CVE-2025-6391: Broadcom Brocade Active Support Connectivity Gateway

Critical severity, CVSS 9.1. EPSS: 0.2% chance of exploitation in the next 30 days.

Brocade ASCG before 3.3.0 logs JSON Web Tokens (JWT) in log files. An attacker with access to the log files can withdraw the unencrypted tokens with security implications, such as unauthorized access, session hijacking, and information disclosure.

Affected products

• Broadcom Brocade Active Support Connectivity Gateway: up to and including 3.2.0

Published 2025-07-17. Last modified 2026-06-17.