---
id: CVE-2026-94584
title: >-
  A race condition and thread-safety vulnerability exists in the web management
  daemon of Brocade Fabric OS versions before 10.0.1
summary: >-
  A race condition and thread-safety vulnerability exists in the web management
  daemon of Brocade Fabric OS versions before 10.0.1. When handling user
  authentication requests across a multi-threaded execution pool, this race
  condition caus…
severity: low
cvss: 2.6
cvssVector: 'CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N'
cwe:
  - CWE-362
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: '2026-10-14T19:15:55.857'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-94584'
references:
  - url: 'https://support.broadcom.com/external/content/SecurityAdvisories/0/39158'
    label: sirt@brocade.com
tags:
  - nvd
  - cve.org
epss: 0.00139
epssPercentile: 0.03271
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-08T15:07:08.398255Z'
scores:
  nvd: 2.6
  cna: 2.1
ingestedAt: '2026-10-08T04:04:32.127Z'
---

## Overview

A race condition and thread-safety vulnerability exists in the web management daemon of Brocade Fabric OS versions before 10.0.1. When handling user authentication requests across a multi-threaded execution pool, this race condition causes PAM modules to process stale or incorrect client IP addresses and switch context numbers. This leads to inaccurate audit records and potential access control bypasses where AAA evaluation or Calling-Station-ID ACL policies rely on client IP attributes.

## Affected

- `fabric_operating_system < 10.0.1`

## Remediation

Upgrade past the affected range:

- `fabric_operating_system 10.0.1`