CVE-2026-85490 Path traversal in Brocade Active Support Connectivity Gateway

High 7.7 Published 8 Oct 2026 Updated 8 Oct 2026

Unauthenticated attackers can exploit path traversal in Brocade ASCG to write arbitrary files and achieve remote code execution.

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-2026-85490?

CVE-2026-85490 is a high-severity path traversal 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

When Brocade ASCG before 3.5.0 processes support bundle archives ingested from remote compromised endpoints, the application fails to sanitize path traversal sequences contained within archive entries prior to extraction. An unauthenticated remote attacker capable of sending or intercepting ingested archive files can leverage this flaw to write arbitrary files to restricted locations on the underlying host, potentially leading to remote code execution.

Weakness: CWE-22

Which versions are affected by CVE-2026-85490?

It affects 1 product.

Products include Broadcom Brocade Active Support Connectivity Gateway.

How do I fix CVE-2026-85490?

No fix has been published for CVE-2026-85490 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2026-85490 being exploited?

There is no known exploitation of CVE-2026-85490 in the wild and no public exploit code.

Sources

Also known as GHSA-c8j3-fx4p-22x7.