CVE-2026-87426: Brocade Active Support Connectivity Gateway 0 to before 3.5.0

Affected technology

Brocade Active Support Connectivity Gateway · 0 to before 3.5.0
Brocade

Description’s affected range: versions before 3.5.0 to enumerate the configuration details and state of managed Brocade Fabric OS (FOS) switches

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Adjacent network · No privileges required · No user interaction required

What an attacker can do

An unauthenticated network-based attacker can query specific internal management endpoints on Brocade ASCG versions before 3.5.0 to enumerate the configuration details and state of managed Brocade Fabric OS (FOS) switches. Vendor/CNA’s CVSS 4.0 assessment (base score 5.3/10) rates confidentiality impact as low; integrity and availability impact as none.