# firefox 126.0+build2-0ubuntu0.20.04.1: firefox 126.0+build2-0ubuntu0.20.04.1 for Ubuntu 20.04.3 LTS (focal)

firefox 126.0+build2-0ubuntu0.20.04.1, released November 6, 2024, fixes 15 CVEs in firefox. None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.

- Web page: https://patchblox.com/security/fix/linux/ubuntu-focal-firefox-126.0-build2-0ubuntu0.20.04.1
- Platform: Linux
- Released: Nov 6, 2024
- Priority: High (Closes CVE-2024-4367, high severity)
- CVEs: 15, exploited: 0, on CISA KEV: 0

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [firefox](https://patchblox.com/security/data/product/linux/firefox.md) | Ubuntu 20.04.3 LTS (focal) | 126.0+build2-0ubuntu0.20.04.1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2024-4367](https://patchblox.com/security/data/cve/CVE-2024-4367.md) | High | Mozilla Firefox ESR and 6 others: Improper Check for Unusual or Exceptional Conditions | 8.8 | 0.7066 |  |
| [CVE-2024-4770](https://patchblox.com/security/data/cve/CVE-2024-4770.md) | High | Mozilla Firefox ESR and 6 others: Use After Free | 8.8 | 0.0059 |  |
| [CVE-2024-4764](https://patchblox.com/security/data/cve/CVE-2024-4764.md) | High | Mozilla Firefox ESR and 4 others: Use After Free | 9.8 | 0.0057 |  |
| [CVE-2024-4773](https://patchblox.com/security/data/cve/CVE-2024-4773.md) | High | Mozilla Firefox ESR and 4 others: URL Redirection to Untrusted Site ('Open Redirect') | 7.5 | 0.0054 |  |
| [CVE-2024-4777](https://patchblox.com/security/data/cve/CVE-2024-4777.md) | High | Mozilla Firefox ESR and 6 others: Use After Free | 8.8 | 0.0054 |  |
| [CVE-2024-4771](https://patchblox.com/security/data/cve/CVE-2024-4771.md) | High | Mozilla Firefox ESR and 4 others: Use After Free | 8.6 | 0.0052 |  |
| [CVE-2024-4778](https://patchblox.com/security/data/cve/CVE-2024-4778.md) | High | Mozilla Firefox ESR and 4 others: Improper Handling of Overlap Between Protected Memory Ranges | 9.8 | 0.0044 |  |
| [CVE-2024-4776](https://patchblox.com/security/data/cve/CVE-2024-4776.md) | High | Mozilla Firefox ESR and 4 others: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | 8.2 | 0.0042 |  |
| [CVE-2024-4768](https://patchblox.com/security/data/cve/CVE-2024-4768.md) | Routine | Mozilla Firefox ESR and 6 others: Improper Preservation of Permissions | 6.1 | 0.0054 |  |
| [CVE-2024-4767](https://patchblox.com/security/data/cve/CVE-2024-4767.md) | Routine | Mozilla Firefox ESR and 6 others: Exposure of Private Personal Information to an Unauthorized Actor | 6.1 | 0.0049 |  |
| [CVE-2024-10941](https://patchblox.com/security/data/cve/CVE-2024-10941.md) | Routine | Mozilla Firefox ESR and 4 others: Improper Neutralization of Invalid Characters in Identifiers in Web Pages | 6.5 | 0.0043 |  |
| [CVE-2024-4774](https://patchblox.com/security/data/cve/CVE-2024-4774.md) | Routine | Mozilla Firefox ESR and 4 others: Reliance on Undefined, Unspecified, or Implementation-Defined Behavior | 6.5 | 0.0037 |  |
| [CVE-2024-4769](https://patchblox.com/security/data/cve/CVE-2024-4769.md) | Routine | Mozilla Firefox ESR and 6 others: Insufficient Type Distinction | 6.1 | 0.0037 |  |
| [CVE-2024-4775](https://patchblox.com/security/data/cve/CVE-2024-4775.md) | Routine | Mozilla Firefox ESR and 4 others: Missing Handler | 5.9 | 0.0022 |  |
| [CVE-2024-4772](https://patchblox.com/security/data/cve/CVE-2024-4772.md) | Routine | Mozilla Firefox ESR and 4 others: Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) | 5.9 | 0.0022 |  |

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Data as of 2026-11-14T20:11:19Z 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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