{"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":"high","cvss":7.1,"cvssVector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N","cwe":["CWE-269"],"vendor":"Brocade","product":"Fabric OS","affected":["fabric_os < 10.0.1"],"published":"2026-10-08","updated":"2026-10-08","sourceUpdated":"2026-10-08T01:16:32.620","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"],"cvssSource":"cna","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## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":39.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}