CVE-2017-20234 Belden CVE debrief

Who should care

Organizations using GarrettCom Magnum 6K and 10K managed switches should prioritize patching this vulnerability to prevent unauthorized access. This vulnerability affects operators of these switches, as well as security teams and vulnerability management teams responsible for ensuring the security of these systems.

Technical summary

The vulnerability is caused by a hardcoded string in the authentication mechanism of GarrettCom Magnum 6K and 10K managed switches. This allows attackers to bypass login controls and gain unauthorized access to administrative functions and sensitive switch configuration. The vulnerability has a CVSS score of 9.3 and is classified as CRITICAL. There are limited details available about the vulnerability's impact and affected systems.

Defensive priority

High

Recommended defensive actions

• Apply patches or updates provided by the vendor to fix the authentication bypass vulnerability.
• Implement compensating controls, such as network segmentation and access controls, to limit the attack surface.
• Monitor switch configurations and logs for suspicious activity.
• Conduct regular security audits and vulnerability assessments.
• Review and update incident response plans to include procedures for responding to potential exploitation of this vulnerability.
• Verify that affected systems are properly isolated and segmented from the rest of the network.
• Track exceptions and retest remediated assets to ensure that the vulnerability has been fully mitigated.

Evidence notes

The CVE record was published on 2026-04-03T23:17:00.087Z and was last modified on 2026-07-21T07:10:00.117Z. The NVD entry is currently Awaiting Analysis. This information is based on the NVD entry and the CVE record. The vulnerability affects GarrettCom Magnum 6K and 10K managed switches. There are limited details available about the vulnerability's impact and affected systems. Defenders should verify the official CVE record and NVD entry for the latest information.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.