CVE-2026-87660

Local User Privilege Escalation in Fabric OS Diagnostic Kernel Module

Published Oct 8, 2026 CVSS 4.0 · 7 High EPSS < 1% KEV · Not listed
Description
An improper file permission and missing authorization vulnerability exists in the diagnostic kernel module subsystem of Brocade Fabric OS versions before 9.2.2d and 10.0.0 through 10.0.0a1. An unprivileged local user can invoke privileged hardware tests, force system error conditions, reset hardware blades, or disrupt storage fabric operations.

Remediation

Vendor Solution

Security update is provided in Brocade Fabric OS 9.2.2d and 10.0.1

Tracking

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Advisories

No advisories available
History
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': 7.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H'}

Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
Title Local User Privilege Escalation in Fabric OS Diagnostic Kernel Module
First Time appeared Brocade
Brocade fabric Os
Vendors & Products Brocade
Brocade fabric Os
Type Values Removed Values Added
Description An improper file permission and missing authorization vulnerability exists in the diagnostic kernel module subsystem of Brocade Fabric OS versions before 9.2.2d and 10.0.0 through 10.0.0a1. An unprivileged local user can invoke privileged hardware tests, force system error conditions, reset hardware blades, or disrupt storage fabric operations.
Weaknesses CWE-732
References
Metrics cvssV4_0

{'score': 7, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
brocade
Published
Updated
Oct 8, 2026, 5:56 PM
Reserved
Sep 8, 2026, 10:51 PM
Status
Analyzed
Published
Oct 8, 2026, 4:17 AM
Modified
Oct 14, 2026, 7:15 PM