# Mozilla Firefox (en-US) 105.0

Mozilla Firefox (en-US) 105.0, released September 21, 2022, fixes 8 CVEs in Mozilla Firefox (en-US). None of them is reported as exploited. Patch Radar priority: High. The latest Mozilla Firefox (en-US) is 159.0, which also fixes every one of these CVEs.

- Web page: https://patchblox.com/security/fix/windows-app/mozilla.firefox-105.0
- Platform: Windows apps
- Released: Sep 21, 2022
- Priority: High (Closes CVE-2022-40959, high severity)
- CVEs: 8, exploited: 0, on CISA KEV: 0
- Superseded by: [Mozilla Firefox (en-US) 159.0](https://patchblox.com/security/data/product/windows-app/mozilla-firefox-en-us.md), the latest version, which also fixes every CVE listed here

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Mozilla Firefox (en-US)](https://patchblox.com/security/data/product/windows-app/mozilla-firefox-en-us.md) |  | 105.0 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2022-40959](https://patchblox.com/security/data/cve/CVE-2022-40959.md) | High | Mozilla Thunderbird and 4 others: Insecure Storage of Sensitive Information | 8.8 | 0.0146 |  |
| [CVE-2022-40962](https://patchblox.com/security/data/cve/CVE-2022-40962.md) | High | Mozilla Thunderbird and 4 others: Out-of-bounds Write | 8.8 | 0.0143 |  |
| [CVE-2022-40957](https://patchblox.com/security/data/cve/CVE-2022-40957.md) | High | Mozilla Thunderbird and 4 others: Improper Handling of Inconsistent Structural Elements | 8.8 | 0.0124 |  |
| [CVE-2022-40958](https://patchblox.com/security/data/cve/CVE-2022-40958.md) | High | Mozilla Thunderbird and 4 others: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') | 8.8 | 0.0118 |  |
| [CVE-2022-40960](https://patchblox.com/security/data/cve/CVE-2022-40960.md) | High | Mozilla Thunderbird and 4 others: Use After Free | 8.8 | 0.0108 |  |
| [CVE-2022-40956](https://patchblox.com/security/data/cve/CVE-2022-40956.md) | High | Mozilla Thunderbird and 4 others: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | 8.8 | 0.0094 |  |
| [CVE-2022-46880](https://patchblox.com/security/data/cve/CVE-2022-46880.md) | High | Mozilla Thunderbird and 4 others: Use After Free | 8.8 | 0.0070 |  |
| [CVE-2022-3266](https://patchblox.com/security/data/cve/CVE-2022-3266.md) | Routine | Mozilla Thunderbird and 4 others: Out-of-bounds Read | 5.5 | 0.0030 |  |

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Data as of 2026-11-09T13:31:49Z 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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