CVE-2026-87664: Brocade Fabric OS

High severity, CVSS 8.5. EPSS: 0.1% chance of exploitation in the next 30 days.

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.

Affected products

• Brocade Fabric OS: before 9.2.2d (fixed in 9.2.2d); from 10.0.0, up to and including 10.0.0a1

Published 2026-10-08. Last modified 2026-10-09.