Question 1

What is the EOL Risk Score for Windows 5-sp3?

Accepted Answer

Windows 5-sp3 has an EOL Risk Score™ of 90 out of 100, placing it in the Critical risk band. The score is calculated from four factors: EOL Recency (40/40), Attack Surface (30/30), CISA KEV Exposure (20/20), and Extended Support Availability (0/10).

Question 2

Is Windows 5-sp3 still supported?

Accepted Answer

Windows 5-sp3 is no longer supported — it has passed its end of life date (April 8, 2014). No further security patches will be issued. Upgrade to a supported version or obtain extended lifecycle support.

Question 3

When does Windows 5-sp3 reach end of life?

Accepted Answer

Windows 5-sp3 reached (or will reach) end of life on April 8, 2014. After this date, no security patches or bug fixes are issued by the vendor.

Question 4

What are the security risks of running Windows 5-sp3 after end of life?

Accepted Answer

After end of life, Windows 5-sp3 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.