CVE-2025-29991

LOW

Yubico YubiKey 5.4.1-5.7.3 - Info Disclosure

Title source: llm

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.

References (1)

[Various Sources] https://www.yubico.com/support/security-advisories/ysa-2025-02/

Scores

CVSS v3 2.2

EPSS 0.0005

EPSS Percentile 15.2%

Attack Vector LOCAL

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-1390

Status published

Products (1)

Yubico/YubiKey 5.4.1 - 5.7.4

Published Apr 03, 2025

Tracked Since Feb 18, 2026