# Mozilla Thunderbird (ca) security updates The latest version of Mozilla Thunderbird (ca) is 159.0, released October 27, 2026. Patch Radar has 40 security fixes for Mozilla Thunderbird (ca), closing 721 CVEs, 1 of which is being exploited. The newest security fix is Mozilla Thunderbird (ca) 157.0, released September 30, 2026. Version 159.0 adds no new CVE fixes and includes all of them. - Web page: https://patchblox.com/security/product/windows-app/mozilla-thunderbird-ca - Platform: Windows apps - Vendor: Mozilla - Latest version: 159.0 (Oct 27, 2026) - Supported: yes ## Security fixes, newest first | Fix | Released | Fixed in | Priority | CVEs | Exploited | |---|---|---|---|---:|---:| | Mozilla Thunderbird (ca) 159.0 (latest, includes every fix below) | Oct 27, 2026 | 159.0 | | | | | [Mozilla Thunderbird (ca) 157.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-157.0.md) | Sep 30, 2026 | 157.0 | Urgent | 76 | 0 | | [Mozilla Thunderbird (ca) 156.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-156.0.md) | Sep 15, 2026 | 156.0 | Urgent | 75 | 0 | | [Mozilla Thunderbird (ca) 155.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-155.0.md) | Sep 1, 2026 | 155.0 | Urgent | 31 | 0 | | [Mozilla Thunderbird (ca) 154.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-154.0.md) | Aug 18, 2026 | 154.0 | Urgent | 56 | 0 | | [Mozilla Thunderbird (ca) 153.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-153.0.md) | Jul 21, 2026 | 153.0 | Urgent | 53 | 0 | | [Mozilla Thunderbird (ca) 152.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-152.0.1.md) | Jul 1, 2026 | 152.0.1 | Routine | 2 | 0 | | [Mozilla Thunderbird (ca) 152.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-152.0.md) | Jun 16, 2026 | 152.0 | Urgent | 40 | 0 | | [Mozilla Thunderbird (ca) 151.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-151.0.md) | May 19, 2026 | 151.0 | Urgent | 25 | 0 | | [Mozilla Thunderbird (ca) 150.0.2](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-150.0.2.md) | May 8, 2026 | 150.0.2 | High | 3 | 0 | | [Mozilla Thunderbird (ca) 150.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-150.0.1.md) | Apr 30, 2026 | 150.0.1 | High | 4 | 0 | | [Mozilla Thunderbird (ca) 150.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-150.0.md) | Apr 21, 2026 | 150.0 | Urgent | 16 | 0 | | [Mozilla Thunderbird (ca) 149.0.2](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-149.0.2.md) | Apr 7, 2026 | 149.0.2 | Urgent | 3 | 0 | | [Mozilla Thunderbird (ca) 149.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-149.0.md) | Mar 24, 2026 | 149.0 | Urgent | 14 | 0 | | [Mozilla Thunderbird (ca) 148.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-148.0.md) | Feb 24, 2026 | 148.0 | Urgent | 50 | 0 | | [Mozilla Thunderbird (ca) 147.0.2](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-147.0.2.md) | Feb 16, 2026 | 147.0.2 | High | 1 | 0 | | [Mozilla Thunderbird (ca) 147.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-147.0.1.md) | Jan 28, 2026 | 147.0.1 | Routine | 1 | 0 | | [Mozilla Thunderbird (ca) 147.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-147.0.md) | Jan 13, 2026 | 147.0 | Urgent | 16 | 0 | | [Mozilla Thunderbird (ca) 146.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-146.0.md) | Dec 10, 2025 | 146.0 | Urgent | 13 | 0 | | [Mozilla Thunderbird (ca) 144.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-144.0.md) | Oct 14, 2025 | 144.0 | Urgent | 10 | 0 | | [Mozilla Thunderbird (ca) 143.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-143.0.md) | Sep 16, 2025 | 143.0 | High | 10 | 0 | | [Mozilla Thunderbird (ca) 142.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-142.0.md) | Aug 19, 2025 | 142.0 | Urgent | 7 | 0 | | [Mozilla Thunderbird (ca) 141.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-141.0.md) | Jul 22, 2025 | 141.0 | Urgent | 53 | 0 | | [Mozilla Thunderbird (ca) 140.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-140.0.md) | Jul 2, 2025 | 140.0 | High | 2 | 0 | | [Mozilla Thunderbird (ca) 139.0.2](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-139.0.2.md) | Jun 10, 2025 | 139.0.2 | High | 1 | 0 | | [Mozilla Thunderbird (ca) 139.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-139.0.md) | May 27, 2025 | 139.0 | High | 3 | 0 | | [Mozilla Thunderbird (ca) 138.0.2](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-138.0.2.md) | May 20, 2025 | 138.0.2 | High | 2 | 0 | | [Mozilla Thunderbird (ca) 138.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-138.0.1.md) | May 13, 2025 | 138.0.1 | High | 3 | 0 | | [Mozilla Thunderbird (ca) 138.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-138.0.md) | Apr 29, 2025 | 138.0 | High | 11 | 0 | | [Mozilla Thunderbird (ca) 137.0.2](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-137.0.2.md) | Apr 15, 2025 | 137.0.2 | High | 3 | 0 | | [Mozilla Thunderbird (ca) 137.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-137.0.1.md) | Apr 4, 2025 | 137.0.1 | High | 1 | 0 | | [Mozilla Thunderbird (ca) 137.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-137.0.md) | Apr 1, 2025 | 137.0 | High | 5 | 0 | | [Mozilla Thunderbird (ca) 136.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-136.0.md) | Mar 4, 2025 | 136.0 | Patch now | 87 | 1 | | [Mozilla Thunderbird (ca) 115.14.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-115.14.0.md) | Aug 6, 2024 | 115.14.0 | High | 7 | 0 | | [Mozilla Thunderbird (ca) 115.13.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-115.13.0.md) | Jul 16, 2024 | 115.13.0 | High | 5 | 0 | | [Mozilla Thunderbird (ca) 115.12.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-115.12.1.md) | Jun 19, 2024 | 115.12.1 | High | 8 | 0 | | [Mozilla Thunderbird (ca) 115.11.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-115.11.0.md) | May 15, 2024 | 115.11.0 | High | 6 | 0 | | [Mozilla Thunderbird (ca) 115.10.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-115.10.1.md) | Apr 18, 2024 | 115.10.1 | Routine | 1 | 0 | | [Mozilla Thunderbird (ca) 115.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-115.10.0.md) | Apr 16, 2024 | 115.10.0 | Urgent | 7 | 0 | | [Mozilla Thunderbird (ca) 115.9.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-115.9.0.md) | Mar 19, 2024 | 115.9.0 | Urgent | 9 | 0 | | [Mozilla Thunderbird (ca) 115.8.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.ca-115.8.1.md) | Mar 5, 2024 | 115.8.1 | High | 1 | 0 | --- Data as of 2026-11-09T13:31:49Z UTC. 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