CVE-2025-29991
CVSS 3.1 Score 2.2 of 10 (low)
Details
Published Apr 3, 2025
Updated: Apr 7, 2025
CWE ID 1390
Summary
CVE-2025-29991 is a vulnerability affecting Yubico YubiKey 5.4.1 to 5.7.3 versions. These devices have an incorrect implementation of the FIDO CTAP PIN/UV Auth Protocol Two. Instead of using the appropriate signature length for Protocol Two, they revert to the length used in Protocol One. This issue results in partial signature verification, potentially allowing unauthorized access. Users are advised to update their YubiKeys to the latest version, 5.7.4, to mitigate this vulnerability.
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Affected Products
- Yubikey
Affected Vendors
- Yubico