{"id":"CVE-2026-87681","title":"An Access Control Bypass vulnerability exists in the Role-Based Access Control (RBAC) validation engine of Brocade Fabric OS versions before 10.0.1","summary":"An Access Control Bypass vulnerability exists in the Role-Based Access Control (RBAC) validation engine of Brocade Fabric OS versions before 10.0.1. When processing certain management protocol operations, the RBAC engine incorrectly cate…","severity":"medium","cvss":6.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","cwe":["CWE-269"],"vendor":"broadcom","product":"fabric_operating_system","affected":["fabric_operating_system < 10.0.1"],"patched":["fabric_operating_system 10.0.1"],"published":"2026-10-08","updated":"2026-10-13","sourceUpdated":"2026-10-13T14:13:31.013","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-87681","references":[{"url":"https://support.broadcom.com/external/content/SecurityAdvisories/0/39075","label":"sirt@brocade.com"}],"tags":["nvd","cve.org"],"epss":0.00197,"epssPercentile":0.09342,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-08T13:39:49.969555Z"},"scores":{"nvd":6.3,"cna":7.1},"ingestedAt":"2026-10-08T01:01:40.725Z","slug":"CVE-2026-87681","body":"## Overview\n\nAn Access Control Bypass vulnerability exists in the Role-Based Access Control (RBAC) validation engine of Brocade Fabric OS versions before 10.0.1. When processing certain management protocol operations, the RBAC engine incorrectly categorizes non-standard action opcodes during permission checks. This allows authenticated users with read-only management privileges to bypass access controls and execute restricted administrative operations.\n\n## Affected\n\n- `fabric_operating_system < 10.0.1`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `fabric_operating_system 10.0.1`","depth":"sunlit","depthScore":35,"depthScoreParts":{"impact":34.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":219705,"id":"CVE-2026-87681","ts":1791901786605,"field":"cvss","old":"7.1","new":"6.3"},{"seq":219704,"id":"CVE-2026-87681","ts":1791901786605,"field":"severity","old":"high","new":"medium"}]}