Firefox ESR 128.3.0 released

[Dianna Smith]

We are pleased to announce that the Firefox ESR 128.3.0 release is now available for download at:

https://www.mozilla.org/firefox/organizations/all/

As always, we recommend that users keep up to date with the newest version of Firefox ESR for the latest stability and security fixes.

As was previously announced, the release of ESR 128.3 also marks the official end of support for ESR 115.x. ESR115 users on all supported operating systems will be upgraded to the 128.3.0 release shipping from the ESR128 branch.

However, we are also offering a 6-month window of extended security support for Firefox ESR 115 on Windows 7-8.1 and macOS 10.12-10.14. This extension strictly applies to users on those operating systems and only high-impact security fixes will be in scope for backporting. There will be no ongoing backports of new enterprise policies or related functionality during this period. We will re-evaluate this decision early next year and announce any decisions related to the final end-of-life for ESR 115 at that time.

Release notes for Firefox 128.3.0esr are available at:

https://www.mozilla.org/firefox/128.3.0/releasenotes/.

Associated security advisories are posted at:

https://www.mozilla.org/security/advisories/mfsa2024-47

Release notes for Firefox 115.16.0esr are available at:

https://www.mozilla.org/firefox/115.16.0/releasenotes/.

Associated security advisories are posted at:

https://www.mozilla.org/security/advisories/mfsa2024-48

Thank you,

Dianna Smith
Firefox Release Manager