Question 1

What is the EOL Risk Score for Samsung Mobile Galaxy S21 Ultra 5G?

Accepted Answer

Samsung Mobile Galaxy S21 Ultra 5G has an EOL Risk Score™ of 70 out of 100, placing it in the High risk band. The score is calculated from four factors: EOL Recency (30/40), Attack Surface (10/30), CISA KEV Exposure (20/20), and Extended Support Availability (10/10).

Question 2

Is Samsung Mobile Galaxy S21 Ultra 5G still supported?

Accepted Answer

Samsung Mobile Galaxy S21 Ultra 5G is no longer supported — it has passed its end of life date (February 21, 2026). No further security patches will be issued. Upgrade to a supported version or obtain extended lifecycle support.

Question 3

When does Samsung Mobile Galaxy S21 Ultra 5G reach end of life?

Accepted Answer

Samsung Mobile Galaxy S21 Ultra 5G reached (or will reach) end of life on February 21, 2026. After this date, no security patches or bug fixes are issued by the vendor.

Question 4

What are the security risks of running Samsung Mobile Galaxy S21 Ultra 5G after end of life?

Accepted Answer

After end of life, Samsung Mobile Galaxy S21 Ultra 5G 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.