Question 1

What is the EOL Risk Score for Debian 11?

Accepted Answer

Debian 11 has an EOL Risk Score™ of 75 out of 100, placing it in the High risk band. The score is calculated from four factors: EOL Recency (25/40), Attack Surface (30/30), CISA KEV Exposure (20/20), and Extended Support Availability (0/10).

Question 2

Is Debian 11 still supported?

Accepted Answer

Debian 11 is no longer supported — it has passed its end of life date (August 31, 2026). No further security patches will be issued. Upgrade to a supported version or obtain extended lifecycle support.

Question 3

When does Debian 11 reach end of life?

Accepted Answer

Debian 11 reached (or will reach) end of life on August 31, 2026. After this date, no security patches or bug fixes are issued by the vendor.

Question 4

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

Accepted Answer

After end of life, Debian 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.