CVE-2026-87425 Security feature bypass in Brocade Active Support Connectivity Gateway

High 7.6 Published 8 Oct 2026 Updated 8 Oct 2026

Unauthenticated attackers can inject unauthorized CA certificates into the trust store, enabling Man-in-the-Middle attacks on network communications.

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-2026-87425?

CVE-2026-87425 is a high-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 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.

Weakness: CWE-295

Which versions are affected by CVE-2026-87425?

It affects 1 product.

Products include Broadcom Brocade Active Support Connectivity Gateway.

How do I fix CVE-2026-87425?

No fix has been published for CVE-2026-87425 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-87425 being exploited?

There is no known exploitation of CVE-2026-87425 in the wild and no public exploit code.

Sources

Also known as GHSA-42g7-mp3f-vxqx.