# CVE-2019-11758: Firefox ESR: Mozilla community member Philipp reported a memory safety bug present in Firefox 68 when 360 Total Security…

CVE-2019-11758 is fixed in 3 products on 2 platforms, first by RHSA-2019:3196, released October 24, 2019. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2019-11758
- Priority: Urgent
- CVSS: 8.8 (Critical)
- EPSS: 0.0133
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 24, 2019
- Vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2019-11758

## Description

Mozilla community member Philipp reported a memory safety bug present in Firefox 68 when 360 Total Security was installed. This bug showed evidence of memory corruption in the accessibility engine and we presume that with enough effort that it could be exploited to run arbitrary code. This vulnerability affects Firefox < 69, Thunderbird < 68.2, and Firefox ESR < 68.2.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Windows apps | Mozilla Firefox ESR (en-US) | 78.0esr | [Mozilla Firefox ESR (en-US) 78.0esr](https://patchblox.com/security/data/fix/windows-app/mozilla.firefox.esr-78.0esr.md) | Jun 25, 2020 |
| Linux | firefox RHEL 8 | 0:68.2.0-2.el8_0 | [RHSA-2019:3196](https://patchblox.com/security/data/fix/linux/rhsa-2019-3196.md) | Oct 24, 2019 |
| Linux | firefox ol 8 | 0:68.2.0-2.0.1.el8_0 | [ELSA-2019-3196](https://patchblox.com/security/data/fix/linux/elsa-2019-3196.md) | Oct 24, 2019 |
| Linux | thunderbird RHEL 8 | 0:68.2.0-1.el8_0 | [RHSA-2019:3237](https://patchblox.com/security/data/fix/linux/rhsa-2019-3237.md) | Oct 29, 2019 |
| Linux | thunderbird ol 8 | 0:68.2.0-1.0.1.el8_0 | [ELSA-2019-3237](https://patchblox.com/security/data/fix/linux/elsa-2019-3237.md) | Oct 30, 2019 |

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