# Mozilla Thunderbird ESR (cs) security updates The latest version of Mozilla Thunderbird ESR (cs) is 153.7.0, released November 10, 2026. Patch Radar has 33 security fixes for Mozilla Thunderbird ESR (cs), closing 669 CVEs, 1 of which is being exploited. The newest security fix is Mozilla Thunderbird ESR (cs) 153.7.0, released November 10, 2026. - Web page: https://patchblox.com/security/product/windows-app/mozilla-thunderbird-esr-cs - Platform: Windows apps - Vendor: Mozilla - Latest version: 153.7.0 (Nov 10, 2026) - Supported: yes ## Security fixes, newest first | Fix | Released | Fixed in | Priority | CVEs | Exploited | |---|---|---|---|---:|---:| | [Mozilla Thunderbird ESR (cs) 153.7.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cs-153.7.0.md) | Nov 10, 2026 | 153.7.0 | Urgent | 45 | 0 | | [Mozilla Thunderbird ESR (cs) 153.4.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cs-153.4.0.md) | Sep 30, 2026 | 153.4.0 | Urgent | 60 | 0 | | [Mozilla Thunderbird ESR (cs) 153.3.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cs-153.3.0.md) | Sep 16, 2026 | 153.3.0 | Urgent | 66 | 0 | | [Mozilla Thunderbird ESR (cs) 153.2.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cs-153.2.0.md) | Sep 1, 2026 | 153.2.0 | Urgent | 27 | 0 | | [Mozilla Thunderbird ESR (cs) 153.1.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cs-153.1.0.md) | Aug 18, 2026 | 153.1.0 | Urgent | 40 | 0 | | [Mozilla Thunderbird ESR (cs) 153.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cs-153.0.1.md) | Jul 23, 2026 | 153.0.1 | Urgent | 272 | 0 | | [Mozilla Thunderbird ESR (cs) 140.12.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cs-140.12.0.md) | Jun 16, 2026 | 140.12.0 | High | 2 | 0 | | [Mozilla Thunderbird ESR (cs) 140.11.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cs-140.11.0.md) | May 19, 2026 | 140.11.0 | High | 4 | 0 | | [Mozilla Thunderbird ESR (cs) 140.10.2](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cs-140.10.2.md) | May 8, 2026 | 140.10.2 | High | 2 | 0 | | [Mozilla Thunderbird ESR (cs) 140.10.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cs-140.10.1.md) | Apr 30, 2026 | 140.10.1 | High | 1 | 0 | | [Mozilla Thunderbird ESR (cs) 140.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cs-140.10.0.md) | Apr 21, 2026 | 140.10.0 | High | 25 | 0 | | [Mozilla Thunderbird ESR (cs) 140.9.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cs-140.9.1.md) | Apr 7, 2026 | 140.9.1 | High | 1 | 0 | | [Mozilla Thunderbird ESR (cs) 140.7.2](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cs-140.7.2.md) | Feb 16, 2026 | 140.7.2 | High | 1 | 0 | | [Mozilla Thunderbird ESR (cs) 140.4.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cs-140.4.0.md) | Oct 14, 2025 | 140.4.0 | High | 6 | 0 | | [Mozilla Thunderbird ESR (cs) 140.3.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cs-140.3.0.md) | Sep 17, 2025 | 140.3.0 | High | 5 | 0 | | [Mozilla Thunderbird ESR (cs) 140.1.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cs-140.1.1.md) | Aug 5, 2025 | 140.1.1 | High | 32 | 0 | | [Mozilla Thunderbird ESR (cs) 128.11.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cs-128.11.1.md) | Jun 10, 2025 | 128.11.1 | High | 1 | 0 | | [Mozilla Thunderbird ESR (cs) 128.11.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cs-128.11.0.md) | May 27, 2025 | 128.11.0 | High | 2 | 0 | | [Mozilla Thunderbird ESR (cs) 128.10.2](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cs-128.10.2.md) | May 20, 2025 | 128.10.2 | High | 2 | 0 | | [Mozilla Thunderbird ESR (cs) 128.10.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cs-128.10.1.md) | May 14, 2025 | 128.10.1 | High | 2 | 0 | | [Mozilla Thunderbird ESR (cs) 128.10.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cs-128.10.0.md) | Apr 29, 2025 | 128.10.0 | High | 4 | 0 | | [Mozilla Thunderbird ESR (cs) 128.9.2](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cs-128.9.2.md) | Apr 15, 2025 | 128.9.2 | High | 3 | 0 | | [Mozilla Thunderbird ESR (cs) 128.9.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cs-128.9.0.md) | Apr 1, 2025 | 128.9.0 | High | 2 | 0 | | [Mozilla Thunderbird ESR (cs) 128.8.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cs-128.8.0.md) | Mar 5, 2025 | 128.8.0 | High | 10 | 0 | | [Mozilla Thunderbird ESR (cs) 128.7.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cs-128.7.0.md) | Feb 5, 2025 | 128.7.0 | Urgent | 10 | 0 | | [Mozilla Thunderbird ESR (cs) 128.6.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cs-128.6.0.md) | Jan 8, 2025 | 128.6.0 | High | 7 | 0 | | [Mozilla Thunderbird ESR (cs) 128.5.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cs-128.5.0.md) | Nov 26, 2024 | 128.5.0 | Urgent | 7 | 0 | | [Mozilla Thunderbird ESR (cs) 128.4.3](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cs-128.4.3.md) | Nov 13, 2024 | 128.4.3 | Routine | 1 | 0 | | [Mozilla Thunderbird ESR (cs) 128.4.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cs-128.4.0.md) | Oct 29, 2024 | 128.4.0 | High | 10 | 0 | | [Mozilla Thunderbird ESR (cs) 128.3.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cs-128.3.1.md) | Oct 10, 2024 | 128.3.1 | Patch now | 1 | 1 | | [Mozilla Thunderbird ESR (cs) 128.3.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cs-128.3.0.md) | Oct 2, 2024 | 128.3.0 | High | 11 | 0 | | [Mozilla Thunderbird ESR (cs) 128.2.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cs-128.2.0.md) | Sep 4, 2024 | 128.2.0 | High | 6 | 0 | | [Mozilla Thunderbird ESR (cs) 128.1.1](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird.esr.cs-128.1.1.md) | Aug 22, 2024 | 128.1.1 | High | 1 | 0 | --- Data as of 2026-11-11T07:45:43Z UTC. 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