.NET September 2025 Updates

On September 09, 2025, we released .NET 9.0.9, .NET 8.0.20 updates.

## Release Notes

* [.NET September 2025 Update - .NET 9.0.9 and .NET 8.0.20](https://github.com/dotnet/core/issues/10077)
* [.NET 8.0.20 and .NET SDK 8.0.414](https://github.com/dotnet/core/blob/main/release-notes/8.0/8.0.20/8.0.20.md) ([Download](https://dotnet.microsoft.com/download/dotnet-core/8.0))
* [.NET 9.0.9 and .NET SDK 9.0.305](https://github.com/dotnet/core/blob/main/release-notes/9.0/9.0.9/9.0.9.md) ([Download](https://dotnet.microsoft.com/download/dotnet-core/9.0))


Also announced at [.NET Updates in September 2025](https://devblogs.microsoft.com/dotnet/dotnet-and-dotnet-framework-september-2025-servicing-updates/).

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.NET September 2025 Updates #368

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