Question 1

What is the EOL Risk Score for Microsoft Exchange 5.0 SP2?

Accepted Answer

Microsoft Exchange 5.0 SP2 has an EOL Risk Score™ of 70 out of 100, placing it in the High risk band. The score is calculated from four factors: EOL Recency (40/40), Attack Surface (10/30), CISA KEV Exposure (20/20), and Extended Support Availability (0/10).

Question 2

Is Microsoft Exchange 5.0 SP2 still supported?

Accepted Answer

Microsoft Exchange 5.0 SP2 is no longer supported — it has passed its end of life date (January 10, 2006). No further security patches will be issued. Upgrade to a supported version or obtain extended lifecycle support.

Question 3

When does Microsoft Exchange 5.0 SP2 reach end of life?

Accepted Answer

Microsoft Exchange 5.0 SP2 reached (or will reach) end of life on January 10, 2006. After this date, no security patches or bug fixes are issued by the vendor.

Question 4

What are the security risks of running Microsoft Exchange 5.0 SP2 after end of life?

Accepted Answer

After end of life, Microsoft Exchange 5.0 SP2 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.