Question 1

What is the EOL Risk Score for Proxmox Backup Server 3?

Accepted Answer

Proxmox Backup Server 3 has an EOL Risk Score™ of 25 out of 100, placing it in the Low risk band. The score is calculated from four factors: EOL Recency (15/40), Attack Surface (10/30), CISA KEV Exposure (0/20), and Extended Support Availability (0/10).

Question 2

Is Proxmox Backup Server 3 still supported?

Accepted Answer

Proxmox Backup Server 3 is currently supported. End of life is scheduled for August 31, 2026. Plan your migration before that date to avoid security risk.

Question 3

When does Proxmox Backup Server 3 reach end of life?

Accepted Answer

Proxmox Backup Server 3 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 Proxmox Backup Server 3 after end of life?

Accepted Answer

After end of life, Proxmox Backup Server 3 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.