CVE-2018-6439 Privilege escalation in Brocade Fabric OS

What is CVE-2018-6439?

CVE-2018-6439 is a high-severity vulnerability in Broadcom Fabric Operating System, published on 3 Dec 2018. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A Vulnerability in the configdownload command of Brocade Fabric OS command line interface (CLI) versions before 8.2.1, 8.1.2f, 8.0.2f, 7.4.2d could allow a local attacker to escape the restricted shell and, gain root access.

Which versions are affected by CVE-2018-6439?

It affects 1 product.

Products include Broadcom Fabric Operating System.

How do I fix CVE-2018-6439?

No fix has been published for CVE-2018-6439 yet. Limit exposure of the affected software until one is available.

Is CVE-2018-6439 being exploited?

There is no known exploitation of CVE-2018-6439 in the wild and no public exploit code.

Other vulnerabilities in Broadcom Fabric Operating System

• CVE-2025-1976 Broadcom Brocade Fabric OS Code Injection Exploited High 8.6
• CVE-2021-22555 Linux Kernel Heap Out-of-Bounds Write Exploited High 8.3
• CVE-2022-33186 Command injection in Brocade Fabric OS Critical 9.8
• CVE-2021-27797 Hardcoded credentials in Brocade Fabric OS Critical 9.8
• CVE-2020-15371 Code injection in Brocade Fabric OS Critical 9.8

All Broadcom Fabric Operating System vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-mc2c-rhc8-mqm9.