# CVE-2020-6796: Firefox ESR: A content process could have modified shared memory relating to crash reporting information, crash itself,…

CVE-2020-6796 is fixed in 4 products on 2 platforms, first by firefox 73.0+build3-0ubuntu0.18.04.1, released February 10, 2020. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2020-6796
- Priority: High
- CVSS: 8.8 (Important)
- EPSS: 0.0137
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 10, 2020
- Vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2020-6796

## Description

A content process could have modified shared memory relating to crash reporting information, crash itself, and cause an out-of-bound write. This could have caused memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 73 and Firefox < ESR68.5.

## 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 | 0:68.5.0-2.el8_1 | [RHSA-2020:0512](https://patchblox.com/security/data/fix/linux/rhsa-2020-0512.md) | Feb 17, 2020 |
| Linux | firefox Ubuntu 18.04.6 LTS (bionic) | 73.0+build3-0ubuntu0.18.04.1 | [firefox 73.0+build3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-73.0-build3-0ubuntu0.18.04.1.md) | Feb 10, 2020 |
| Linux | firefox Ubuntu 20.04 LTS (focal) | 73.0+build3-0ubuntu1 | [firefox 73.0+build3-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-firefox-73.0-build3-0ubuntu1.md) | Feb 10, 2020 |
| Linux | firefox ol 8 | 0:68.5.0-2.0.1.el8_1 | [ELSA-2020-0512](https://patchblox.com/security/data/fix/linux/elsa-2020-0512.md) | Feb 19, 2020 |
| Linux | firefox-geckodriver Ubuntu 18.04.6 LTS (bionic) | 73.0+build3-0ubuntu0.18.04.1 | [firefox-geckodriver 73.0+build3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-geckodriver-73.0-build3-0ubuntu0.18.04.1.md) | Feb 10, 2020 |
| Linux | firefox-geckodriver Ubuntu 20.04 LTS (focal) | 73.0+build3-0ubuntu1 | [firefox-geckodriver 73.0+build3-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-firefox-geckodriver-73.0-build3-0ubuntu1.md) | Feb 10, 2020 |
| Linux | firefox-mozsymbols Ubuntu 18.04.6 LTS (bionic) | 73.0+build3-0ubuntu0.18.04.1 | [firefox-mozsymbols 73.0+build3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-mozsymbols-73.0-build3-0ubuntu0.18.04.1.md) | Feb 10, 2020 |
| Linux | firefox-mozsymbols Ubuntu 20.04 LTS (focal) | 73.0+build3-0ubuntu1 | [firefox-mozsymbols 73.0+build3-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-firefox-mozsymbols-73.0-build3-0ubuntu1.md) | Feb 10, 2020 |

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Data as of 2026-11-08T00:53:09Z 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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