Firefox: Releases, patches & end-of-life
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Lifecycle guide for Firefox from Mozilla

All releases, patches, maintenance and support periods at a glance

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📅 Last update on 2026-03-13

What is Firefox?

Automate product release and end-of-life managementMozilla Firefox, or simply Firefox, is a free and open-source web browser developed by the Mozilla Foundation and its subsidiary, the Mozilla Corporation. It uses the Gecko rendering engine to display web pages, which implements current and anticipated web standards.
 

The entire lifecycle of Firefox

The following figure shows you the visualised product life cycle of Firefox. You can see all releases with the latest patch version, the long-term support characteristics (orange flag in the green circle, the periods for version provision, maintenance and support.
Firefox (Mozilla) release, version and end-of-life information
XFirefox (Mozilla) release, version and end-of-life information
Figure: Release, patch and end-of-life cycle of product Firefox (Mozilla)
 

What is the Firefox release strategy?

The EOL date for any given Firefox release is the date of the next replacement release.

Facts and figures about Firefox

Product
Firefox
Vendor
Mozilla
Latest version
148.0.2
Number of releases
104
Number of versions
435
Number of unstable versions
0
Number of versions affected by CVE
377
Licence
MPL 2.0
Wikipedia
https://en.wikipedia.org/wiki/Firefox
 
 

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Lukas Böttcher
Lukas Böttcher
Business Development Manager
P:  +49-30-221986-51
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