# CVE-2018-18503: firefox: When JavaScript is used to create and manipulate an audio buffer, a potentially exploitable crash may occur because o...

CVE-2018-18503 is fixed in 4 products on 1 platform, first by firefox 65.0+build2-0ubuntu0.18.04.1, released January 29, 2019. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2018-18503
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0138
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jan 29, 2019

## Description

When JavaScript is used to create and manipulate an audio buffer, a potentially exploitable crash may occur because of a compartment mismatch in some situations. This vulnerability affects Firefox < 65.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | firefox Ubuntu 18.04.6 LTS (bionic) | 65.0+build2-0ubuntu0.18.04.1 | [firefox 65.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-65.0-build2-0ubuntu0.18.04.1.md) | Jan 29, 2019 |
| Linux | firefox-globalmenu Ubuntu 18.04.6 LTS (bionic) | 65.0+build2-0ubuntu0.18.04.1 | [firefox-globalmenu 65.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-globalmenu-65.0-build2-0ubuntu0.18.04.1.md) | Jan 29, 2019 |
| Linux | firefox-mozsymbols Ubuntu 18.04.6 LTS (bionic) | 65.0+build2-0ubuntu0.18.04.1 | [firefox-mozsymbols 65.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-mozsymbols-65.0-build2-0ubuntu0.18.04.1.md) | Jan 29, 2019 |
| Linux | firefox-testsuite Ubuntu 18.04.6 LTS (bionic) | 65.0+build2-0ubuntu0.18.04.1 | [firefox-testsuite 65.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-testsuite-65.0-build2-0ubuntu0.18.04.1.md) | Jan 29, 2019 |

---

Data as of 2026-11-07T12:40:37Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo