Question 1

What is the EOL Risk Score for Hazelcast Platform 5.5?

Accepted Answer

Hazelcast Platform 5.5 has an EOL Risk Score™ of 35 out of 100, placing it in the Medium risk band. The score is calculated from four factors: EOL Recency (25/40), Attack Surface (10/30), CISA KEV Exposure (0/20), and Extended Support Availability (0/10).

Question 2

Is Hazelcast Platform 5.5 still supported?

Accepted Answer

Hazelcast Platform 5.5 is no longer supported — it has passed its end of life date (July 26, 2026). No further security patches will be issued. Upgrade to a supported version or obtain extended lifecycle support.

Question 3

When does Hazelcast Platform 5.5 reach end of life?

Accepted Answer

Hazelcast Platform 5.5 reached (or will reach) end of life on July 26, 2026. After this date, no security patches or bug fixes are issued by the vendor.

Question 4

What are the security risks of running Hazelcast Platform 5.5 after end of life?

Accepted Answer

After end of life, Hazelcast Platform 5.5 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.