---
id: CVE-2017-20234
title: >-
  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
summary: >-
  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 ca…
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-798
published: '2026-04-03'
updated: '2026-07-21'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2017-20234'
references:
  - url: >-
      https://assets.belden.com/m/114be964b4651983/original/Security-Bulletin-MNS-6K-10K-GarrettCom-BSECV-2017-08.pdf
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/garrettcom-magnum-6k-and-10k-authentication-bypass-via-hardcoded-string
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.00455
epssPercentile: 0.38859
ingestedAt: '2026-07-21T16:51:40.785Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.