CVE-2026-87686: CWE-290: Authentication Bypass by Spoofing in Brocade Fabric OS
Description
An authentication and access control bypass vulnerability exists in the web server management interface of Brocade Fabric OS versions before 10.0.1. The web dispatcher routine evaluates internal management VLAN trust decisions using the client-supplied HTTP host header instead of the actual socket transport layer source IP address. Successful exploitation allows the attacker to bypass IP-filtering access control lists (ACLs) and obtain sensitive device metadata (such as model, serial number, hardware revision, and firmware version) without authentication.
CVSS v4.0
Score 5.3medium
Affected software
Brocade
Fabric OS
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- brocade
- Date Reserved
- 2026-09-08T22:51:12.186Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ac704982cdf04f656d7a12f
Added to database: 10/08/2026, 02:48:56 UTC
Last updated: 10/08/2026, 02:48:56 UTC
Views: 1
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