{"id":"CVE-2021-27793","aliases":["EUVD-2021-14534","GHSA-j9pj-ff73-q8xm"],"status":"published","title":"ntermittent authorization failure in aaa tacacs+ with Brocade Fabric OS versions before Brocade...","description":"ntermittent authorization failure in aaa tacacs+ with Brocade Fabric OS versions before Brocade Fabric OS v9.0.1b and after 9.0.0, also in Brocade Fabric OS before Brocade Fabric OS v8.2.3a and after v8.2.0 could cause a user with a valid account to be unable to log into the switch.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00905,"percentile":0.60249,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-863"],"published":"2021-08-12T14:24:18Z","modified":"2026-06-17T03:45:27Z","products":[{"vendor":"broadcom","product":"fabric_operating_system"},{"vendor":"brocade","product":"brocade fabric os"}],"references":[{"url":"https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2021-1553","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://security.netapp.com/advisory/ntap-20210819-0001/","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-27793"},{"url":"https://github.com/advisories/GHSA-j9pj-ff73-q8xm"}],"sources":{"cve":[{"id":"CVE-2021-27793","description":"ntermittent authorization failure in aaa tacacs+ with Brocade Fabric OS versions before Brocade Fabric OS v9.0.1b and after 9.0.0, also in Brocade Fabric OS before Brocade Fabric OS v8.2.3a and after v8.2.0 could cause a user with a valid account to be unable to log into the switch.","status":"published","published":"2021-08-12T14:24:18Z","modified":"2024-08-03T21:33:15.756Z","updated_at":"2026-11-02T14:33:04.360272Z"}],"euvd":[{"id":"EUVD-2021-14534","description":"ntermittent authorization failure in aaa tacacs+ with Brocade Fabric OS versions before Brocade Fabric OS v9.0.1b and after 9.0.0, also in Brocade Fabric OS before Brocade Fabric OS v8.2.3a and after v8.2.0 could cause a user with a valid account to be unable to log into the switch.","status":"published","published":"2021-08-12T14:24:18Z","modified":"2024-08-03T21:33:15Z","updated_at":"2026-11-03T03:24:48.366655Z"}],"ghsa":[{"id":"GHSA-j9pj-ff73-q8xm","title":"ntermittent authorization failure in aaa tacacs+ with Brocade Fabric OS versions before Brocade...","description":"ntermittent authorization failure in aaa tacacs+ with Brocade Fabric OS versions before Brocade Fabric OS v9.0.1b and after 9.0.0, also in Brocade Fabric OS before Brocade Fabric OS v8.2.3a and after v8.2.0 could cause a user with a valid account to be unable to log into the switch.","status":"published","published":"2022-05-24T19:10:57Z","modified":"2023-01-30T05:01:31Z","cwes":["CWE-863"],"updated_at":"2026-11-02T14:46:25.569206Z"}],"nvd":[{"id":"CVE-2021-27793","description":"ntermittent authorization failure in aaa tacacs+ with Brocade Fabric OS versions before Brocade Fabric OS v9.0.1b and after 9.0.0, also in Brocade Fabric OS before Brocade Fabric OS v8.2.3a and after v8.2.0 could cause a user with a valid account to be unable to log into the switch.","status":"published","published":"2021-08-12T15:15:07.817Z","modified":"2026-06-17T03:45:27.93Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:06:56.943671Z"}]}}