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Tool Directory

CVE-2025-26788

HighPublished

StrongKey FIDO Server before 4.15.1 treats a non-discoverable (namedcredential) flow as a discoverable transaction.

Published: Feb 14, 2025
Updated: Feb 15, 2025
Assigning CNA: mitre
Evidence observed: Aug 8, 2026

Primary CVSS

8.4/ 10High

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L

EPSS probability estimate

0.5%

Low · next 30 days

Percentile: 39.3%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

StrongKey FIDO Server before 4.15.1 treats a non-discoverable (namedcredential) flow as a discoverable transaction.

Sources

CVE-2025-26788PoC
Proof-of-concept exploit for CVE-2025-26788 demonstrating WebAuthn credential ID manipulation via JavaScript hooking to bypass authentication in vulnerable environments.
CVE-2025-26788PoC
Strongkey FIDO Server Authorization Bypass

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