CVE-2025-29991

—

CVSS 3.1

2.2 low

EPSS

<1%p2

Published

Apr 3, 2025 (Apr 3, 2025)

Modified

Jun 17, 2026

Description

Yubico YubiKey 5.4.1 through 5.7.3 before 5.7.4 has an incorrect FIDO CTAP PIN/UV Auth Protocol Two implementation. It uses the signature length from CTAP PIN/UV Auth Protocol One, even when CTAP PIN/UV Auth Protocol Two was chosen, resulting in a partial signature verification.

Weakness: CWE-1390
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (0.1%)

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