CVE-2025-29991 – Yubico YubiKey FIDO CTAP PIN/UV Auth Protocol Two Signature Verification Vulnerability

The following table lists the changes that have been made to the
CVE-2025-29991 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by [email protected]

    Apr. 03, 2025

    Action Type Old Value New Value
    Added 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.
    Added CVSS V3.1 AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N
    Added CWE CWE-1390
    Added Reference https://www.yubico.com/support/security-advisories/ysa-2025-02/
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