Question 1

What is the EOL Risk Score for Firefox 148?

Accepted Answer

Firefox 148 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 (30/40), Attack Surface (10/30), CISA KEV Exposure (20/20), and Extended Support Availability (10/10).

Question 2

Is Firefox 148 still supported?

Accepted Answer

Firefox 148 is no longer supported — it has passed its end of life date (March 24, 2026). No further security patches will be issued. Upgrade to a supported version or obtain extended lifecycle support.

Question 3

When does Firefox 148 reach end of life?

Accepted Answer

Firefox 148 reached (or will reach) end of life on March 24, 2026. After this date, no security patches or bug fixes are issued by the vendor.

Question 4

What are the security risks of running Firefox 148 after end of life?

Accepted Answer

After end of life, Firefox 148 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.