CVE-2026-87665: Fabric OS 0 to before 10.0.1

Affected technology

Fabric OS · 0 to before 10.0.1
Brocade

Description’s affected range: versions before 10.0.1

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Adjacent network · No privileges required · No user interaction required

What an attacker can do

An unauthenticated remote attacker can exploit this vulnerability by sending a single, specifically crafted UDP packet (Port 500) containing an oversized Nonce payload. Vendor/CNA’s CVSS 4.0 assessment (base score 6.0/10) rates confidentiality impact as none; integrity impact as low; availability impact as high.