Question 1

What is the EOL Risk Score for Proxmox Mail Gateway 5?

Accepted Answer

Proxmox Mail Gateway 5 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 Proxmox Mail Gateway 5 still supported?

Accepted Answer

Proxmox Mail Gateway 5 is no longer supported — it has passed its end of life date (August 31, 2020). No further security patches will be issued. Upgrade to a supported version or obtain extended lifecycle support.

Question 3

When does Proxmox Mail Gateway 5 reach end of life?

Accepted Answer

Proxmox Mail Gateway 5 reached (or will reach) end of life on August 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 Proxmox Mail Gateway 5 after end of life?

Accepted Answer

After end of life, Proxmox Mail Gateway 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.