{"id":"CVE-2023-38171","aliases":["BIT-dotnet-2023-38171","BIT-dotnet-sdk-2023-38171","GHSA-xh5m-8qqp-c5x7"],"url":"https://o3.security/vulnerability/CVE-2023-38171","summary":"Remote Denial of Service Vulnerability in Microsoft.Native.Quic.MsQuic.Schannel","details":"Microsoft QUIC Denial of Service Vulnerability","published":"2023-10-10T18:15:18.087Z","modified":"2026-07-08T06:28:57.683339952Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":{"score":0.69706,"percentile":0.99334,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"NuGet","name":"Microsoft.Native.Quic.MsQuic.Schannel","fixedVersion":"2.2.3"},{"ecosystem":"NuGet","name":"Microsoft.Native.Quic.MsQuic.OpenSSL","fixedVersion":"2.2.3"}],"fix":null,"references":[{"type":"FIX","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-38171"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T06:28:57.683339952Z"}}