Mozilla Firefox and ESR Updates 2025

Topic

Continuation of ‘Mozilla Firefox and ESR Updates 2024’ that is now closed to replies: Mozilla Firefox and ESR 2024

Latest OFFICIAL Mozilla versions at time of posting:

Firefox 133.0.3
released on the 9th December 2024
FTP Link: https://ftp.mozilla.org/pub/firefox/releases/133.0.3/

Firefox ESR 128.5.2
released on the 12th December 2024 (Windows 10+)
FTP Link: https://ftp.mozilla.org/pub/firefox/releases/128.5.2esr/

Firefox ESR 115.18
released on the 26th November 2024
Legacy edition intended for Windows 7/ 8 and macOS 10.12-10.14
FTP Link: https://ftp.mozilla.org/pub/firefox/releases/115.18.0esr/

NOTE:
Closed to replies, as this thread is intended as an update FYI only,
Please create/ post within the following support section for discussion or troubleshooting:
https://www.askwoody.com/forums/forum/askwoody-support/questions-browsers-and-desktop-software/firefox/

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Replies

Mozilla Firefox releases due via update channels on Tuesday 7th January 2025.

Firefox 134.0
Mozilla Release Notes:
https://www.mozilla.org/en-US/firefox/134.0/releasenotes/

FTP Download link (available now):
https://ftp.mozilla.org/pub/firefox/releases/134.0/

Firefox ESR 128.6
Mozilla Release Notes:
https://www.mozilla.org/en-US/firefox/128.6.0/releasenotes/

FTP Download link: (available now)
https://ftp.mozilla.org/pub/firefox/releases/128.6.0esr/

Firefox ESR 115.19.0
Intended for Windows 7-8.1 and macOS 10.12-10.14

Mozilla Release Notes:
https://www.mozilla.org/en-US/firefox/115.19.0/releasenotes/

FTP Download link: (available now)
https://ftp.mozilla.org/pub/firefox/releases/115.19.0esr/

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Security Fixes:
https://www.mozilla.org/en-US/security/advisories/mfsa2025-01/#CVE-2025-0242

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Mozilla Firefox 134.0.1 Update

Mozilla Release Notes:
https://www.mozilla.org/en-US/firefox/134.0.1/releasenotes/

FTP Download link:
https://ftp.mozilla.org/pub/firefox/releases/134.0.1/

No updates for 115.19 or 128.6 ESR browser series.

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Abbreviated bugfix list:

Fixed UI hangs happening on YouTube and Google Docs in some situations.

Fixed a startup crash affecting some users upgrading from Firefox 133.

Fixed an issue where search engines selection menus and context menus could be broken if a user had previously reverted to an earlier version.

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Firefox 134.0.2 unscheduled Update
21st January 2025

Mozilla Release Notes:
https://www.mozilla.org/en-US/firefox/134.0.2/releasenotes/

FTP Download link:
https://ftp.mozilla.org/pub/firefox/releases/134.0.2/

Abbreviated fix list:

Fixed crash reporter not being displayed for some localized builds.

Fixed a regression in Firefox 134 where anchored links in HTML framesets pointing to local files did not work.

Fixed an issue in developer tools preventing the resending of network requests when debugging extensions

Fixed an issue where data consumption from service workers may unexpectedly halt

No updates for 115.xx or 128.x Series of the browser.

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Mozilla Firefox releases due via update channels on Tuesday 4th February 2025.

Firefox 135.0
Mozilla Release Notes:
https://www.mozilla.org/en-US/firefox/135.0/releasenotes/

FTP Download link:
https://ftp.mozilla.org/pub/firefox/releases/135.0/

Firefox 128.7esr
Mozilla Release Notes:
https://www.mozilla.org/en-US/firefox/128.7.0/releasenotes/

FTP Download link:
https://ftp.mozilla.org/pub/firefox/releases/128.7.0esr/

Firefox ESR 115.20.0
Intended for Windows 7-8.1 and macOS 10.12-10.14

Mozilla Release Notes:
https://www.mozilla.org/en-US/firefox/115.20.0/releasenotes/

FTP Download link:
https://ftp.mozilla.org/pub/firefox/releases/115.20.0esr/

Check back later to view the official release notes..

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Firefox 135.0.1 Unscheduled Release
18th February 2025

Mozilla Release Notes:
https://www.mozilla.org/en-US/firefox/135.0.1/releasenotes/

Security Advisory:
https://www.mozilla.org/en-US/security/advisories/mfsa2025-12/

Memory safety bugs present in Firefox 135. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code…

Mozilla FTP download link:
https://ftp.mozilla.org/pub/firefox/releases/135.0.1/

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Mozilla Firefox releases via update channels on Tuesday 4th March 2025.

Firefox 136.0
Mozilla Release Notes:
https://www.mozilla.org/en-US/firefox/136.0/releasenotes/

FTP Download link:
https://ftp.mozilla.org/pub/firefox/releases/136.0/

Firefox 128.8esr
Mozilla Release Notes:
https://www.mozilla.org/en-US/firefox/128.8.0/releasenotes/

FTP Download link:
https://ftp.mozilla.org/pub/firefox/releases/128.8.0esr/

Firefox ESR 115.21.0
Intended for Windows 7-8.1 and macOS 10.12-10.14

Mozilla Release Notes:
https://www.mozilla.org/en-US/firefox/115.21.0/releasenotes/

FTP Download link:
https://ftp.mozilla.org/pub/firefox/releases/115.21.0esr/

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