CVE-2018-6440

Severity: critical (CVSS 9.1 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-12-03 · updated 2026-06-17

Description

A vulnerability in the proxy service of Brocade Fabric OS versions before 8.2.1, 8.1.2f, 8.0.2f, 7.4.2d could allow remote unauthenticated attackers to obtain sensitive information and possibly cause a denial of service attack.

Affected products

Brocade Fabric OS: from 7.4.2 before 7.4.2d; from 8.0.2 before 8.0.2f; from 8.1.2 before 8.1.2f; from 8.2.0 before 8.2.1 — fixed in 7.4.2d, 8.0.2f, 8.1.2f, 8.2.1

How to fix

Upgrade to a fixed version: Brocade Fabric OS 7.4.2d, 8.0.2f, 8.1.2f, 8.2.1. Check the vendor advisory for mitigations.

References

https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2018-733
https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2018-733

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