CVE-2026-85790: Microsoft Security Advisory CVE-2026-85790 - .NET Information Disclosure Vulnerability

October 13, 2026 (updated October 19, 2026)

Microsoft is releasing this security advisory to provide information about a vulnerability in Microsoft.Native.Quic.MsQuic.Schannel. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.

Various vulnerabilities in MsQuic are addressed by an updated native-binary dependency update.

References

github.com/advisories/GHSA-2mxg-prvg-9jfg
github.com/dotnet/announcements/issues/470
github.com/dotnet/runtime/issues/135704
github.com/dotnet/runtime/security/advisories/GHSA-2mxg-prvg-9jfg
nvd.nist.gov/vuln/detail/CVE-2026-85790

Code Behaviors & Features

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