A stack-based buffer overflow vulnerability exists in the diagnostic execution utility of Brocade Fabric OS versions before 10.0.1. When processing command arguments for diagnostic operations, the utility tokenizes user-supplied input into an internal argument array without enforcing boundary checks on the maximum array capacity. An authenticated user with administrative access can exploit this vulnerability by supplying a crafted diagnostic command string containing an excessive number of tokenized arguments. This leads to a memory overwrite resulting in a denial of service (process crash).
History

Tue, 13 Oct 2026 17:30:00 +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': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H'}


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

Type Values Removed Values Added
Metrics ssvc

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


Thu, 08 Oct 2026 04:45:00 +0000

Type Values Removed Values Added
Title Stack-Based Buffer Overflow in Brocade Fabric OS Diagnostic Utility Causes Denial of Service
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
Description A stack-based buffer overflow vulnerability exists in the diagnostic execution utility of Brocade Fabric OS versions before 10.0.1. When processing command arguments for diagnostic operations, the utility tokenizes user-supplied input into an internal argument array without enforcing boundary checks on the maximum array capacity. An authenticated user with administrative access can exploit this vulnerability by supplying a crafted diagnostic command string containing an excessive number of tokenized arguments. This leads to a memory overwrite resulting in a denial of service (process crash).
Weaknesses CWE-121
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: brocade

Published: 2026-10-08T03:00:54.306Z

Updated: 2026-10-08T13:46:29.700Z

Reserved: 2026-09-08T22:51:12.106Z

Link: CVE-2026-87668

cve-icon Vulnrichment

Updated: 2026-10-08T13:46:24.789Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-08T03:16:36.100

Modified: 2026-10-13T17:23:22.300

Link: CVE-2026-87668

cve-icon Redhat

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