---
id: CVE-2026-87664
title: >-
  A session context forgery vulnerability exists in the web management daemon of
  Brocade Fabric OS versions 9.2.2d and 10.0.0 through 10.0.0a1
summary: >-
  A session context forgery vulnerability exists in the web management daemon of
  Brocade Fabric OS versions 9.2.2d and 10.0.0 through 10.0.0a1. When processing
  local inter-process communication (IPC) storage callbacks, the service accepts
  …
severity: high
cvss: 8.5
cvssVector: 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'
cwe:
  - CWE-306
vendor: Brocade
product: Fabric OS
affected:
  - fabric_os < 9.2.2d
  - fabric_os >= 10.0.0 <= 10.0.0a1
published: '2026-10-08'
updated: '2026-10-09'
sourceUpdated: '2026-10-09T04:18:13.470'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-87664'
references:
  - url: 'https://support.broadcom.com/external/content/SecurityAdvisories/0/39164'
    label: sirt@brocade.com
tags:
  - nvd
  - cve.org
epss: 0.00123
epssPercentile: 0.01838
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-08T15:18:57.962028Z'
cvssSource: cna
ingestedAt: '2026-10-08T05:05:36.681Z'
---

## Overview

A session context forgery vulnerability exists in the web management daemon of Brocade Fabric OS versions 9.2.2d and 10.0.0 through 10.0.0a1. When processing local inter-process communication (IPC) storage callbacks, the service accepts and registers session structures including administrative role permissions, user identifiers, and authorization flags—without verifying the identity or authenticity of the sending process. An attacker can obtain elevated administrative privileges on the web management interface without legitimate authentication.

## Remediation

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