Mozilla developers reported memory safety bugs present in Firefox 84. 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 < 85.
CVSS Details
- CVSS 3.1 Base Score: 8.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade firefoxUpgrade librewolf | Aug 22, 2024 | Feb 26, 2021 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Feb 26, 2021 |
| Gentoo Linux | — | Upgrade www-client/firefox-bin.Upgrade www-client/firefox. | Feb 1, 2021 | Feb 1, 2021 |
| Mfsa2021 03 | — | Upgrade to Mozilla Firefox version 85.0 | Jan 27, 2021 | Jan 26, 2021 |
| Ubuntu | — | Upgrade firefox | Feb 2, 2021 | Feb 1, 2021 |
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