{"id":"CVE-2021-47664","aliases":["EUVD-2025-12117","GHSA-547h-g7h3-f28q"],"status":"published","title":"Enumeration of valid user names","description":"Due to improper authentication mechanism an unauthenticated remote attacker can enumerate valid usernames.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00414,"percentile":0.36083,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-203"],"published":"2025-04-24T09:25:39Z","modified":"2026-06-17T04:18:16Z","products":[{"vendor":"franka robotics","product":"franka emika robot"}],"references":[{"url":"https://www.sciencedirect.com/science/article/pii/S2351978921001657"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-47664"},{"url":"https://github.com/advisories/GHSA-547h-g7h3-f28q"}],"sources":{"cve":[{"id":"CVE-2021-47664","title":"Enumeration of valid user names","description":"Due to improper authentication mechanism an unauthenticated remote attacker can enumerate valid usernames.","status":"published","published":"2025-04-24T09:25:39.181Z","modified":"2025-04-24T15:22:17Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-203"],"updated_at":"2026-11-02T14:32:56.689433Z"}],"euvd":[{"id":"EUVD-2025-12117","description":"Due to improper authentication mechanism an unauthenticated remote attacker can enumerate valid usernames.","status":"published","published":"2025-04-24T09:25:39Z","modified":"2025-04-24T15:22:17Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T20:52:04.118749Z"}],"ghsa":[{"id":"GHSA-547h-g7h3-f28q","title":"Due to improper authentication mechanism an unauthenticated remote attacker can enumerate valid...","description":"Due to improper authentication mechanism an unauthenticated remote attacker can enumerate valid usernames.","status":"published","published":"2025-04-24T12:31:28Z","modified":"2025-04-24T12:31:34Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-203"],"updated_at":"2026-11-02T15:02:00.72042Z"}],"nvd":[{"id":"CVE-2021-47664","description":"Due to improper authentication mechanism an unauthenticated remote attacker can enumerate valid usernames.","status":"published","published":"2025-04-24T10:15:16.88Z","modified":"2026-06-17T04:18:16.737Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-203"],"updated_at":"2026-11-02T14:07:09.005706Z"}]}}