CVE-2021-27792: Broadcom Fabric Operating System

High severity, CVSS 7.8. EPSS: 0.3% chance of exploitation in the next 30 days.

The request handling functions in web management interface of Brocade Fabric OS versions before v9.0.1a, v8.2.3a, and v7.4.2h do not properly handle malformed user input, resulting in a service crash. An authenticated attacker could use this weakness to cause the FOS HTTP application handler to crash, requiring a reboot.

Affected products

• Broadcom Fabric Operating System: before 7.4.2h (fixed in 7.4.2h); from 8.0.0, before 8.2.3a (fixed in 8.2.3a); from 9.0.0, before 9.0.1a (fixed in 9.0.1a)

Published 2021-08-12. Last modified 2026-06-17.