Firefox End of Life Dates
browser
Mozilla Firefox, or simply Firefox, is a free and open-source web browser developed by the Mozilla Foundation and its subsidiary, the Mozilla Corporation.
Last updated: May 31, 2026
| Version | Released | Active support | EOL date | Until EOL | Latest | CVEs | Status |
|---|---|---|---|---|---|---|---|
| 151 | May 18, 2026 | — | No | — | 151.0.2 | — | Active |
| 150 | Apr 21, 2026 | — | May 18, 2026 | 22d ago | 150.0.3 | — | EOL |
| 149 | Mar 24, 2026 | — | Apr 21, 2026 | 49d ago | 149.0.2 | — | EOL |
| 148 | Feb 24, 2026 | — | Mar 24, 2026 | 77d ago | 148.0.2 | — | EOL |
| 147 | Jan 13, 2026 | — | Feb 24, 2026 | 105d ago | 147.0.4 | — | EOL |
| 146 | Dec 9, 2025 | — | Jan 13, 2026 | 147d ago | 146.0.1 | — | EOL |
| 145 | Nov 11, 2025 | — | Dec 9, 2025 | 182d ago | 145.0.2 | — | EOL |
| 144 | Oct 14, 2025 | — | Nov 11, 2025 | 210d ago | 144.0.2 | — | EOL |
| 143 | Sep 16, 2025 | — | Oct 14, 2025 | 238d ago | 143.0.4 | — | EOL |
| 142 | Aug 19, 2025 | — | Sep 16, 2025 | 266d ago | 142.0.1 | — | EOL |
| 141 | Jul 22, 2025 | — | Aug 19, 2025 | 294d ago | 141.0.3 | — | EOL |
| 140 LTS | Jun 24, 2025 | — | Sep 16, 2026 | in 99d | 140.11.0 | — | Active |
| 139 | May 27, 2025 | — | Jun 24, 2025 | 350d ago | 139.0.4 | — | EOL |
| 138 | Apr 29, 2025 | — | May 27, 2025 | 378d ago | 138.0.4 | — | EOL |
| 137 | Apr 1, 2025 | — | Apr 29, 2025 | 406d ago | 137.0.2 | — | EOL |
| 136 | Mar 4, 2025 | — | Apr 1, 2025 | 434d ago | 136.0.4 | — | EOL |
| 135 | Feb 4, 2025 | — | Mar 4, 2025 | 462d ago | 135.0.1 | — | EOL |
| 134 | Jan 7, 2025 | — | Feb 4, 2025 | 490d ago | 134.0.2 | — | EOL |
| 133 | Nov 26, 2024 | — | Jan 7, 2025 | 518d ago | 133.0.3 | — | EOL |
| 132 | Oct 29, 2024 | — | Nov 26, 2024 | 560d ago | 132.0.2 | — | EOL |
| 131 | Oct 1, 2024 | — | Oct 29, 2024 | 588d ago | 131.0.3 | — | EOL |
| 130 | Sep 3, 2024 | — | Oct 1, 2024 | 616d ago | 130.0.1 | — | EOL |
| 129 | Aug 6, 2024 | — | Sep 3, 2024 | 644d ago | 129.0.2 | — | EOL |
| 128 LTS | Jul 9, 2024 | — | Sep 16, 2025 | 266d ago | 128.14.0 | — | EOL |
| 127 | Jun 11, 2024 | — | Jul 9, 2024 | 700d ago | 127.0.2 | — | EOL |
| 126 | May 14, 2024 | — | Jun 11, 2024 | 728d ago | 126.0.1 | — | EOL |
| 125 | Apr 16, 2024 | — | May 14, 2024 | 756d ago | 125.0.3 | — | EOL |
| 124 | Mar 19, 2024 | — | Apr 16, 2024 | 784d ago | 124.0.2 | — | EOL |
| 123 | Feb 20, 2024 | — | Mar 19, 2024 | 812d ago | 123.0.1 | — | EOL |
| 122 | Jan 23, 2024 | — | Feb 20, 2024 | 840d ago | 122.0.1 | — | EOL |
| 121 | Dec 19, 2023 | — | Jan 23, 2024 | 868d ago | 121.0.1 | — | EOL |
| 120 | Nov 21, 2023 | — | Dec 19, 2023 | 903d ago | 120.0.1 | — | EOL |
| 119 | Oct 24, 2023 | — | Nov 21, 2023 | 931d ago | 119.0.1 | — | EOL |
| 118 | Sep 26, 2023 | — | Oct 24, 2023 | 959d ago | 118.0.2 | — | EOL |
| 117 | Aug 29, 2023 | — | Sep 26, 2023 | 987d ago | 117.0.1 | — | EOL |
| 116 | Aug 1, 2023 | — | Aug 29, 2023 | 1015d ago | 116.0.3 | — | EOL |
| 115 LTS | Jul 4, 2023 | — | Aug 28, 2026 | in 80d | 115.36.0 | — | EOL soon |
| 114 | Jun 6, 2023 | — | Jul 4, 2023 | 1071d ago | 114.0.2 | — | EOL |
| 113 | May 9, 2023 | — | Jun 6, 2023 | 1099d ago | 113.0.2 | — | EOL |
| 112 | Apr 11, 2023 | — | May 9, 2023 | 1127d ago | 112.0.2 | — | EOL |
| 111 | Mar 14, 2023 | — | Apr 11, 2023 | 1155d ago | 111.0.1 | — | EOL |
| 110 | Feb 14, 2023 | — | Mar 14, 2023 | 1183d ago | 110.0.1 | — | EOL |
| 109 | Jan 17, 2023 | — | Feb 14, 2023 | 1211d ago | 109.0.1 | — | EOL |
| 108 | Dec 13, 2022 | — | Jan 17, 2023 | 1239d ago | 108.0.2 | — | EOL |
| 107 | Nov 15, 2022 | — | Dec 13, 2022 | 1274d ago | 107.0.1 | — | EOL |
| 106 | Oct 18, 2022 | — | Nov 15, 2022 | 1302d ago | 106.0.5 | — | EOL |
| 105 | Sep 20, 2022 | — | Oct 18, 2022 | 1330d ago | 105.0.3 | — | EOL |
| 104 | Aug 23, 2022 | — | Sep 20, 2022 | 1358d ago | 104.0.2 | — | EOL |
| 103 | Jul 26, 2022 | — | Aug 23, 2022 | 1386d ago | 103.0.2 | — | EOL |
| 102 LTS | Jun 28, 2022 | — | Sep 26, 2023 | 987d ago | 102.15.1 | — | EOL |
| 91 LTS | Aug 10, 2021 | — | Sep 20, 2022 | 1358d ago | 91.13.0 | — | EOL |
| 78 LTS | Jun 30, 2020 | — | Nov 2, 2021 | 1680d ago | 78.15.0 | — | EOL |
Data sourced from endoflife.date · CVE data from NVD