Microsoft’s October servicing announcement lists.NET updates dated October 13, 2026, alongside new.NET Framework security and non-security updates. The.NET releases—10.0.13, 9.0.21 and 8.0.32—include security and non-security fixes. Microsoft’s announcement links to release notes, installers, binaries and container images. Microsoft’s.NET 10 release notes list fixes for information disclosure and denial of service. BleepingComputer reported that the updates also address CVE-2026-108398, a.NET Framework security-feature bypass publicly disclosed before patching. Sources: Microsoft, BleepingComputer
NewsEditorialSource: Microsoft
Microsoft releases October security updates for .NET and .NET Framework
Why it matters
Developers and administrators should review production hosts, build environments and applications that bundle a runtime, then deploy the servicing release for their .NET branch. Container users should refresh base images, rebuild, redeploy and verify the deployed runtime; Microsoft confirmed updated .NET 10 Docker images. [3] Check the applicable update documentation for your Windows and .NET Framework versions before deployment.
Attribution
Sources
- 1Microsoft.NET and .NET Framework October 2026 servicing releases updatesSource published (UTC)
- 2BleepingComputerMicrosoft October 2026 Patch Tuesday fixes 1,411 flaws, 3 zero-daysSource published (UTC)
- 3Microsoft.NET 10.0.13 release notesSource published (UTC)
Read the original source for full details and context.