# Mozilla Thunderbird ESR (id) 140.4.0

Mozilla Thunderbird ESR (id) 140.4.0, released October 14, 2025, fixes 6 CVEs in Mozilla Thunderbird ESR (id). None of them is reported as exploited. Patch Radar priority: High. The latest Mozilla Thunderbird ESR (id) is 153.7.0, which also fixes every one of these CVEs.

- Web page: https://patchblox.com/security/fix/windows-app/mozilla.thunderbird.esr.id-140.4.0
- Platform: Windows apps
- Released: Oct 14, 2025
- Priority: High (Closes CVE-2025-11708, high severity)
- CVEs: 6, exploited: 0, on CISA KEV: 0
- Superseded by: [Mozilla Thunderbird ESR (id) 153.7.0](https://patchblox.com/security/data/product/windows-app/mozilla-thunderbird-esr-id.md), the latest version, which also fixes every CVE listed here

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Mozilla Thunderbird ESR (id)](https://patchblox.com/security/data/product/windows-app/mozilla-thunderbird-esr-id.md) |  | 140.4.0 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2025-11708](https://patchblox.com/security/data/cve/CVE-2025-11708.md) | High | Use-after-free in MediaTrackGraphImpl::GetInstance() | 9.8 | 0.0051 |  |
| [CVE-2025-11710](https://patchblox.com/security/data/cve/CVE-2025-11710.md) | High | Cross-process information leaked due to malicious IPC messages | 9.8 | 0.0042 |  |
| [CVE-2025-11714](https://patchblox.com/security/data/cve/CVE-2025-11714.md) | High | Memory safety bugs fixed in Firefox ESR 115.29, Firefox ESR 140.4, Thunderbird ESR 140.4, Firefox 144 and Thunderbird 144 | 8.8 | 0.0034 |  |
| [CVE-2025-11713](https://patchblox.com/security/data/cve/CVE-2025-11713.md) | High | Potential user-assisted code execution in “Copy as cURL” command | 8.1 | 0.0029 |  |
| [CVE-2025-11711](https://patchblox.com/security/data/cve/CVE-2025-11711.md) | High | Some non-writable Object properties could be modified | 7.5 | 0.0023 |  |
| [CVE-2025-11712](https://patchblox.com/security/data/cve/CVE-2025-11712.md) | High | An OBJECT tag type attribute overrode browser behavior on web resources without a content-type | 7.5 | 0.0022 |  |

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Data as of 2026-11-11T19:49:26Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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