Windows apps · Mozilla

Mozilla Thunderbird (en-US) security updates

The latest version of Mozilla Thunderbird (en-US) is 160.0, released November 10, 2026. Patch Radar has 65 security fixes for Mozilla Thunderbird (en-US), closing 1,055 CVEs, 5 of which are being exploited. The newest security fix is Mozilla Thunderbird (en-US) 157.0, released September 30, 2026. Version 160.0 adds no new CVE fixes and includes all of them.

5 exploited CVEs
Latest version
160.0
Released Nov 10, 2026
Security fixes
65
On record in Patch Radar
CVEs
1,055
Closed by those fixes
Exploited
5
Vendor report or CISA KEV

Security fixes, newest first

PriorityFixFixed inCVEsExploitedReleased
Latest Mozilla Thunderbird (en-US) 160.0160.0 Includes every fix below Nov 10, 2026
Urgent Mozilla Thunderbird (en-US) 157.0157.0 76 Sep 30, 2026
Urgent Mozilla Thunderbird (en-US) 156.0156.0 75 Sep 15, 2026
Urgent Mozilla Thunderbird (en-US) 155.0155.0 31 Sep 1, 2026
Urgent Mozilla Thunderbird (en-US) 154.0154.0 56 Aug 18, 2026
Urgent Mozilla Thunderbird (en-US) 153.0153.0 53 Jul 21, 2026
Routine Mozilla Thunderbird (en-US) 152.0.1152.0.1 2 Jul 1, 2026
Urgent Mozilla Thunderbird (en-US) 152.0152.0 40 Jun 16, 2026
Urgent Mozilla Thunderbird (en-US) 151.0151.0 25 May 19, 2026
High Mozilla Thunderbird (en-US) 150.0.2150.0.2 3 May 8, 2026
High Mozilla Thunderbird (en-US) 150.0.1150.0.1 4 Apr 30, 2026
Urgent Mozilla Thunderbird (en-US) 150.0150.0 16 Apr 21, 2026
Urgent Mozilla Thunderbird (en-US) 149.0.2149.0.2 3 Apr 7, 2026
Urgent Mozilla Thunderbird (en-US) 149.0149.0 14 Mar 24, 2026
Urgent Mozilla Thunderbird (en-US) 148.0148.0 50 Feb 24, 2026
High Mozilla Thunderbird (en-US) 147.0.2147.0.2 1 Feb 16, 2026
Routine Mozilla Thunderbird (en-US) 147.0.1147.0.1 1 Jan 28, 2026
Urgent Mozilla Thunderbird (en-US) 147.0147.0 16 Jan 13, 2026
Urgent Mozilla Thunderbird (en-US) 146.0146.0 13 Dec 10, 2025
Urgent Mozilla Thunderbird (en-US) 144.0144.0 10 Oct 14, 2025
High Mozilla Thunderbird (en-US) 143.0143.0 10 Sep 16, 2025
Urgent Mozilla Thunderbird (en-US) 142.0142.0 7 Aug 19, 2025
Urgent Mozilla Thunderbird (en-US) 141.0141.0 53 Jul 22, 2025
High Mozilla Thunderbird (en-US) 140.0140.0 2 Jul 2, 2025
High Mozilla Thunderbird (en-US) 139.0.2139.0.2 1 Jun 10, 2025
High Mozilla Thunderbird (en-US) 139.0139.0 3 May 27, 2025
High Mozilla Thunderbird (en-US) 138.0.2138.0.2 2 May 20, 2025
High Mozilla Thunderbird (en-US) 138.0.1138.0.1 3 May 13, 2025
High Mozilla Thunderbird (en-US) 138.0138.0 11 Apr 29, 2025
High Mozilla Thunderbird (en-US) 137.0.2137.0.2 3 Apr 15, 2025
High Mozilla Thunderbird (en-US) 137.0.1137.0.1 1 Apr 4, 2025
High Mozilla Thunderbird (en-US) 137.0137.0 5 Apr 1, 2025
Patch now Mozilla Thunderbird (en-US) 136.0136.0 87 1 Mar 4, 2025
High Mozilla Thunderbird (en-US) 115.14.0115.14.0 7 Aug 6, 2024
Urgent Mozilla Thunderbird (en-US) 115.13.0115.13.0 5 Jul 16, 2024
High Mozilla Thunderbird (en-US) 115.12.1115.12.1 8 Jun 19, 2024
High Mozilla Thunderbird (en-US) 115.11.0115.11.0 6 May 15, 2024
Routine Mozilla Thunderbird (en-US) 115.10.1115.10.1 1 Apr 18, 2024
Urgent Mozilla Thunderbird (en-US) 115.10.0115.10.0 7 Apr 16, 2024
High Mozilla Thunderbird (en-US) 115.9.0115.9.0 9 Mar 19, 2024
High Mozilla Thunderbird (en-US) 115.8.1115.8.1 1 Mar 5, 2024
Patch now Mozilla Thunderbird (en-US) 115.8.0115.8.0 120 2 Feb 21, 2024
High Mozilla Thunderbird (en-US) 102.6.0102.6.0 22 Dec 12, 2022
High Mozilla Thunderbird (en-US) 102.3.0102.3.0 15 Sep 14, 2022
High Mozilla Thunderbird (en-US) 102.1.0102.1.0 4 Jul 25, 2022
High Mozilla Thunderbird (en-US) 102.0102.0 19 Jun 29, 2022
High Mozilla Thunderbird (en-US) 91.9.091.9.0 8 May 2, 2022
High Mozilla Thunderbird (en-US) 91.8.091.8.0 8 Apr 5, 2022
Patch now Mozilla Thunderbird (en-US) 91.7.091.7.0 6 2 Mar 8, 2022
High Mozilla Thunderbird (en-US) 91.6.191.6.1 1 Feb 15, 2022
High Mozilla Thunderbird (en-US) 91.6.091.6.0 8 Feb 8, 2022
High Mozilla Thunderbird (en-US) 91.5.091.5.0 14 Jan 6, 2022
Routine Mozilla Thunderbird (en-US) 91.4.191.4.1 1 Dec 16, 2021
Urgent Mozilla Thunderbird (en-US) 91.4.091.4.0 11 Dec 3, 2021
Urgent Mozilla Thunderbird (en-US) 91.3.091.3.0 10 Nov 1, 2021
High Mozilla Thunderbird (en-US) 91.2.091.2.0 6 Oct 4, 2021
High Mozilla Thunderbird (en-US) 91.1.291.1.2 2 Sep 24, 2021
High Mozilla Thunderbird (en-US) 91.0.391.0.3 9 Aug 24, 2021
High Mozilla Thunderbird (en-US) 78.12.078.12.0 3 Jul 12, 2021
Urgent Mozilla Thunderbird (en-US) 78.11.078.11.0 2 May 28, 2021
Routine Mozilla Thunderbird (en-US) 78.10.278.10.2 2 May 13, 2021
Routine Mozilla Thunderbird (en-US) 78.10.178.10.1 1 May 3, 2021
Urgent Mozilla Thunderbird (en-US) 78.10.078.10.0 46 Apr 15, 2021
High Mozilla Thunderbird (en-US) 78.4.078.4.0 5 Oct 19, 2020
High Mozilla Thunderbird (en-US) 78.2.178.2.1 3 Aug 28, 2020
High Mozilla Thunderbird (en-US) 78.1.078.1.0 8 Jul 29, 2020

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