Firefox 143.0.3 is now available

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Ryan VanderMeulen

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Sep 30, 2025, 10:04:21 AM (yesterday) Sep 30
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Firefox 143.0.3 is now available as a free download for Windows, macOS, and
GNU/Linux from https://www.firefox.com/

We recommend that users keep up to date with the newest version of Firefox
for the latest features and fixes.

The release notes are available at:
https://www.firefox.com/firefox/143.0.3/releasenotes/

Thank you,
Ryan VanderMeulen
Firefox Release Manager
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