---
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: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-121
vendor: broadcom
product: fabric_operating_system
affected:
  - fabric_operating_system < 10.0.1
patched:
  - fabric_operating_system 10.0.1
published: '2026-10-08'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T17:27:15.040'
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
epss: 0.00481
epssPercentile: 0.41316
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-08T12:56:45.842416Z'
scores:
  nvd: 8.8
  cna: 8.6
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.

## Affected

- `fabric_operating_system < 10.0.1`

## Remediation

Upgrade past the affected range:

- `fabric_operating_system 10.0.1`