CVE-2026-87425: Brocade Active Support Connectivity Gateway

High severity, CVSS 7.6. EPSS: 0.1% chance of exploitation in the next 30 days.

An unauthenticated remote attacker can modify the TLS client trust store in Brocade ASCG versions before 3.5.0. By supplying an unauthorized Certificate Authority (CA) certificate to an unauthenticated management interface, the attacker can cause the system to trust unauthorized certificates, potentially enabling Man-in-the-Middle (MITM) attacks against outbound communications with managed switches and peer nodes.

Affected products

• Brocade Brocade Active Support Connectivity Gateway: before 3.5.0 (fixed in 3.5.0)

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