---
id: CVE-2026-87679
title: >-
  When Brocade Fabric OS versions before 10.0.1 processes trunk configuration
  operations, the application parses user-supplied list strings into dynamically
  allocated heap arrays without enforcing boundary checks on the maximum
  allowable n…
summary: >-
  When Brocade Fabric OS versions before 10.0.1 processes trunk configuration
  operations, the application parses user-supplied list strings into dynamically
  allocated heap arrays without enforcing boundary checks on the maximum
  allowable n…
severity: high
cvss: 8.5
cvssVector: 'CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'
cwe:
  - CWE-122
vendor: Brocade
product: Fabric OS
affected:
  - fabric_os < 10.0.1
published: '2026-10-08'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T01:16:32.313'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-87679'
references:
  - url: 'https://support.broadcom.com/external/content/SecurityAdvisories/0/39073'
    label: sirt@brocade.com
tags:
  - nvd
  - cve.org
cvssSource: cna
ingestedAt: '2026-10-08T01:01:40.726Z'
---

## Overview

When Brocade Fabric OS versions before 10.0.1 processes trunk configuration operations, the application parses user-supplied list strings into dynamically allocated heap arrays without enforcing boundary checks on the maximum allowable number of elements. An authenticated administrator can exploit this vulnerability via crafted REST API requests containing an excessive number of list delimiters, causing heap corruption that can result in service crash or arbitrary code execution.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.