[Mozilla Announce] Firefox ESR 140.9 released

"'Pascal Chevrel' via [email protected]" <[email protected]> Tue, 24 Mar 2026 07:29:47 -0700 (PDT)
Newsgroups gmane.comp.mozilla.announce
Message-ID <[email protected]>
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We are pleased to announce that the Firefox ESR 140.9 release is now
available for download at https://www.firefox.com/download/all/desktop-esr/.

Release notes for Firefox 140.9.0esr are available at
https://www.firefox.com/firefox/140.9.0/releasenotes/.
Associated security advisories are posted at:
https://www.mozilla.org/security/advisories/mfsa2026-22/

Firefox ESR 115.34.0 is also now available for Windows 7-8.1 and macOS
10.12-10.14 users per the previously-announced window of extended security
support for that release.

Release notes for Firefox 115.34.0esr are available at
https://www.firefox.com/firefox/115.34.0/releasenotes/.
Associated security advisories are posted at:
https://www.mozilla.org/security/advisories/mfsa2026-21/

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

Thank you,
Pascal Chevrel
Firefox Release Manager

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We are pleased to announce that the Firefox ESR 140.9 release is now<br />a=
vailable for download at https://www.firefox.com/download/all/desktop-esr/.=
<br /><br />Release notes for Firefox 140.9.0esr are available at<br />http=
s://www.firefox.com/firefox/140.9.0/releasenotes/.<br />Associated security=
 advisories are posted at:<br />https://www.mozilla.org/security/advisories=
/mfsa2026-22/<br /><br />Firefox ESR 115.34.0 is also now available for Win=
dows 7-8.1 and macOS<br />10.12-10.14 users per the previously-announced wi=
ndow of extended security<br />support for that release.<br /><br />Release=
 notes for Firefox 115.34.0esr are available at<br />https://www.firefox.co=
m/firefox/115.34.0/releasenotes/.<br />Associated security advisories are p=
osted at:<br />https://www.mozilla.org/security/advisories/mfsa2026-21/<br =
/><br />As always, we recommend that users keep up to date with the newest =
version of<br />Firefox ESR for the latest stability and security fixes.<br=
 /><br />Thank you,<br />Pascal Chevrel<br />Firefox Release Manager

<p></p>

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