Question 1

What is the EOL Risk Score for Firefox 115?

Accepted Answer

Firefox 115 has an EOL Risk Score™ of 35 out of 100, placing it in the Medium 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 (10/10).

Question 2

Is Firefox 115 still supported?

Accepted Answer

Firefox 115 is currently supported. End of life is scheduled for August 28, 2026. Plan your migration before that date to avoid security risk.

Question 3

When does Firefox 115 reach end of life?

Accepted Answer

Firefox 115 reached (or will reach) end of life on August 28, 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 115 after end of life?

Accepted Answer

After end of life, Firefox 115 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.