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 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.
History

Tue, 13 Oct 2026 14:30:00 +0000

Type Values Removed Values Added
First Time appeared Broadcom
Broadcom fabric Operating System
CPEs cpe:2.3:o:broadcom:fabric_operating_system:*:*:*:*:*:*:*:*
Vendors & Products Broadcom
Broadcom fabric Operating System
Metrics cvssV3_1

{'score': 6.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L'}


Thu, 08 Oct 2026 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 08 Oct 2026 04:00:00 +0000

Type Values Removed Values Added
First Time appeared Brocade
Brocade fabric Os
Vendors & Products Brocade
Brocade fabric Os

Thu, 08 Oct 2026 03:15:00 +0000

Type Values Removed Values Added
Title RBAC Permission Misclassification Enabling Privilege Escalation

Thu, 08 Oct 2026 01:15:00 +0000

Type Values Removed Values Added
Description 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 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.
Weaknesses CWE-269
References
Metrics cvssV4_0

{'score': 7.1, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: brocade

Published: 2026-10-08T00:57:36.385Z

Updated: 2026-10-08T13:41:19.896Z

Reserved: 2026-09-08T22:51:12.186Z

Link: CVE-2026-87681

cve-icon Vulnrichment

Updated: 2026-10-08T13:41:08.885Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-08T01:16:32.620

Modified: 2026-10-13T14:13:31.013

Link: CVE-2026-87681

cve-icon Redhat

No data.