Firefox 88 can be downloaded for Windows, macOS, and Linux from Mozilla's site. Because Firefox updates in the background, most users can relaunch the browser to install the latest version. Install Firefox Extended Support Release. Firefox Extended Support Release (ESR) is an official version of Firefox developed for large organizations such as universities and businesses. Firefox ESR does not come with the latest features, but it does have the latest security and stability fixes. This article provides information about the changes in Firefox 75 that will affect developers. Firefox 75 was released on April 7, 2020. See also the accompanying hacks post — Firefox 75: Ambitions for April. Changes for web developers. Mar 10, 2020 Firefox 75 will, in the background, locally cache all trusted Web PKI Certificate Authority certificates known to Mozilla. This will improve HTTPS compatibility with misconfigured web servers. Type less, find more with Firefox’s revamped address bar. Now, just select the address bar, and a box will expand with links to your top sites. Apr 14, 2020 April 14, 2020 Starting in version 75, Firefox can be configured to use client certificates provided by the operating system on Windows and macOS.
Security Vulnerabilities fixed in Firefox 75

- Firefox 75
#CVE-2020-6821: Uninitialized memory could be read when using the WebGL copyTexSubImage method
- Reporter
- Jeff Gilbert, Kenneth Russell
- Impact
- high
Description
When reading from areas partially or fully outside the source resource with WebGL's copyTexSubImage
method, the specification requires the returned values be zero. Previously, this memory was uninitialized, leading to potentially sensitive data disclosure.
References
#CVE-2020-6822: Out of bounds write in GMPDecodeData when processing large images
- Reporter
- Deian Stefan
- Impact
- moderate
Description
On 32-bit builds, an out of bounds write could have occurred when processing an image larger than 4 GB in GMPDecodeData
. It is possible that with enough effort this could have been exploited to run arbitrary code.
References
#CVE-2020-6823: Malicious Extension could obtain auth codes from OAuth login flows
- Reporter
- Leon Visscher
- Impact
- moderate
Description
A malicious extension could have called browser.identity.launchWebAuthFlow
, controlling the redirect_uri, and through the Promise returned, obtain the Auth code and gain access to the user's account at the service provider.
References
#CVE-2020-6824: Generated passwords may be identical on the same site between separate private browsing sessions
- Reporter
- Matthew Noorenberghe
- Impact
- moderate
Description
Initially, a user opens a Private Browsing Window and generates a password for a site, then closes the Private Browsing Window but leaves Firefox open. Subsequently, if the user had opened a new Private Browsing Window, revisited the same site, and generated a new password - the generated passwords would have been identical, rather than independent.
References
#CVE-2020-6825: Memory safety bugs fixed in Firefox 75 and Firefox ESR 68.7
- Reporter
- Mozilla developers
- Impact
- high
Description
Mozilla developers and community members Tyson Smith and Christian Holler reported memory safety bugs present in Firefox 74 and Firefox ESR 68.6. 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.
References
#CVE-2020-6826: Memory safety bugs fixed in Firefox 75
- Reporter
- Mozilla developers
- Impact
- high
Description
Mozilla developers Tyson Smith, Bob Clary, and Alexandru Michis reported memory safety bugs present in Firefox 74. 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.
References
This schedule is based on the current RapidRelease plan. Future dates may change if the process changes. Code is not always released to users on the same day as the branch migration. The release to users may be a few days later, to allow for manual testing and sign-off. Thunderbird tracks the ESR schedule column per Thunderbird release info.
Calendars
This wiki page may not always have the most current information. Google chrome download on macbook. Please refer to one of the following calendars for up-to-date scheduling: Adobe crack mac 2020.
- Firefox Merge/Release Dates (ICS for Thunderbird/Lightning or your calendar app) (low noise)
- Firefox Merge/Release Full Scheduling Calendar (ICS) (highly detailed - 99.99% up to date)
Firefox 75 Position Of Tabs Bar
Future branch dates
Quarter | Soft Freeze | Merge Date | Nightly | Beta | Release Date | Release | ESR |
---|---|---|---|---|---|---|---|
Q2 2021 | 2021-05-27 | 2021-05-31 | Firefox 91 | Firefox 90 | 2021-06-01 | Firefox 89 | Firefox 78.11 |
2021-06-24 | 2021-06-28 | Firefox 92 | Firefox 91 | 2021-06-29 | Firefox 90 | Firefox 78.12 | |
Q3 2021 | 2021-07-22 | 2021-07-26 | Firefox 93 | Firefox 92 | 2021-07-27 | Firefox 91 | Firefox 78.13; 91.0 |
2021-08-19 | 2021-08-23 | Firefox 94 | Firefox 93 | 2021-08-24 | Firefox 92 | Firefox 78.14; 91.1 | |
2021-09-16 | 2021-09-20 | Firefox 95 | Firefox 94 | 2021-09-21 | Firefox 93 | Firefox 78.15; 91.2 | |
Q4 2021 | 2021-10-14 | 2021-10-18 | Firefox 96 | Firefox 95 | 2021-10-19 | Firefox 94 | Firefox 91.3 |
2021-11-11 | 2021-11-15 | Firefox 97 | Firefox 96 | 2021-11-16 | Firefox 95 | Firefox 91.4 | |
2021-12-09 | 2021-12-13 | Firefox 98 | Firefox 97 | 2021-12-14 | Firefox 96 | Firefox 91.5 | |
Q1 2022 | 2022-01-20 | 2022-01-24 | Firefox 99 | Firefox 98 | 2022-01-25 | Firefox 97 | Firefox 91.6 |
Firefox 75.0 Review
The Nightly soft freeze is typically during the week prior to merge day. During this period high-risk patches should avoid landing until after the Nightly version bump lands on mozilla-central on merge day.
Past branch dates
More details on contents of releases can be found in the release notes archive or Wikipedia: Firefox version history.
Soft Freeze | Merge Date | Central | Beta | Release Date | Release | ESR |
---|---|---|---|---|---|---|
2021-04-15 | 2021-04-19 | Firefox 90 | Firefox 89 | 2021-04-19 | Firefox 88 | Firefox 78.10 |
2021-03-18 | 2021-03-22 | Firefox 89 | Firefox 88 | 2021-03-23 | Firefox 87 | Firefox 78.9 |
2021-02-18 | 2021-02-22 | Firefox 88 | Firefox 87 | 2021-02-23 | Firefox 86 | Firefox 78.8 |
2021-01-21 | 2021-01-25 | Firefox 87 | Firefox 86 | 2021-01-26 | Firefox 85 | Firefox 78.7 |
2020-12-10 | 2020-12-14 | Firefox 86 | Firefox 85 | 2020-12-15 | Firefox 84 | Firefox 78.6 |
2020-11-12 | 2020-11-16 | Firefox 85 | Firefox 84 | 2020-11-17 | Firefox 83 | Firefox 78.5 |
2020-10-15 | 2020-10-19 | Firefox 84 | Firefox 83 | 2020-10-20 | Firefox 82 | Firefox 78.4 |
2020-09-17 | 2020-09-21 | Firefox 83 | Firefox 82 | 2020-09-22 | Firefox 81 | Firefox 78.3 |
2020-08-20 | 2020-08-24 | Firefox 82 | Firefox 81 | 2020-08-25 | Firefox 80 | Firefox 68.12; 78.2 |
2020-07-23 | 2020-07-27 | Firefox 81 | Firefox 80 | 2020-07-28 | Firefox 79 | Firefox 68.11; 78.1 |
2020-06-26 | 2020-06-29 | Firefox 80 | Firefox 79 | 2020-06-30 | Firefox 78 | Firefox 68.10; 78.0 |
2020-05-28 | 2020-06-01 | Firefox 79 | Firefox 78 | 2020-06-02 | Firefox 77 | Firefox 68.9 |
2020-04-30 | 2020-05-04 | Firefox 78 | Firefox 77 | 2020-05-05 | Firefox 76 | Firefox 68.8 |
2020-04-02 | 2020-04-06 | Firefox 77 | Firefox 76 | 2020-04-07 | Firefox 75 | Firefox 68.7 |
2020-03-05 | 2020-03-09 | Firefox 76 | Firefox 75 | 2020-03-10 | Firefox 74 | Firefox 68.6 |
2020-02-06 | 2020-02-10 | Firefox 75 | Firefox 74 | 2020-02-11 | Firefox 73 | Firefox 68.5 |
2020-01-02 | 2020-01-06 | Firefox 74 | Firefox 73 | 2020-01-07 | Firefox 72 | Firefox 68.4 |
2019-11-25 | 2019-12-02 | Firefox 73 | Firefox 72 | 2019-12-03 | Firefox 71 | Firefox 68.3 |
2019-10-14 | 2019-10-21 | Firefox 72 | Firefox 71 | 2019-10-22 | Firefox 70 | Firefox 68.2 |
2019-08-26 | 2019-09-02 | Firefox 71 | Firefox 70 | 2019-09-03 | Firefox 69 | Firefox 60.9; 68.1 |
2019-07-01 | 2019-07-08 | Firefox 70 | Firefox 69 | 2019-07-09 | Firefox 68 | Firefox 60.8; 68.0 |
2019-05-13 | 2019-05-20 | Firefox 69 | Firefox 68 | 2019-05-21 | Firefox 67 | Firefox 60.7 |
2019-03-11 | 2019-03-18 | Firefox 68 | Firefox 67 | 2019-03-19 | Firefox 66 | Firefox 60.6 |
2019-01-21 | 2019-01-28 | Firefox 67 | Firefox 66 | 2019-01-29 | Firefox 65 | Firefox 60.5 |
2018-12-03 | 2018-12-10 | Firefox 66 | Firefox 65 | 2018-12-11 | Firefox 64 | Firefox 60.4 |
2018-10-15 | 2018-10-22 | Firefox 65 | Firefox 64 | 2018-10-23 | Firefox 63 | Firefox 60.3 |
Merge Date | Central | Beta | Release Date | Release | ESR |
---|---|---|---|---|---|
2018-09-04 | Firefox 64 | Firefox 63 | 2018-09-05 | Firefox 62 | Firefox 60.2 |
2018-06-25 | Firefox 63 | Firefox 62 | 2018-06-26 | Firefox 61 | Firefox 52.9; 60.1 |
2018-05-07 | Firefox 62 | Firefox 61 | 2018-05-09 | Firefox 60 | Firefox 52.8; 60.0 |
2018-03-12 | Firefox 61 | Firefox 60 | 2018-03-13 | Firefox 59 | Firefox 52.7 |
2018-01-22 | Firefox 60 | Firefox 59 | 2018-01-23 | Firefox 58 | Firefox 52.6 |
2017-11-13 | Firefox 59 | Firefox 58 | 2017-11-14 | Firefox 57 | Firefox 52.5 |
2017-09-21 | Firefox 58 | Firefox 57 | 2017-09-28 | Firefox 56 | Firefox 52.4 |
2017-08-02 | Firefox 57 | Firefox 56 | 2017-08-08 | Firefox 55 | Firefox 52.3 |
2017-06-12 | Firefox 56 | Firefox 55 | 2017-06-13 | Firefox 54 | Firefox 52.2 |
2017-04-18 | Firefox 55 | Firefox 54 | 2017-04-19 | Firefox 53 | Firefox 45.9; 52.1 |
Merge Date | Central | Aurora | Beta | Release Date | Release | ESR |
---|---|---|---|---|---|---|
2017-03-06 | Firefox 55 | Firefox 54 | Firefox 53 | 2017-03-07 | Firefox 52 | Firefox 45.8; 52.0 |
2017-01-23 | Firefox 54 | Firefox 53 | Firefox 52 | 2017-01-24 | Firefox 51 | Firefox 45.7 |
2016-12-13 | Firefox 50.1.0 | Firefox 45.6 | ||||
2016-11-14 | Firefox 53 | Firefox 52 | Firefox 51 | 2016-11-15 | Firefox 50 | Firefox 45.5 |
2016-09-19 | Firefox 52 | Firefox 51 | Firefox 50 | 2016-09-20 | Firefox 49 | Firefox 45.4 |
2016-08-01 | Firefox 51 | Firefox 50 | Firefox 49 | 2016-08-02 | Firefox 48 | Firefox 45.3 |
2016-06-06 | Firefox 50 | Firefox 49 | Firefox 48 | 2016-06-07 | Firefox 47 | Firefox 45.2 |
2016-04-25 | Firefox 49 | Firefox 48 | Firefox 47 | 2016-04-26 | Firefox 46 | Firefox 38.8; 45.1 |
2016-03-07 | Firefox 48 | Firefox 47 | Firefox 46 | 2016-03-08 | Firefox 45 | Firefox 38.7; 45.0 |
2016-01-25 | Firefox 47 | Firefox 46 | Firefox 45 | 2016-01-26 | Firefox 44 | Firefox 38.6 |
2015-12-14 | Firefox 46 | Firefox 45 | Firefox 44 | 2015-12-15 | Firefox 43 | Firefox 38.5 |
2015-10-29 | Firefox 45 | Firefox 44 | Firefox 43 | 2015-11-03 | Firefox 42 | Firefox 38.4 |
2015-09-21 | Firefox 44 | Firefox 43 | Firefox 42 | 2015-09-22 | Firefox 41 | Firefox 38.3 |
2015-08-10 | Firefox 43 | Firefox 42 | Firefox 41 | 2015-08-11 | Firefox 40 | Firefox 38.2 |
2015-06-29 | Firefox 42 | Firefox 41 | Firefox 40 | 2015-06-30 | Firefox 39 | Firefox 31.8; 38.1 |
2015-06-02 | Firefox 38.0.5 | |||||
2015-05-11* | Firefox 41 | Firefox 40 | Firefox 39 | 2015-05-12* | Firefox 38 | Firefox 31.7; 38.0 |
2015-03-30* | Firefox 40 | Firefox 39 | Firefox 38 | 2015-03-31* | Firefox 37 | Firefox 31.6 |
2015-02-23 | Firefox 39 | Firefox 38 | Firefox 37 | 2015-02-24 | Firefox 36 | Firefox 31.5 |
2015-01-12* | Firefox 38 | Firefox 37 | Firefox 36 | 2015-01-13* | Firefox 35 | Firefox 31.4 |
2014-11-28* | Firefox 37 | Firefox 36 | Firefox 35 | 2014-12-01* | Firefox 34 | Firefox 31.3 |
2014-10-13 | Firefox 36 | Firefox 35 | Firefox 34 | 2014-10-14 | Firefox 33 | Firefox 31.2 |
2014-09-02* | Firefox 35 | Firefox 34 | Firefox 33 | 2014-09-02 | Firefox 32 | Firefox 24.8; 31.1 |
2014-07-21 | Firefox 34 | Firefox 33 | Firefox 32 | 2014-07-22 | Firefox 31 | Firefox 24.7; 31.0 |
2014-06-09 | Firefox 33 | Firefox 32 | Firefox 31 | 2014-06-10 | Firefox 30 | Firefox 24.6 |
2014-04-28 | Firefox 32 | Firefox 31 | Firefox 30 | 2014-04-29 | Firefox 29 | Firefox 24.5 |
2014-03-17 | Firefox 31 | Firefox 30 | Firefox 29 | 2014-03-18 | Firefox 28 | Firefox 24.4 |
2014-02-03* | Firefox 30 | Firefox 29 | Firefox 28 | 2014-02-04* | Firefox 27 | Firefox 24.3 |
2013-12-09 | Firefox 29 | Firefox 28 | Firefox 27 | 2013-12-10 | Firefox 26 | Firefox 24.2 |
2013-10-28 | Firefox 28 | Firefox 27 | Firefox 26 | 2013-10-29 | Firefox 25 | Firefox 17.0.10; 24.1 |
2013-09-16 | Firefox 27 | Firefox 26 | Firefox 25 | 2013-09-17 | Firefox 24 | Firefox 17.0.9; 24.0 |
2013-08-05 | Firefox 26 | Firefox 25 | Firefox 24 | 2013-08-06 | Firefox 23 | Firefox 17.0.8 |
2013-06-24 | Firefox 25 | Firefox 24 | Firefox 23 | 2013-06-25 | Firefox 22 | Firefox 17.0.7 |
2013-05-13 | Firefox 24 | Firefox 23 | Firefox 22 | 2013-05-14 | Firefox 21 | Firefox 17.0.6 |
2013-04-01 | Firefox 23 | Firefox 22 | Firefox 21 | 2013-04-02 | Firefox 20 | Firefox 17.0.5 |
2013-02-19* | Firefox 22 | Firefox 21 | Firefox 20 | 2013-02-19 | Firefox 19 | Firefox 17.0.3 |
2013-01-07* | Firefox 21 | Firefox 20 | Firefox 19 | 2013-01-08* | Firefox 18 | Firefox 10.0.12; 17.0.2 |
2012-11-19 | Firefox 20 | Firefox 19 | Firefox 18 | 2012-11-20 | Firefox 17 | Firefox 10.0.11; 17.0 |
2012-10-08 | Firefox 19 | Firefox 18 | Firefox 17 | 2012-10-09 | Firefox 16 | Firefox 10.0.8 |
2012-08-27 | Firefox 18 | Firefox 17 | Firefox 16 | 2012-08-28 | Firefox 15 | Firefox 10.0.7 |
2012-07-16 | Firefox 17 | Firefox 16 | Firefox 15 | 2012-07-17 | Firefox 14 | Firefox 10.0.6 |
2012-06-05 | Firefox 16 | Firefox 15 | Firefox 14 | 2012-06-05 | Firefox 13 | Firefox 10.0.5 |
2012-04-24 | Firefox 15 | Firefox 14 | Firefox 13 | 2012-04-24 | Firefox 12 | Firefox 10.0.4 |
2012-03-13 | Firefox 14 | Firefox 13 | Firefox 12 | 2012-03-13 | Firefox 11 | Firefox 10.0.3 |
2012-01-31 | Firefox 13 | Firefox 12 | Firefox 11 | 2012-01-31 | Firefox 10 | Firefox 10.0 |
2011-12-20 | Firefox 12 | Firefox 11 | Firefox 10 | 2011-12-20 | Firefox 9 | |
2011-11-08 | Firefox 11 | Firefox 10 | Firefox 9 | 2011-11-08 | Firefox 8 | |
2011-09-27 | Firefox 10 | Firefox 9 | Firefox 8 | 2011-09-27 | Firefox 7 | |
2011-08-16 | Firefox 9 | Firefox 8 | Firefox 7 | 2011-08-16 | Firefox 6 | |
2011-07-05 | Firefox 8 | Firefox 7 | Firefox 6 | |||
2011-06-21 | Firefox 5 | |||||
2011-05-24 | Firefox 7 | Firefox 6 | ||||
2011-05-17 | Firefox 5 | |||||
2011-04-12 | Firefox 6 | Firefox 5 |
Firefox 75 Zoom
*Some release dates and merge dates are rescheduled to avoid conflicts with holidays.
Notes:
Firefox 75
- Four week schedule starting late 2019.
- Irregular schedule targeting six to eight week intervals, adjusting for holidays, starting 2016.
- Six week schedule from 2011 to 2015 (with some dates delayed to avoid conflicts with holidays).
- Firefox 5 was on a slightly different schedule. It spent five weeks each on Aurora and Beta while later releases spent six weeks on each branch.
Firefox 75 Download
