{"id":"CVE-2021-40818","details":"scheme/webauthn.c in Glewlwyd SSO server through 2.5.3 has a buffer overflow during FIDO2 signature validation in webauthn registration.","modified":"2026-05-16T04:03:11.546144521Z","published":"2021-09-08T22:15:11.383Z","database_specific":{},"references":[{"type":"REPORT","url":"https://bugs.debian.org/993867"},{"type":"FIX","url":"https://github.com/babelouest/glewlwyd/commit/0efd112bb62f566877750ad62ee828bff579b4e2"}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}