CVE-2026-87679: Brocade Fabric OS

High severity, CVSS 8.5. EPSS: 0.2% chance of exploitation in the next 30 days.

When Brocade Fabric OS versions before 10.0.1 processes trunk configuration operations, the application parses user-supplied list strings into dynamically allocated heap arrays without enforcing boundary checks on the maximum allowable number of elements. An authenticated administrator can exploit this vulnerability via crafted REST API requests containing an excessive number of list delimiters, causing heap corruption that can result in service crash or arbitrary code execution.

Affected products

• Brocade Fabric OS: before 10.0.1 (fixed in 10.0.1)

Published 2026-10-08. Last modified 2026-10-08.