{"schemaVersion":3,"id":"CVE-2021-27798","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"A vulnerability in Brocade Fabric OS versions 7.4.1b and 7.3.1d could allow local users to conduct privileged directory transversal. Brocade Fabric OS versions 7.4.1.x and 7.3.x have reached end of life. Brocade Fabric OS Users should upgrade to supported versions as described in the Product End-of-Life published report.","dates":{"published":"2022-08-05T15:24:40.000Z","modified":"2025-02-15T00:16:51.895Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":5.5,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":5.5,"severity":"medium","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00226,"percentile":0.12443,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.00226},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00226,"percentile":0.12443}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00226,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00226,"percentile":0.12443}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","description":"The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.","type":"weakness","status":"Stable","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/22.html"}],"affected":[{"vendor":"broadcom","product":"fabric_operating_system","name":"fabric operating system","label":"fabric_operating_system","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"7.3.1d","noFixRecorded":false,"fixedIn":null},{"text":"7.4.1b","noFixRecorded":false,"fixedIn":null}],"versionsText":"7.3.1d | 7.4.1b","eol":null,"hubHref":"/vendor/broadcom/fabric_operating_system"},{"vendor":"brocade","product":"brocade fabric os","name":"Brocade Fabric OS","label":"brocade fabric os","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"Brocade Fabric OS 7.4.1b, and 7.3.1d.","noFixRecorded":false,"fixedIn":null}],"versionsText":"Brocade Fabric OS 7.4.1b, and 7.3.1d.","eol":null,"hubHref":"/vendor/brocade/brocade_fabric_os"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2022-2012","label":"www.broadcom.com/support/…","hostname":"www.broadcom.com","tags":["X Refsource MISC","Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2022-08-05T15:24:40.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2025-02-15T00:16:51.895Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":22,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T16:44:06.031Z","stale":false,"partial":false}}