{"id":"CVE-2025-29991","aliases":["EUVD-2025-9570","GHSA-2rq3-x44v-xx2w"],"status":"published","title":"Yubico YubiKey 5.4.1 through 5.7.3 before 5.7.4 has an incorrect FIDO CTAP PIN/UV Auth Protocol...","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.","severity":{"version":"3.1","score":2.2,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00122,"percentile":0.02025,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-1390"],"published":"2025-04-03T00:00:00Z","modified":"2026-06-17T09:06:02Z","products":[{"vendor":"yubico","product":"yubikey"}],"references":[{"url":"https://www.yubico.com/support/security-advisories/ysa-2025-02/"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-29991"},{"url":"https://www.yubico.com/support/security-advisories/ysa-2025-02"},{"url":"https://github.com/advisories/GHSA-2rq3-x44v-xx2w"}],"sources":{"cve":[{"id":"CVE-2025-29991","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.","status":"published","published":"2025-04-03T00:00:00Z","modified":"2025-04-03T14:06:05.266Z","cvss":[{"version":"3.1","score":2.2,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N","level":"low","assessor":"cna"}],"cwes":["CWE-1390"],"updated_at":"2026-11-02T14:32:45.797843Z"}],"euvd":[{"id":"EUVD-2025-9570","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.","status":"published","published":"2025-04-03T00:00:00Z","modified":"2025-04-03T14:06:05Z","cvss":[{"version":"3.1","score":2.2,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N","level":"low"}],"updated_at":"2026-11-02T20:52:43.853284Z"}],"ghsa":[{"id":"GHSA-2rq3-x44v-xx2w","title":"Yubico YubiKey 5.4.1 through 5.7.3 before 5.7.4 has an incorrect FIDO CTAP PIN/UV Auth Protocol...","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.","status":"published","published":"2025-04-03T04:41:19Z","modified":"2025-04-03T04:41:25Z","cvss":[{"version":"3.1","score":2.2,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N","level":"low"}],"cwes":["CWE-1390"],"updated_at":"2026-11-02T15:00:46.592062Z"}],"nvd":[{"id":"CVE-2025-29991","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.","status":"published","published":"2025-04-03T03:15:17.947Z","modified":"2026-06-17T09:06:02.417Z","cvss":[{"version":"3.1","score":2.2,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N","level":"low","assessor":"secondary"}],"cwes":["CWE-1390"],"updated_at":"2026-11-02T14:10:58.094557Z"}]}}