# CVE-2024-8389: Firefox Developer Edition and 1 other: Improper Restriction of Operations within the Bounds of a Memory Buffer

CVE-2024-8389 is fixed in 5 products on 2 platforms, first by Firefox Developer Edition (en-US) 130.0, released August 6, 2024. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2024-8389
- Priority: High
- CVSS: 9.8 (Medium)
- EPSS: 0.0049
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 3, 2024
- Weakness: CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
- Vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2024-8389

## Description

Memory safety bugs present in Firefox 129. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 130.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Windows apps | Firefox Developer Edition (en-US) | 130.0 | [Firefox Developer Edition (en-US) 130.0](https://patchblox.com/security/data/fix/windows-app/mozilla.firefox.developeredition-130.0.md) | Aug 6, 2024 |
| Windows apps | Mozilla Firefox (en-US) | 129.0.1 | [Mozilla Firefox (en-US) 129.0.1](https://patchblox.com/security/data/fix/windows-app/mozilla.firefox-129.0.1.md) | Aug 6, 2024 |
| Linux | firefox Ubuntu 20.04 LTS (focal) | 130.0+build2-0ubuntu0.20.04.1 | [firefox 130.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-firefox-130.0-build2-0ubuntu0.20.04.1.md) | Sep 3, 2024 |
| Linux | firefox-geckodriver Ubuntu 20.04 LTS (focal) | 130.0+build2-0ubuntu0.20.04.1 | [firefox-geckodriver 130.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-firefox-geckodriver-130.0-build2-0ubuntu0.20.04.1.md) | Sep 3, 2024 |
| Linux | firefox-mozsymbols Ubuntu 20.04 LTS (focal) | 130.0+build2-0ubuntu0.20.04.1 | [firefox-mozsymbols 130.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-firefox-mozsymbols-130.0-build2-0ubuntu0.20.04.1.md) | Sep 3, 2024 |

---

Data as of 2026-11-08T13:06:02Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.