[Mozilla Announce] Firefox ESR 115.38, ESR 140.13,and ESR 153.0 released

"'Pascal Chevrel' via [email protected]" <[email protected]> Tue, 21 Jul 2026 08:08:47 -0700 (PDT)
Newsgroups gmane.comp.mozilla.announce
Message-ID <[email protected]>
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We are pleased to announce that the Firefox ESR 140.13 release is now 
available for download at https://www.firefox.com/download/all/desktop-esr/.

Release notes for Firefox 140.13.0esr are available at
https://www.firefox.com/firefox/140.13.0/releasenotes/
Associated security advisories are posted at:
https://www.mozilla.org/security/advisories/mfsa2026-70/

Firefox ESR 115.38.0 is also now available for Windows 7-8.1 and macOS 
10.12-10.14 users.

Release notes for Firefox 115.38.0esr are available at
https://www.firefox.com/firefox/115.38.0/releasenotes/
Associated security advisories are posted at:
https://www.mozilla.org/security/advisories/mfsa2026-69/

Firefox ESR 153.0 is the first release from the ESR153 branch, which is 
slated to replace ESR140 on October 13, 2026. We recommend that 
organizations use this opportunity to test the new major release in their 
environment and provide any feedback ahead of the ESR140 End Of Life.

Release notes for Firefox 115.38.0esr are available at
https://www.firefox.com/en-US/firefox/153.0esr/releasenotes/
Associated security advisories are posted at:
https://www.mozilla.org/en-US/security/advisories/mfsa2026-68/

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 140.13 release is now avail=
able for download at https://www.firefox.com/download/all/desktop-esr/.<br =
/><br />Release notes for Firefox 140.13.0esr are available at<br />https:/=
/www.firefox.com/firefox/140.13.0/releasenotes/<br />Associated security ad=
visories are posted at:<br />https://www.mozilla.org/security/advisories/mf=
sa2026-70/<br /><br />Firefox ESR 115.38.0 is also now available for Window=
s 7-8.1 and macOS 10.12-10.14 users.<br /><br />Release notes for Firefox 1=
15.38.0esr are available at<br />https://www.firefox.com/firefox/115.38.0/r=
eleasenotes/<br />Associated security advisories are posted at:<br />https:=
//www.mozilla.org/security/advisories/mfsa2026-69/<br /><br />Firefox ESR 1=
53.0 is the first release from the ESR153 branch, which is slated to replac=
e ESR140 on October 13, 2026. We recommend that organizations use this oppo=
rtunity to test the new major release in their environment and provide any =
feedback ahead of the ESR140 End Of Life.<br /><br />Release notes for Fire=
fox 115.38.0esr are available at<br />https://www.firefox.com/en-US/firefox=
/153.0esr/releasenotes/<br />Associated security advisories are posted at:<=
br />https://www.mozilla.org/en-US/security/advisories/mfsa2026-68/<br /><b=
r />As always, we recommend that users keep up to date with the newest vers=
ion of Firefox ESR for the latest stability and security fixes.<br /><br />=
Thank you,<br />Pascal Chevrel<br />Firefox Release Manager<br /><br />

<p></p>

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