Question 1

What is the EOL Risk Score for iOS 11?

Accepted Answer

iOS 11 has an EOL Risk Score™ of 100 out of 100, placing it in the Critical risk band. The score is calculated from four factors: EOL Recency (40/40), Attack Surface (30/30), CISA KEV Exposure (20/20), and Extended Support Availability (10/10).

Question 2

Is iOS 11 still supported?

Accepted Answer

iOS 11 is no longer supported — it has passed its end of life date (October 8, 2018). No further security patches will be issued. Upgrade to a supported version or obtain extended lifecycle support.

Question 3

When does iOS 11 reach end of life?

Accepted Answer

iOS 11 reached (or will reach) end of life on October 8, 2018. After this date, no security patches or bug fixes are issued by the vendor.

Question 4

What are the security risks of running iOS 11 after end of life?

Accepted Answer

After end of life, iOS 11 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.