Question 1

What is the EOL Risk Score for Cisco Meraki MS420 Series?

Accepted Answer

Cisco Meraki MS420 Series has an EOL Risk Score™ of 50 out of 100, placing it in the Medium risk band. The score is calculated from four factors: EOL Recency (40/40), Attack Surface (10/30), CISA KEV Exposure (0/20), and Extended Support Availability (0/10).

Question 2

Is Cisco Meraki MS420 Series still supported?

Accepted Answer

Cisco Meraki MS420 Series is no longer supported — it has passed its end of life date (October 31, 2023). No further security patches will be issued. Upgrade to a supported version or obtain extended lifecycle support.

Question 3

When does Cisco Meraki MS420 Series reach end of life?

Accepted Answer

Cisco Meraki MS420 Series reached (or will reach) end of life on October 31, 2023. After this date, no security patches or bug fixes are issued by the vendor.

Question 4

What are the security risks of running Cisco Meraki MS420 Series after end of life?

Accepted Answer

After end of life, Cisco Meraki MS420 Series no longer receives security patches. Any newly discovered CVEs remain unpatched indefinitely. Organizations running EOL software also face compliance violations under SOC 2, PCI DSS, HIPAA, and ISO 27001, which require use of supported software versions.