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Critical severity9.8NVD Advisory· Published Sep 8, 2021· Updated Jun 17, 2026

CVE-2021-40818

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

3

Glewlwyd/SSO serverdescription
Glewlwyd/SSO serverllm-fuzzy
Range: <=2.5.3
Glewlwyd/glewlwydllm-fuzzy
Range: <=2.5.3

Patches

Vulnerability mechanics

References

2

github.com/babelouest/glewlwyd/commit/0efd112bb62f566877750ad62ee828bff579b4e2nvdPatchThird Party Advisory
bugs.debian.org/993867nvdIssue TrackingMailing ListThird Party Advisory

News mentions

0

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