---
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: 8.6
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-321
vendor: Brocade
product: Brocade Active Support Connectivity Gateway
affected:
  - active_support_connectivity_gateway < 3.5.0
published: '2026-10-08'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T07:16:33.000'
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
cvssSource: cna
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.

## Remediation

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