Mozilla developers and community members reported memory safety bugs present in Firefox 90. 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 < 91.
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 | Aug 17, 2021 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Aug 17, 2021 |
| Gentoo Linux | — | Upgrade www-client/firefox.Upgrade www-client/firefox-bin. | Feb 22, 2022 | Aug 17, 2021 |
| Mfsa2021 33 | — | Upgrade to Mozilla Firefox version 91.0 | Aug 12, 2021 | Aug 10, 2021 |
| Oracle Solaris | — | Upgrade web/browser/firefox to version 91.3.0-11.4.40.0.1.107.1 on Solaris 11.4Upgrade web/data/firefox-bookmarks to version 91.3.0-11.4.40.0.1.107.1 on Solaris 11.4Upgrade mail/thunderbird to version 91.3.0-11.4.40.0.1.107.1 on Solaris 11.4 | Dec 13, 2021 | Aug 17, 2021 |
| Suse | — | Upgrade mozillafirefox-branding-sledUpgrade rust-cbindgenUpgrade mozillafirefoxUpgrade mozillafirefox-branding-upstreamUpgrade mozillafirefox-translations-commonUpgrade mozillafirefox-branding-sleUpgrade mozillafirefox-translations-otherUpgrade mozillafirefox-devel | Sep 23, 2021 | Aug 11, 2021 |
| Ubuntu | — | Upgrade firefox | Aug 12, 2021 | Aug 11, 2021 |
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