CVE-2026-87426 Information disclosure in Brocade Active Support Connectivity Gateway

Medium 5.3 Published 8 Oct 2026 Updated 8 Oct 2026

Unauthenticated attackers can query internal endpoints to disclose SAN fabric topology and switch connectivity details in Brocade ASCG.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-87426?

CVE-2026-87426 is a medium-severity vulnerability in Brocade Active Support Connectivity Gateway, published on 8 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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. This results in the unauthorized disclosure of the customer's SAN fabric management topology and switch connectivity attributes.

Weakness: CWE-200

Which versions are affected by CVE-2026-87426?

It affects 1 product.

Products include Broadcom Brocade Active Support Connectivity Gateway.

How do I fix CVE-2026-87426?

No fix has been published for CVE-2026-87426 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-87426 being exploited?

There is no known exploitation of CVE-2026-87426 in the wild and no public exploit code.

Sources

Also known as GHSA-c348-g24g-jfxx.