Question 1

What is the EOL Risk Score for Drush 9?

Accepted Answer

Drush 9 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 Drush 9 still supported?

Accepted Answer

Drush 9 is no longer supported — it has passed its end of life date (May 31, 2020). No further security patches will be issued. Upgrade to a supported version or obtain extended lifecycle support.

Question 3

When does Drush 9 reach end of life?

Accepted Answer

Drush 9 reached (or will reach) end of life on May 31, 2020. After this date, no security patches or bug fixes are issued by the vendor.

Question 4

What are the security risks of running Drush 9 after end of life?

Accepted Answer

After end of life, Drush 9 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.