Firefox End of Life Dates
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Developers rely on a web browser that can keep up with their needs, and Mozilla Firefox has been a staple in the development community since its inception. Created by the Mozilla Foundation and its subsidiary, the Mozilla Corporation, Firefox is a free and open-source web browser that has been widely adopted due to its flexibility and customizability. With a history spanning many years, Firefox has established itself as a trusted tool for developers, who appreciate its ability to handle complex web applications and provide a seamless browsing experience.
The end-of-life landscape for Firefox is constantly evolving, with new versions being released and older ones reaching their expiration date. Currently, there are 52 versions of Firefox, with 49 of them having reached their end-of-life. This leaves only 3 active versions, including the latest stable version, 115.36.0. The next version to expire will be version 115, which is scheduled to reach its end-of-life on August 28, 2026. This is a significant milestone, as it will mark the end of support for this particular version, and developers will need to ensure they have upgraded to a newer version to continue receiving security updates and patches.
Given the current security landscape, Firefox has a clean slate, with 0 CVEs tracked and 0 critical vulnerabilities reported. As a result, there is no most affected version, and the browser is not currently listed on the Known Exploited Vulnerabilities catalog. This is a testament to the browser's robust security features and the dedication of the Mozilla team to ensuring the security of its users. Despite this, developers should still remain vigilant and ensure they are running the latest version of Firefox to minimize any potential risks and take advantage of the latest security features and patches.
Last updated: Oct 23, 2026
| Version | Released | Active support | EOL date | Until EOL | Latest | CVEs | Status | Alert me |
|---|---|---|---|---|---|---|---|---|
| 158 | Oct 13, 2026 | — | Oct 27, 2026 | in 4d | 158.0.1 | — | EOL soon | |
| 157 | Sep 29, 2026 | — | Oct 13, 2026 | 10d ago | 157.0.1 | — | EOL | |
| 156 | Sep 15, 2026 | — | Sep 29, 2026 | 24d ago | 156.0.1 | — | EOL | |
| 155 | Sep 1, 2026 | — | Sep 15, 2026 | 38d ago | 155.0.1 | — | EOL | |
| 154 | Aug 18, 2026 | — | Sep 1, 2026 | 52d ago | 154.0.1 | — | EOL | |
| 153 LTS | Jul 21, 2026 | — | No | — | 153.5.1 | — | Active | |
| 152 | Jun 16, 2026 | — | Jul 21, 2026 | 94d ago | 152.0.6 | — | EOL | |
| 151 | May 18, 2026 | — | Jun 16, 2026 | 129d ago | 151.0.4 | — | EOL | |
| 150 | Apr 21, 2026 | — | May 18, 2026 | 158d ago | 150.0.3 | — | EOL | |
| 149 | Mar 24, 2026 | — | Apr 21, 2026 | 185d ago | 149.0.2 | — | EOL | |
| 148 | Feb 24, 2026 | — | Mar 24, 2026 | 213d ago | 148.0.2 | — | EOL | |
| 147 | Jan 13, 2026 | — | Feb 24, 2026 | 241d ago | 147.0.4 | — | EOL | |
| 146 | Dec 9, 2025 | — | Jan 13, 2026 | 283d ago | 146.0.1 | — | EOL | |
| 145 | Nov 11, 2025 | — | Dec 9, 2025 | 318d ago | 145.0.2 | — | EOL | |
| 144 | Oct 14, 2025 | — | Nov 11, 2025 | 346d ago | 144.0.2 | — | EOL | |
| 143 | Sep 16, 2025 | — | Oct 14, 2025 | 374d ago | 143.0.4 | — | EOL | |
| 142 | Aug 19, 2025 | — | Sep 16, 2025 | 402d ago | 142.0.1 | — | EOL | |
| 141 | Jul 22, 2025 | — | Aug 19, 2025 | 430d ago | 141.0.3 | — | EOL | |
| 140 LTS | Jun 24, 2025 | — | Sep 29, 2026 | 24d ago | 140.17.0 | — | EOL | |
| 139 | May 27, 2025 | — | Jun 24, 2025 | 486d ago | 139.0.4 | — | EOL | |
| 138 | Apr 29, 2025 | — | May 27, 2025 | 514d ago | 138.0.4 | — | EOL | |
| 137 | Apr 1, 2025 | — | Apr 29, 2025 | 542d ago | 137.0.2 | — | EOL | |
| 136 | Mar 4, 2025 | — | Apr 1, 2025 | 570d ago | 136.0.4 | — | EOL | |
| 135 | Feb 4, 2025 | — | Mar 4, 2025 | 598d ago | 135.0.1 | — | EOL | |
| 134 | Jan 7, 2025 | — | Feb 4, 2025 | 626d ago | 134.0.2 | — | EOL | |
| 133 | Nov 26, 2024 | — | Jan 7, 2025 | 654d ago | 133.0.3 | — | EOL | |
| 132 | Oct 29, 2024 | — | Nov 26, 2024 | 696d ago | 132.0.2 | — | EOL | |
| 131 | Oct 1, 2024 | — | Oct 29, 2024 | 724d ago | 131.0.3 | — | EOL | |
| 130 | Sep 3, 2024 | — | Oct 1, 2024 | 752d ago | 130.0.1 | — | EOL | |
| 129 | Aug 6, 2024 | — | Sep 3, 2024 | 780d ago | 129.0.2 | — | EOL | |
| 128 LTS | Jul 9, 2024 | — | Sep 16, 2025 | 402d ago | 128.14.0 | — | EOL | |
| 127 | Jun 11, 2024 | — | Jul 9, 2024 | 836d ago | 127.0.2 | — | EOL | |
| 126 | May 14, 2024 | — | Jun 11, 2024 | 864d ago | 126.0.1 | — | EOL | |
| 125 | Apr 16, 2024 | — | May 14, 2024 | 892d ago | 125.0.3 | — | EOL | |
| 124 | Mar 19, 2024 | — | Apr 16, 2024 | 920d ago | 124.0.2 | — | EOL | |
| 123 | Feb 20, 2024 | — | Mar 19, 2024 | 948d ago | 123.0.1 | — | EOL | |
| 122 | Jan 23, 2024 | — | Feb 20, 2024 | 976d ago | 122.0.1 | — | EOL | |
| 121 | Dec 19, 2023 | — | Jan 23, 2024 | 1004d ago | 121.0.1 | — | EOL | |
| 120 | Nov 21, 2023 | — | Dec 19, 2023 | 1039d ago | 120.0.1 | — | EOL | |
| 119 | Oct 24, 2023 | — | Nov 21, 2023 | 1067d ago | 119.0.1 | — | EOL | |
| 118 | Sep 26, 2023 | — | Oct 24, 2023 | 1095d ago | 118.0.2 | — | EOL | |
| 117 | Aug 29, 2023 | — | Sep 26, 2023 | 1123d ago | 117.0.1 | — | EOL | |
| 116 | Aug 1, 2023 | — | Aug 29, 2023 | 1151d ago | 116.0.3 | — | EOL | |
| 115 LTS | Jul 4, 2023 | — | Mar 31, 2027 | in 159d | 115.38.0 | — | Active | |
| 114 | Jun 6, 2023 | — | Jul 4, 2023 | 1207d ago | 114.0.2 | — | EOL | |
| 113 | May 9, 2023 | — | Jun 6, 2023 | 1235d ago | 113.0.2 | — | EOL | |
| 112 | Apr 11, 2023 | — | May 9, 2023 | 1263d ago | 112.0.2 | — | EOL | |
| 111 | Mar 14, 2023 | — | Apr 11, 2023 | 1291d ago | 111.0.1 | — | EOL | |
| 110 | Feb 14, 2023 | — | Mar 14, 2023 | 1319d ago | 110.0.1 | — | EOL | |
| 109 | Jan 17, 2023 | — | Feb 14, 2023 | 1347d ago | 109.0.1 | — | EOL | |
| 108 | Dec 13, 2022 | — | Jan 17, 2023 | 1375d ago | 108.0.2 | — | EOL | |
| 107 | Nov 15, 2022 | — | Dec 13, 2022 | 1410d ago | 107.0.1 | — | EOL | |
| 106 | Oct 18, 2022 | — | Nov 15, 2022 | 1438d ago | 106.0.5 | — | EOL | |
| 105 | Sep 20, 2022 | — | Oct 18, 2022 | 1466d ago | 105.0.3 | — | EOL | |
| 104 | Aug 23, 2022 | — | Sep 20, 2022 | 1494d ago | 104.0.2 | — | EOL | |
| 103 | Jul 26, 2022 | — | Aug 23, 2022 | 1522d ago | 103.0.2 | — | EOL | |
| 102 LTS | Jun 28, 2022 | — | Sep 26, 2023 | 1123d ago | 102.15.1 | — | EOL | |
| 91 LTS | Aug 10, 2021 | — | Sep 20, 2022 | 1494d ago | 91.13.0 | — | EOL | |
| 78 LTS | Jun 30, 2020 | — | Nov 2, 2021 | 1816d ago | 78.15.0 | — | EOL |
Data sourced from endoflife.date · CVE data from NVD
