CVE-2021-40818
CRITICAL9.8EPSS 0.46%Published: 9/8/2021Modified: 4/28/2026
Also known as:DEBIAN-CVE-2021-40818
Description
scheme/webauthn.c in Glewlwyd SSO server through 2.5.3 has a buffer overflow during FIDO2 signature validation in webauthn registration.
Affected packages (1)
- Debian/glewlwydfrom 0, < 2.5.2-2+deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |