critical
CVE-2020-12395
Mozilla: Memory safety bugs fixed in Firefox 76 and Firefox ESR 68.8
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.
Severity by source
NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Trivy's own label is CRITICAL. Rated critical by NVD, Red Hat, Amazon, Oracle. Rated lower by Ubuntu (medium).
Description
Mozilla developers and community members reported memory safety bugs present in Firefox 75 and Firefox ESR 68.7. 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 ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.
Affected packages and fixed versions
| Source | Package | Fixed in |
|---|---|---|
| amazon linux 2 | thunderbird, thunderbird-debuginfo | 68.8.0-1.amzn2 |
| Oracle Linux 6 | firefox, thunderbird | 68.8.0-1.0.1.el6_10 |
| Oracle Linux 7 | firefox, thunderbird | 68.8.0-1.0.1.el7_8 |
| Oracle Linux 8 | firefox, thunderbird | 68.8.0-1.0.1.el8_2 |
| alpine 3.11 | firefox-esr | 68.8.0-r0 |
| alpine 3.12 | firefox, firefox-esr, mozjs68 | 76.0-r0 and 1 more |
| alpine 3.13 | firefox, firefox-esr | 76.0-r0 and 1 more |
| alpine 3.14 | firefox, firefox-esr | 76.0-r0 and 1 more |
| alpine 3.15 | firefox, firefox-esr | 76.0-r0 and 1 more |
| alpine 3.16 | firefox, firefox-esr, thunderbird | 76.0-r0 and 1 more |
| alpine 3.17 | firefox, firefox-esr, thunderbird | 76.0-r0 and 1 more |
| alpine 3.18 | firefox, firefox-esr, thunderbird | 76.0-r0 and 1 more |
Show all 87 entries from 39 sources
| Source | Package | Fixed in |
|---|---|---|
| amazon linux 2 | thunderbird | 68.8.0-1.amzn2 |
| amazon linux 2 | thunderbird-debuginfo | 68.8.0-1.amzn2 |
| Oracle Linux 6 | firefox | 68.8.0-1.0.1.el6_10 |
| Oracle Linux 6 | thunderbird | 68.8.0-1.0.1.el6_10 |
| Oracle Linux 7 | firefox | 68.8.0-1.0.1.el7_8 |
| Oracle Linux 7 | thunderbird | 68.8.0-1.0.1.el7_8 |
| Oracle Linux 8 | firefox | 68.8.0-1.0.1.el8_2 |
| Oracle Linux 8 | thunderbird | 68.8.0-1.0.1.el8_2 |
| alpine 3.11 | firefox-esr | 68.8.0-r0 |
| alpine 3.12 | firefox | 76.0-r0 |
| alpine 3.12 | firefox-esr | 68.8.0-r0 |
| alpine 3.12 | mozjs68 | 68.8.0-r0 |
| alpine 3.13 | firefox | 76.0-r0 |
| alpine 3.13 | firefox-esr | 68.8.0-r0 |
| alpine 3.14 | firefox | 76.0-r0 |
| alpine 3.14 | firefox-esr | 68.8.0-r0 |
| alpine 3.15 | firefox | 76.0-r0 |
| alpine 3.15 | firefox-esr | 68.8.0-r0 |
| alpine 3.16 | firefox | 76.0-r0 |
| alpine 3.16 | firefox-esr | 68.8.0-r0 |
| alpine 3.16 | thunderbird | 68.8.0-r0 |
| alpine 3.17 | firefox | 76.0-r0 |
| alpine 3.17 | firefox-esr | 68.8.0-r0 |
| alpine 3.17 | thunderbird | 68.8.0-r0 |
| alpine 3.18 | firefox | 76.0-r0 |
| alpine 3.18 | firefox-esr | 68.8.0-r0 |
| alpine 3.18 | thunderbird | 68.8.0-r0 |
| alpine 3.19 | firefox | 76.0-r0 |
| alpine 3.19 | firefox-esr | 68.8.0-r0 |
| alpine 3.19 | thunderbird | 68.8.0-r0 |
| alpine 3.20 | firefox | 76.0-r0 |
| alpine 3.20 | firefox-esr | 68.8.0-r0 |
| alpine 3.20 | thunderbird | 68.8.0-r0 |
| alpine 3.21 | firefox | 76.0-r0 |
| alpine 3.21 | firefox-esr | 68.8.0-r0 |
| alpine 3.21 | librewolf | 76.0-r0 |
| alpine 3.21 | thunderbird | 68.8.0-r0 |
| alpine 3.22 | firefox | 76.0-r0 |
| alpine 3.22 | firefox-esr | 68.8.0-r0 |
| alpine 3.22 | librewolf | 76.0-r0 |
| alpine 3.22 | thunderbird | 68.8.0-r0 |
| alpine 3.23 | firefox | 76.0-r0 |
| alpine 3.23 | firefox-esr | 68.8.0-r0 |
| alpine 3.23 | librewolf | 76.0-r0 |
| alpine 3.23 | thunderbird | 68.8.0-r0 |
| alpine 3.24 | librewolf | 76.0-r0 |
| alpine edge | librewolf | 76.0-r0 |
| debian 10 | firefox-esr | 68.8.0esr-1~deb10u1 |
| debian 10 | thunderbird | 1:68.8.0-1~deb10u1 |
| debian 11 | firefox-esr | 68.8.0esr-1 |
| debian 11 | thunderbird | 1:68.8.0-1 |
| debian 12 | firefox-esr | 68.8.0esr-1 |
| debian 12 | thunderbird | 1:68.8.0-1 |
| debian 13 | firefox-esr | 68.8.0esr-1 |
| debian 13 | thunderbird | 1:68.8.0-1 |
| debian 14 | firefox-esr | 68.8.0esr-1 |
| debian 14 | thunderbird | 1:68.8.0-1 |
| debian 8 | firefox-esr | 68.8.0esr-1~deb8u1 |
| debian 8 | thunderbird | 1:68.8.0-1~deb8u1 |
| debian 9 | firefox-esr | 68.8.0esr-1~deb9u1 |
| debian 9 | thunderbird | 1:68.8.0-1~deb9u1 |
| echo | firefox-esr | 68.8.0esr-1 |
| echo | thunderbird | 1:68.8.0-1 |
| ubuntu 16.04 | firefox | 76.0+build2-0ubuntu0.16.04.1 |
| ubuntu 16.04 | thunderbird | 1:68.8.0+build2-0ubuntu0.16.04.2 |
| ubuntu 18.04 | firefox | 76.0+build2-0ubuntu0.18.04.1 |
| ubuntu 18.04 | thunderbird | 1:68.8.0+build2-0ubuntu0.18.04.2 |
| ubuntu 19.10 | firefox | 76.0+build2-0ubuntu0.19.10.1 |
| ubuntu 19.10 | thunderbird | 1:68.8.0+build2-0ubuntu0.19.10.2 |
| ubuntu 20.04 | firefox | 76.0+build2-0ubuntu0.20.04.1 |
| ubuntu 20.04 | thunderbird | 1:68.8.0+build2-0ubuntu0.20.04.2 |
| ubuntu 20.10 | firefox | 76.0+build2-0ubuntu1 |
| ubuntu 20.10 | thunderbird | 1:68.8.0+build2-0ubuntu1 |
| ubuntu 21.04 | firefox | 76.0+build2-0ubuntu1 |
| ubuntu 21.04 | thunderbird | 1:68.8.0+build2-0ubuntu1 |
| ubuntu 21.10 | firefox | 76.0+build2-0ubuntu1 |
| ubuntu 21.10 | thunderbird | 1:68.8.0+build2-0ubuntu1 |
| ubuntu 22.04 | firefox | 76.0+build2-0ubuntu1 |
| ubuntu 22.04 | thunderbird | 1:68.8.0+build2-0ubuntu1 |
| ubuntu 22.10 | firefox | 76.0+build2-0ubuntu1 |
| ubuntu 22.10 | thunderbird | 1:68.8.0+build2-0ubuntu1 |
| ubuntu 23.04 | firefox | 76.0+build2-0ubuntu1 |
| ubuntu 23.04 | thunderbird | 1:68.8.0+build2-0ubuntu1 |
| ubuntu 23.10 | firefox | 76.0+build2-0ubuntu1 |
| ubuntu 23.10 | thunderbird | 1:68.8.0+build2-0ubuntu1 |
| ubuntu 24.04 | firefox | 76.0+build2-0ubuntu1 |
| ubuntu 24.04 | thunderbird | 1:68.8.0+build2-0ubuntu1 |
References
- https://access.redhat.com/security/cve/CVE-2020-12395
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=1595886%2C1611482%2C1614704%2C1624098%2C1625749%2C1626382%2C1628076%2C1631508
- https://linux.oracle.com/cve/CVE-2020-12395.html
- https://linux.oracle.com/errata/ELSA-2020-2050.html
- https://nvd.nist.gov/vuln/detail/CVE-2020-12395
- https://security.gentoo.org/glsa/202005-03
- https://security.gentoo.org/glsa/202005-04
- https://ubuntu.com/security/notices/USN-4353-1
All 17 references
- https://ubuntu.com/security/notices/USN-4373-1
- https://usn.ubuntu.com/4373-1/
- https://www.cve.org/CVERecord?id=CVE-2020-12395
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-16/#CVE-2020-12395
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-17/#CVE-2020-12395
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-18/#CVE-2020-12395
- https://www.mozilla.org/security/advisories/mfsa2020-16/
- https://www.mozilla.org/security/advisories/mfsa2020-17/
- https://www.mozilla.org/security/advisories/mfsa2020-18/