CVE-2017-20234: Belden Garrettcom Magnum 6k And 10k Managed Switches

Critical severity, CVSS 9.8. EPSS: 0.5% chance of exploitation in the next 30 days.

GarrettCom Magnum 6K and 10K managed switches contain an authentication bypass vulnerability that allows unauthenticated attackers to gain unauthorized access by exploiting a hardcoded string in the authentication mechanism. Attackers can bypass login controls to access administrative functions and sensitive switch configuration without valid credentials.

Affected products

• Belden Garrettcom Magnum 6k And 10k Managed Switches: up to and including 4.6.0; up to and including 4.7.6

Published 2026-04-03. Last modified 2026-07-21.