# Mozilla Firefox (en-US) 103.0

Mozilla Firefox (en-US) 103.0, released July 26, 2022, fixes 7 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-103.0
- Platform: Windows apps
- Released: Jul 26, 2022
- Priority: High (Closes CVE-2022-2505, high severity)
- CVEs: 7, 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- Superseded by: [Mozilla Firefox (en-US) 159.0](https://patchblox.com/security/data/product/windows-app/mozilla-firefox-en-us.md), the latest version, which also fixes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) |  | 103.0 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2022-2505](https://patchblox.com/security/data/cve/CVE-2022-2505.md) | High | Mozilla Thunderbird and 4 others: Out-of-bounds Write | 8.8 | 0.0080 |  |
| [CVE-2022-36319](https://patchblox.com/security/data/cve/CVE-2022-36319.md) | High | Mozilla Thunderbird and 4 others: Improper Restriction of Rendered UI Layers or Frames | 8.8 | 0.0074 |  |
| [CVE-2022-36320](https://patchblox.com/security/data/cve/CVE-2022-36320.md) | High | Mozilla Firefox and 2 others: Out-of-bounds Write | 9.8 | 0.0071 |  |
| [CVE-2022-36318](https://patchblox.com/security/data/cve/CVE-2022-36318.md) | High | Mozilla Thunderbird and 4 others: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') | 8.8 | 0.0053 |  |
| [CVE-2022-36316](https://patchblox.com/security/data/cve/CVE-2022-36316.md) | Routine | Mozilla Firefox and 2 others: URL Redirection to Untrusted Site ('Open Redirect') | 6.1 | 0.0034 |  |
| [CVE-2022-36314](https://patchblox.com/security/data/cve/CVE-2022-36314.md) | Routine | Mozilla Thunderbird and 4 others: Uncontrolled Search Path Element | 5.5 | 0.0022 |  |
| [CVE-2022-36315](https://patchblox.com/security/data/cve/CVE-2022-36315.md) | Routine | Mozilla Firefox and 2 others: Insufficient Verification of Data Authenticity | 4.3 | 0.0021 |  |

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Data as of 2026-11-09T01:18:40Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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