---
id: CVE-2026-87684
title: >-
  A stack-based buffer overflow vulnerability exists in the SNMP daemon request
  handling of Brocade Fabric versions before 10.0.1
summary: >-
  A stack-based buffer overflow vulnerability exists in the SNMP daemon request
  handling of Brocade Fabric versions before 10.0.1. When processing an incoming
  SNMPv3 packet, an internal statistics gathering handler copies user-supplied
  con…
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/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: '2026-10-14'
sourceUpdated: '2026-10-14T14:46:52.753'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-87684'
references:
  - url: 'https://support.broadcom.com/external/content/SecurityAdvisories/0/39078'
    label: sirt@brocade.com
tags:
  - nvd
  - cve.org
epss: 0.00577
epssPercentile: 0.4737
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-08T15:19:07.602340Z'
scores:
  nvd: 9.8
  cna: 8.7
ingestedAt: '2026-10-08T03:03:35.550Z'
---

## Overview

A stack-based buffer overflow vulnerability exists in the SNMP daemon request handling of Brocade Fabric versions before 10.0.1. When processing an incoming SNMPv3 packet, an internal statistics gathering handler copies user-supplied context name data into a fixed-size buffer without properly validating the length of the string. A remote, unauthenticated attacker (under default configuration) can exploit this vulnerability by sending a specially crafted SNMPv3 packet, leading to memory corruption, daemon crash (Denial of Service), or potential arbitrary code execution.

## Affected

- `fabric_operating_system < 10.0.1`

## Remediation

Upgrade past the affected range:

- `fabric_operating_system 10.0.1`