What is CVE-2017-20234?

CVE-2017-20234 is a critical-severity vulnerability in Belden Garrettcom Magnum 6k And 10k Managed Switches, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2026-04-03.

How severe is CVE-2017-20234?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Belden Garrettcom Magnum 6k And 10k Managed Switches

CVE-2017-20234

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…

EPSS: 0.000 (3.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Belden Garrettcom Magnum 6k And 10k Managed Switches — versions 4.7.7, 0

Weakness classification (CWE)

CWE-798 — Use of Hard-coded Credentials

References

assets.belden.com/m/114be964b4651983/original/Security-Bulletin-MNS-6K-10K-Garr… (vendor-advisory)
www.vulncheck.com/advisories/garrettcom-magnum-6k-and-10k-authentication-bypass… (third-party-advisory)

Frequently asked questions

What is CVE-2017-20234?: CVE-2017-20234 is a critical-severity vulnerability in Belden Garrettcom Magnum 6k And 10k Managed Switches, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2026-04-03.
How severe is CVE-2017-20234?: Critical severity. CVSS v3 base score is 9.8 out of 10.