---
id: CVE-2026-87683
title: >-
  Multiple stack-based buffer overflow vulnerabilities exist in the REST API
  management component of Brocade Fabric OS versions prior to 10.0.1
summary: >-
  Multiple stack-based buffer overflow vulnerabilities exist in the REST API
  management component of Brocade Fabric OS versions prior to 10.0.1. When
  processing API request payloads (such as device configuration attributes or
  port mapping …
severity: high
cvss: 8.6
cvssVector: 'CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'
cwe:
  - CWE-121
vendor: Brocade
product: Fabric OS
affected:
  - fabric_os < 10.0.1
published: '2026-10-08'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T02:16:54.563'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-87683'
references:
  - url: 'https://support.broadcom.com/external/content/SecurityAdvisories/0/39077'
    label: sirt@brocade.com
tags:
  - nvd
  - cve.org
cvssSource: cna
ingestedAt: '2026-10-08T02:02:29.011Z'
---

## Overview

Multiple stack-based buffer overflow vulnerabilities exist in the REST API management component of Brocade Fabric OS versions prior to 10.0.1. When processing API request payloads (such as device configuration attributes or port mapping requests) the REST API service fails to properly validate incoming array counts and string lengths against internal buffer capacities. An authenticated attacker with REST API access can transmit crafted, oversized request parameters to induce memory corruption on the execution stack. This may result in a denial-of-service condition (daemon crash) or potential arbitrary code execution within the management process context.

## Remediation

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