-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet-templates-8.0 Ubuntu 22.04.1 LTS (jammy) | 8.0.124-0ubuntu1~22.04.1 | [dotnet-templates-8.0 8.0.124-0ubuntu1~22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-dotnet-templates-8.0-8.0.124-0ubuntu1-22.04.1.md) | Feb 9, 2026 |
| Linux | dotnet-templates-8.0 Ubuntu 24.04.5 LTS (noble) | 8.0.124-0ubuntu1~24.04.1 | [dotnet-templates-8.0 8.0.124-0ubuntu1~24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dotnet-templates-8.0-8.0.124-0ubuntu1-24.04.1.md) | Feb 9, 2026 |
| Linux | dotnet-templates-8.0 Ubuntu 25.10 (questing) | 8.0.124-0ubuntu1~25.10.1 | [dotnet-templates-8.0 8.0.124-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet-templates-8.0-8.0.124-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet-templates-9.0 Ubuntu 25.10 (questing) | 9.0.114-0ubuntu1~25.10.1 | [dotnet-templates-9.0 9.0.114-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet-templates-9.0-9.0.114-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet10 Ubuntu 24.04.5 LTS (noble) | 10.0.103-10.0.3-0ubuntu1~24.04.1 | [dotnet10 10.0.103-10.0.3-0ubuntu1~24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dotnet10-10.0.103-10.0.3-0ubuntu1-24.04.1.md) | Feb 9, 2026 |
| Linux | dotnet10 Ubuntu 25.10 (questing) | 10.0.103-10.0.3-0ubuntu1~25.10.1 | [dotnet10 10.0.103-10.0.3-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet10-10.0.103-10.0.3-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet8 Ubuntu 22.04.1 LTS (jammy) | 8.0.124-8.0.24-0ubuntu1~22.04.1 | [dotnet8 8.0.124-8.0.24-0ubuntu1~22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-dotnet8-8.0.124-8.0.24-0ubuntu1-22.04.1.md) | Feb 9, 2026 |
| Linux | dotnet8 Ubuntu 24.04.5 LTS (noble) | 8.0.124-8.0.24-0ubuntu1~24.04.1 | [dotnet8 8.0.124-8.0.24-0ubuntu1~24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-dotnet8-8.0.124-8.0.24-0ubuntu1-24.04.1.md) | Feb 9, 2026 |
| Linux | dotnet8 Ubuntu 25.10 (questing) | 8.0.124-8.0.24-0ubuntu1~25.10.1 | [dotnet8 8.0.124-8.0.24-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet8-8.0.124-8.0.24-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | dotnet9 Ubuntu 25.10 (questing) | 9.0.114-9.0.13-0ubuntu1~25.10.1 | [dotnet9 9.0.114-9.0.13-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-dotnet9-9.0.114-9.0.13-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | netstandard-targeting-pack-2.1-8.0 Ubuntu 22.04.1 LTS (jammy) | 8.0.124-0ubuntu1~22.04.1 | [netstandard-targeting-pack-2.1-8.0 8.0.124-0ubuntu1~22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-netstandard-targeting-pack-2.1-8.0-8.0.124-0ubuntu1-22.04.1.md) | Feb 9, 2026 |
| Linux | netstandard-targeting-pack-2.1-8.0 Ubuntu 24.04.5 LTS (noble) | 8.0.124-0ubuntu1~24.04.1 | [netstandard-targeting-pack-2.1-8.0 8.0.124-0ubuntu1~24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-netstandard-targeting-pack-2.1-8.0-8.0.124-0ubuntu1-24.04.1.md) | Feb 9, 2026 |
| Linux | netstandard-targeting-pack-2.1-8.0 Ubuntu 25.10 (questing) | 8.0.124-0ubuntu1~25.10.1 | [netstandard-targeting-pack-2.1-8.0 8.0.124-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-netstandard-targeting-pack-2.1-8.0-8.0.124-0ubuntu1-25.10.1.md) | Feb 9, 2026 |
| Linux | netstandard-targeting-pack-2.1-9.0 Ubuntu 25.10 (questing) | 9.0.114-0ubuntu1~25.10.1 | [netstandard-targeting-pack-2.1-9.0 9.0.114-0ubuntu1~25.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-netstandard-targeting-pack-2.1-9.0-9.0.114-0ubuntu1-25.10.1.md) | Feb 9, 2026 |

---

Data as of 2026-11-09T01:18:40Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.