{"id":"CVE-2023-21538","aliases":["BIT-dotnet-2023-21538","BIT-dotnet-sdk-2023-21538","BIT-powershell-2023-21538","GHSA-8f7f-vqg5-jrv9"],"url":"https://o3.security/vulnerability/CVE-2023-21538","summary":".NET Denial of Service Vulnerability","details":".NET Denial of Service Vulnerability","published":"2023-01-10T22:15:14.837Z","modified":"2026-07-08T07:34:16.724240920Z","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":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.linux-arm","fixedVersion":"6.0.13"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.linux-arm64","fixedVersion":"6.0.13"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.linux-musl-arm","fixedVersion":"6.0.13"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.linux-musl-arm64","fixedVersion":"6.0.13"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.linux-musl-x64","fixedVersion":"6.0.13"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.linux-x64","fixedVersion":"6.0.13"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.osx-arm64","fixedVersion":"6.0.13"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.osx-x64","fixedVersion":"6.0.13"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.win-arm","fixedVersion":"6.0.13"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.win-arm64","fixedVersion":"6.0.13"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.win-x64","fixedVersion":"6.0.13"},{"ecosystem":"NuGet","name":"Microsoft.NETCore.App.Runtime.win-x86","fixedVersion":"6.0.13"}],"fix":null,"references":[{"type":"WEB","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21538"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T07:34:16.724240920Z"}}