{"id":"CVE-2023-36435","aliases":["BIT-dotnet-2023-36435","BIT-dotnet-sdk-2023-36435","GHSA-fr44-546p-7xcp"],"url":"https://o3.security/vulnerability/CVE-2023-36435","summary":"MsQuic Remote Denial of Service Vulnerability","details":"### Impact\nThe MsQuic server will continue to leak memory until no more is available, resulting in a denial of service.\n\n### Patches\nThe following patch was made:\n\n- Fix Memory Leak from Multiple Decodes of TP - https://github.com/microsoft/msquic/commit/d364feeda0dd8b729eca6fef149c1ef98630f0cb\n\n### Workarounds\nBeyond upgrading to the patched versions, there is no other workaround.\n","published":"2023-10-10T18:15:12.680Z","modified":"2026-07-08T06:27:10.942919373Z","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":0.05518,"percentile":0.92398,"asOf":"2026-09-16"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"NuGet","name":"Microsoft.Native.Quic.MsQuic.OpenSSL","fixedVersion":"2.2.3"},{"ecosystem":"NuGet","name":"Microsoft.Native.Quic.MsQuic.Schannel","fixedVersion":"2.2.3"}],"fix":{"url":"https://github.com/microsoft/msquic/commit/d364feeda0dd8b729eca6fef149c1ef98630f0cb","label":"microsoft/msquic@d364fee"},"references":[{"type":"FIX","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36435"},{"type":"WEB","url":"https://github.com/microsoft/msquic/security/advisories/GHSA-fr44-546p-7xcp"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-36435"},{"type":"WEB","url":"https://github.com/microsoft/msquic/commit/d364feeda0dd8b729eca6fef149c1ef98630f0cb"},{"type":"PACKAGE","url":"https://github.com/microsoft/msquic"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T06:27:10.942919373Z"}}