Firefox ESR 115.15.0 and ESR 128.2.0 released

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Sep 3, 2024, 2:33:02 PM9/3/24

to anno...@mozilla.org, enter...@mozilla.org

We are pleased to announce the release of two new Firefox ESR

versions today, 115.15.0 and 128.2.0.

Both are available for download from

Firefox ESR 115.15.0 is the latest in the ESR 115 branch, and 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, ESR115 users on all supported

operating systems will be upgraded to the 128.3.0 release shipping

from the ESR128 branch on October 1.

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 115.15.0esr are available at

Associated security advisories are posted at:

Firefox ESR 128.2.0 is the third release from the ESR128 branch, which

is slated to replace ESR115 on October 1. We strongly encourage

organizations to use this opportunity to test this new version in their

environment and provide feedback prior to automatic updates from the

ESR 115 channel being enabled.

Release notes for Firefox 128.2.0esr are available at

Associated security advisories are posted at:

Thank you,

Pascal Chevrel

Firefox Release Manager

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