# CVE-2018-5186: firefox: Memory safety bugs present in Firefox 60

CVE-2018-5186 is fixed in 4 products on 1 platform, first by firefox 61.0+build3-0ubuntu0.18.04.1, released June 26, 2018. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2018-5186
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0220
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 26, 2018

## Description

Memory safety bugs present in Firefox 60. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox < 61.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | firefox Ubuntu 18.04.6 LTS (bionic) | 61.0+build3-0ubuntu0.18.04.1 | [firefox 61.0+build3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-61.0-build3-0ubuntu0.18.04.1.md) | Jun 26, 2018 |
| Linux | firefox-globalmenu Ubuntu 18.04.6 LTS (bionic) | 61.0+build3-0ubuntu0.18.04.1 | [firefox-globalmenu 61.0+build3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-globalmenu-61.0-build3-0ubuntu0.18.04.1.md) | Jun 26, 2018 |
| Linux | firefox-mozsymbols Ubuntu 18.04.6 LTS (bionic) | 61.0+build3-0ubuntu0.18.04.1 | [firefox-mozsymbols 61.0+build3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-mozsymbols-61.0-build3-0ubuntu0.18.04.1.md) | Jun 26, 2018 |
| Linux | firefox-testsuite Ubuntu 18.04.6 LTS (bionic) | 61.0+build3-0ubuntu0.18.04.1 | [firefox-testsuite 61.0+build3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-testsuite-61.0-build3-0ubuntu0.18.04.1.md) | Jun 26, 2018 |

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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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo