Question 1

What is the EOL Risk Score for Container-Optimized OS cos-121?

Accepted Answer

Container-Optimized OS cos-121 has an EOL Risk Score™ of 10 out of 100, placing it in the Low risk band. The score is calculated from four factors: EOL Recency (0/40), Attack Surface (10/30), CISA KEV Exposure (0/20), and Extended Support Availability (0/10).

Question 2

Is Container-Optimized OS cos-121 still supported?

Accepted Answer

Container-Optimized OS cos-121 is currently supported. End of life is scheduled for March 1, 2027. Plan your migration before that date to avoid security risk.

Question 3

When does Container-Optimized OS cos-121 reach end of life?

Accepted Answer

Container-Optimized OS cos-121 reached (or will reach) end of life on March 1, 2027. After this date, no security patches or bug fixes are issued by the vendor.

Question 4

What are the security risks of running Container-Optimized OS cos-121 after end of life?

Accepted Answer

After end of life, Container-Optimized OS cos-121 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.