# ELSA-2025-1283: firefox security update

ELSA-2025-1283, released February 11, 2025, fixes 8 CVEs in firefox (version 0:128.7.0-1.0.1.el8_10). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/elsa-2025-1283
- Platform: Linux
- Released: Feb 11, 2025
- Priority: High (Closes CVE-2025-1009, high severity)
- CVEs: 8, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://linux.oracle.com/errata/ELSA-2025-1283.html

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [firefox](https://patchblox.com/security/data/product/linux/firefox.md) | ol 8 | 0:128.7.0-1.0.1.el8_10 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2025-1009](https://patchblox.com/security/data/cve/CVE-2025-1009.md) | High | Use-after-free in XSLT | 9.8 | 0.0121 |  |
| [CVE-2025-1011](https://patchblox.com/security/data/cve/CVE-2025-1011.md) | High | A bug in WebAssembly code generation could result in a crash | 8.8 | 0.0063 |  |
| [CVE-2025-1016](https://patchblox.com/security/data/cve/CVE-2025-1016.md) | High | Memory safety bugs fixed in Firefox 135, Thunderbird 135, Firefox ESR 115.20, Firefox ESR 128.7, Thunderbird 115.20, and Thunderbird 128.7 | 9.8 | 0.0059 |  |
| [CVE-2025-1017](https://patchblox.com/security/data/cve/CVE-2025-1017.md) | High | Memory safety bugs fixed in Firefox 135, Thunderbird 135, Firefox ESR 128.7, and Thunderbird 128.7 | 9.8 | 0.0058 |  |
| [CVE-2025-1010](https://patchblox.com/security/data/cve/CVE-2025-1010.md) | High | Use-after-free in Custom Highlight | 8.8 | 0.0046 |  |
| [CVE-2025-1012](https://patchblox.com/security/data/cve/CVE-2025-1012.md) | High | Use-after-free during concurrent delazification | 8.8 | 0.0045 |  |
| [CVE-2025-1014](https://patchblox.com/security/data/cve/CVE-2025-1014.md) | High | Certificate length was not properly checked | 8.8 | 0.0039 |  |
| [CVE-2025-1013](https://patchblox.com/security/data/cve/CVE-2025-1013.md) | High | Potential opening of private browsing tabs in normal browsing windows | 8.8 | 0.0033 |  |

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Data as of 2026-11-07T18:46:35Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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