---
id: CVE-2026-87424
title: >-
  A vulnerability in the SupportLink API authentication component of Brocade
  ASCG versions prior to 3.5.0 allows an attacker to bypass authentication
  across deployments due to the use of a hard coded cryptographic key.
summary: >-
  A vulnerability in the SupportLink API authentication component of Brocade
  ASCG versions prior to 3.5.0 allows an attacker to bypass authentication
  across deployments due to the use of a hard coded cryptographic key.
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-321
vendor: broadcom
product: brocade_active_support_connectivity_gateway
affected:
  - brocade_active_support_connectivity_gateway < 3.5.0
patched:
  - brocade_active_support_connectivity_gateway 3.5.0
published: '2026-10-08'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T18:50:15.510'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-87424'
references:
  - url: 'https://support.broadcom.com/external/content/SecurityAdvisories/0/38391'
    label: sirt@brocade.com
tags:
  - nvd
  - cve.org
epss: 0.0019
epssPercentile: 0.08525
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-08T15:18:45.942341Z'
scores:
  nvd: 8.8
  cna: 8.6
ingestedAt: '2026-10-08T09:24:17.624Z'
---

## Overview

A vulnerability in the SupportLink API authentication component of Brocade ASCG versions prior to 3.5.0 allows an attacker to bypass authentication across deployments due to the use of a hard coded cryptographic key.

## Affected

- `brocade_active_support_connectivity_gateway < 3.5.0`

## Remediation

Upgrade past the affected range:

- `brocade_active_support_connectivity_gateway 3.5.0`