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New .NET Core Versions Released with Security Updates

New .NET Core Versions Released with Security Updates

First seen 21 Oct 2026, 16:08 UTC •
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ThreatCluster AI
ThreatCluster •October 21, 2026 at 17:09 UTC
  • •Two new .NET Core versions released on October 21, 2026.
  • •Updates include critical security fixes for ASP.NET Core runtimes.
  • •Developers are urged to upgrade to mitigate security risks.

On October 21, 2026, two new versions of.NET Core were released, addressing vulnerabilities in ASP.NET Core runtimes. Version 11.0.100-11.0.0~rc2-0ubuntu1~26.10.1 and version 10.0.113-10.0.13-0ubuntu1~26.10.1 were published, providing updates for developers. These updates include PDB debug symbols and targeting packs for Microsoft.AspNetCore.App and Microsoft.NETCore.App. The updates are intended for cross-platform applications running on GNU/Linux, macOS, and Windows. Users are advised to upgrade to these versions to mitigate potential security risks. The specific vulnerabilities addressed were not detailed in the articles, but the updates are crucial for maintaining application security.

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Timeline

2026-10-21
Release of .NET Core 11.0.100 and 10.0.113
New versions released to address vulnerabilities in ASP.NET Core runtimes, enhancing security for developers.
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Common questions

What vulnerabilities are addressed in these updates?
The articles did not specify the exact vulnerabilities, but the updates are critical for security.
Which systems are affected by these updates?
The updates affect applications running on ASP.NET Core across GNU/Linux, macOS, and Windows.
How urgent is it to apply these updates?
It is advisable to apply the updates as soon as possible to ensure application security.