# Mozilla Thunderbird (en-US) 115.10.0

Mozilla Thunderbird (en-US) 115.10.0, released April 16, 2024, fixes 7 CVEs in Mozilla Thunderbird (en-US). None of them is reported as exploited. Patch Radar priority: Urgent. The latest Mozilla Thunderbird (en-US) is 159.0, which also fixes every one of these CVEs.

- Web page: https://patchblox.com/security/fix/windows-app/mozilla.thunderbird-115.10.0
- Platform: Windows apps
- Released: Apr 16, 2024
- Priority: Urgent (Closes CVE-2024-3863, rated Critical)
- CVEs: 7, exploited: 0, on CISA KEV: 0
- Superseded by: [Mozilla Thunderbird (en-US) 159.0](https://patchblox.com/security/data/product/windows-app/mozilla-thunderbird-en-us.md), the latest version, which also fixes every CVE listed here

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Mozilla Thunderbird (en-US)](https://patchblox.com/security/data/product/windows-app/mozilla-thunderbird-en-us.md) |  | 115.10.0 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2024-3863](https://patchblox.com/security/data/cve/CVE-2024-3863.md) | Urgent | Mozilla Firefox ESR and 5 others: Unrestricted Upload of File with Dangerous Type | 9.8 | 0.0081 |  |
| [CVE-2024-3864](https://patchblox.com/security/data/cve/CVE-2024-3864.md) | High | Mozilla Firefox ESR and 5 others: Improper Restriction of Operations within the Bounds of a Memory Buffer | 8.1 | 0.0085 |  |
| [CVE-2024-3854](https://patchblox.com/security/data/cve/CVE-2024-3854.md) | High | Mozilla Firefox ESR and 5 others: Out-of-bounds Read | 8.8 | 0.0073 |  |
| [CVE-2024-3852](https://patchblox.com/security/data/cve/CVE-2024-3852.md) | High | Mozilla Firefox ESR and 5 others: Symbolic Name not Mapping to Correct Object | 7.5 | 0.0063 |  |
| [CVE-2024-3857](https://patchblox.com/security/data/cve/CVE-2024-3857.md) | High | Mozilla Firefox ESR and 5 others: Use After Free | 7.8 | 0.0025 |  |
| [CVE-2024-3859](https://patchblox.com/security/data/cve/CVE-2024-3859.md) | Routine | Mozilla Firefox ESR and 5 others: Integer Overflow or Wraparound | 6.1 | 0.0067 |  |
| [CVE-2024-2609](https://patchblox.com/security/data/cve/CVE-2024-2609.md) | Routine | Mozilla Firefox ESR and 5 others: Product UI does not Warn User of Unsafe Actions | 6.1 | 0.0060 |  |

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Data as of 2026-11-10T20:03:11Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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