Question 1

What is the EOL Risk Score for Microsoft Edge 143?

Accepted Answer

Microsoft Edge 143 has an EOL Risk Score™ of 40 out of 100, placing it in the Medium risk band. The score is calculated from four factors: EOL Recency (30/40), Attack Surface (10/30), CISA KEV Exposure (0/20), and Extended Support Availability (0/10).

Question 2

Is Microsoft Edge 143 still supported?

Accepted Answer

Microsoft Edge 143 is no longer supported — it has passed its end of life date (January 16, 2026). No further security patches will be issued. Upgrade to a supported version or obtain extended lifecycle support.

Question 3

When does Microsoft Edge 143 reach end of life?

Accepted Answer

Microsoft Edge 143 reached (or will reach) end of life on January 16, 2026. After this date, no security patches or bug fixes are issued by the vendor.

Question 4

What are the security risks of running Microsoft Edge 143 after end of life?

Accepted Answer

After end of life, Microsoft Edge 143 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.