Buffer Overflow vulnerability exists in the Brocade Fabric OS WebTools management (CVE-2026-94587)

Brocade Directors

5 more products

39136

06 October 2026

06 October 2026

CLOSED

MEDIUM

6.9 Medium - CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N

CVE-2026-94587

Brocade Security Advisory ID

BSA-2026-3962

Component

Fabric OS WebEMComponent name

CWE

CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

 

 

Summary:

A buffer overflow vulnerability exists in the WebTools administrative interface handling configuration download or file transfer operations of Brocade Fabric OS versions before 9.2.2d and 10.0.0 through 10.0.0a1. An authenticated user with permissions to perform configuration downloads using remote server profiles can overflow stack buffers causing a crash of the weblinker daemon. 

Products Affected

  • Brocade Fabric OS versions before 9.2.2d and 10.0.0 through 10.0.0a1

Products Not Affected

  • Brocade SANnav is not affected by this vulnerability
    [VEX Justification: Component_not_present]
  • Brocade ASCG is not affected by this vulnerability
    [VEX Justification: Component_not_present]

Solution

  • A security update is provided in Brocade Fabric OS 9.2.2d and 10.0.1

Note: This is a Frontier AI discovered vulnerability.

Revision History

Version

Change

Date

1.0

Initial Publication

10/06/2026

 

Disclaimer

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