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.NET 8.0.21 and 9.0.10 servicing releases are now available with security fixes for three CVEs (CVE-2025-55315, CVE-2025-55247, CVE-2025-21176) and non-security improvements. The October 2025 updates also include .NET Framework security and non-security patches. Updates are available for download with release notes, container images, and Linux installation guides provided for both versions.

.NET and .NET Framework October 2025 servicing releases updates

.NET Framework October 2025 Updates Copy link