Firefox: versions, end of support and vulnerabilities

Supported

Latest version: 159.0, released on 27/10/2026

End of support: 10/11/2026

No known vulnerability open in 159.0

Supported

Latest version: 153.6.0, released on 27/10/2026

End of support: no date known

47 known vulnerabilities open in 153.6.0

Supported

Latest version: 115.44.0, released on 27/10/2026

End of support: 31/03/2027

922 known vulnerabilities open in 115.44.0

End of support reached

Latest version: 158.0.1, released on 20/10/2026

End of support: 27/10/2026

No known vulnerability open in 158.0.1

End of support reached

Latest version: 157.0.1, released on 06/10/2026

End of support: 13/10/2026

No known vulnerability open in 157.0.1

End of support reached

Latest version: 140.17.0, released on 29/09/2026

End of support: 29/09/2026

538 known vulnerabilities open in 140.17.0

End of support reached

Latest version: 156.0.1, released on 22/09/2026

End of support: 29/09/2026

76 known vulnerabilities open in 156.0.1

End of support reached

Latest version: 155.0.1, released on 04/09/2026

End of support: 15/09/2026

148 known vulnerabilities open in 155.0.1

End of support reached

Latest version: 154.0.1, released on 25/08/2026

End of support: 01/09/2026

174 known vulnerabilities open in 154.0.1

End of support reached

Latest version: 152.0.6, released on 14/07/2026

End of support: 21/07/2026

280 known vulnerabilities open in 152.0.6

End of support reached

Latest version: 151.0.4, released on 09/06/2026

End of support: 16/06/2026

325 known vulnerabilities open in 151.0.4

End of support reached

Latest version: 150.0.3, released on 12/05/2026

End of support: 18/05/2026

359 known vulnerabilities open in 150.0.3

End of support reached

Latest version: 149.0.2, released on 07/04/2026

End of support: 21/04/2026

412 known vulnerabilities open in 149.0.2

End of support reached

Latest version: 148.0.2, released on 10/03/2026

End of support: 24/03/2026

461 known vulnerabilities open in 148.0.2

End of support reached

Latest version: 147.0.4, released on 16/02/2026

End of support: 24/02/2026

517 known vulnerabilities open in 147.0.4

End of support reached

Latest version: 146.0.1, released on 18/12/2025

End of support: 13/01/2026

536 known vulnerabilities open in 146.0.1

End of support reached

Latest version: 145.0.2, released on 25/11/2025

End of support: 09/12/2025

551 known vulnerabilities open in 145.0.2

End of support reached

Latest version: 144.0.2, released on 28/10/2025

End of support: 11/11/2025

567 known vulnerabilities open in 144.0.2

End of support reached

Latest version: 143.0.4, released on 03/10/2025

End of support: 14/10/2025

584 known vulnerabilities open in 143.0.4

End of support reached

Latest version: 142.0.1, released on 27/08/2025

End of support: 16/09/2025

595 known vulnerabilities open in 142.0.1

End of support reached

Latest version: 128.14.0, released on 19/08/2025

End of support: 16/09/2025

789 known vulnerabilities open in 128.14.0

End of support reached

Latest version: 141.0.3, released on 07/08/2025

End of support: 19/08/2025

607 known vulnerabilities open in 141.0.3

End of support reached

Latest version: 139.0.4, released on 10/06/2025

End of support: 24/06/2025

646 known vulnerabilities open in 139.0.4

End of support reached

Latest version: 138.0.4, released on 17/05/2025

End of support: 27/05/2025

658 known vulnerabilities open in 138.0.4

End of support reached

Latest version: 137.0.2, released on 15/04/2025

End of support: 29/04/2025

671 known vulnerabilities open in 137.0.2

End of support reached

Latest version: 136.0.4, released on 27/03/2025

End of support: 01/04/2025

679 known vulnerabilities open in 136.0.4

End of support reached

Latest version: 135.0.1, released on 18/02/2025

End of support: 04/03/2025

696 known vulnerabilities open in 135.0.1

End of support reached

Latest version: 134.0.2, released on 21/01/2025

End of support: 04/02/2025

710 known vulnerabilities open in 134.0.2

End of support reached

Latest version: 133.0.3, released on 10/12/2024

End of support: 07/01/2025

722 known vulnerabilities open in 133.0.3

End of support reached

Latest version: 132.0.2, released on 12/11/2024

End of support: 26/11/2024

742 known vulnerabilities open in 132.0.2

End of support reached

Latest version: 131.0.3, released on 14/10/2024

End of support: 29/10/2024

754 known vulnerabilities open in 131.0.3

End of support reached

Latest version: 130.0.1, released on 17/09/2024

End of support: 01/10/2024

769 known vulnerabilities open in 130.0.1

End of support reached

Latest version: 129.0.2, released on 20/08/2024

End of support: 03/09/2024

777 known vulnerabilities open in 129.0.2

End of support reached

Latest version: 127.0.2, released on 25/06/2024

End of support: 09/07/2024

808 known vulnerabilities open in 127.0.2

End of support reached

Latest version: 126.0.1, released on 28/05/2024

End of support: 11/06/2024

823 known vulnerabilities open in 126.0.1

End of support reached

Latest version: 125.0.3, released on 29/04/2024

End of support: 14/05/2024

841 known vulnerabilities open in 125.0.3

End of support reached

Latest version: 124.0.2, released on 02/04/2024

End of support: 16/04/2024

857 known vulnerabilities open in 124.0.2

End of support reached

Latest version: 123.0.1, released on 05/03/2024

End of support: 19/03/2024

872 known vulnerabilities open in 123.0.1

End of support reached

Latest version: 122.0.1, released on 06/02/2024

End of support: 20/02/2024

888 known vulnerabilities open in 122.0.1

End of support reached

Latest version: 121.0.1, released on 09/01/2024

End of support: 23/01/2024

903 known vulnerabilities open in 121.0.1

End of support reached

Latest version: 120.0.1, released on 30/11/2023

End of support: 19/12/2023

921 known vulnerabilities open in 120.0.1

End of support reached

Latest version: 119.0.1, released on 07/11/2023

End of support: 21/11/2023

931 known vulnerabilities open in 119.0.1

End of support reached

Latest version: 118.0.2, released on 10/10/2023

End of support: 24/10/2023

943 known vulnerabilities open in 118.0.2

End of support reached

Latest version: 117.0.1, released on 12/09/2023

End of support: 26/09/2023

952 known vulnerabilities open in 117.0.1

End of support reached

Latest version: 102.15.1, released on 12/09/2023

End of support: 26/09/2023

1138 known vulnerabilities open in 102.15.1

End of support reached

Latest version: 116.0.3, released on 16/08/2023

End of support: 29/08/2023

967 known vulnerabilities open in 116.0.3

End of support reached

Latest version: 114.0.2, released on 20/06/2023

End of support: 04/07/2023

1003 known vulnerabilities open in 114.0.2

End of support reached

Latest version: 113.0.2, released on 23/05/2023

End of support: 06/06/2023

1007 known vulnerabilities open in 113.0.2

End of support reached

Latest version: 112.0.2, released on 25/04/2023

End of support: 09/05/2023

1019 known vulnerabilities open in 112.0.2

End of support reached

Latest version: 111.0.1, released on 21/03/2023

End of support: 11/04/2023

1038 known vulnerabilities open in 111.0.1

End of support reached

Latest version: 110.0.1, released on 28/02/2023

End of support: 14/03/2023

1051 known vulnerabilities open in 110.0.1

End of support reached

Latest version: 109.0.1, released on 31/01/2023

End of support: 14/02/2023

1069 known vulnerabilities open in 109.0.1

End of support reached

Latest version: 108.0.2, released on 05/01/2023

End of support: 17/01/2023

1079 known vulnerabilities open in 108.0.2

End of support reached

Latest version: 107.0.1, released on 29/11/2022

End of support: 13/12/2022

1087 known vulnerabilities open in 107.0.1

End of support reached

Latest version: 106.0.5, released on 04/11/2022

End of support: 15/11/2022

1107 known vulnerabilities open in 106.0.5

End of support reached

Latest version: 105.0.3, released on 07/10/2022

End of support: 18/10/2022

1116 known vulnerabilities open in 105.0.3

End of support reached

Latest version: 104.0.2, released on 06/09/2022

End of support: 20/09/2022

1125 known vulnerabilities open in 104.0.2

End of support reached

Latest version: 91.13.0, released on 23/08/2022

End of support: 20/09/2022

1269 known vulnerabilities open in 91.13.0

End of support reached

Latest version: 103.0.2, released on 09/08/2022

End of support: 23/08/2022

1130 known vulnerabilities open in 103.0.2

End of support reached

Latest version: 78.15.0, released on 05/10/2021

End of support: 02/11/2021

1406 known vulnerabilities open in 78.15.0