A malicious webpage could have triggered a use-after-free, memory corruption, and a potentially exploitable crash. *This bug could only be triggered when accessibility was enabled.*. This vulnerability affects Thunderbird < 78.12, Firefox ESR < 78.12, and Firefox < 90.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade thunderbirdUpgrade firefox | May 4, 2022 | Aug 5, 2021 |
| Alpine Linux | — | Upgrade firefox-esrUpgrade thunderbirdUpgrade firefoxUpgrade librewolf | Aug 22, 2024 | Aug 5, 2021 |
| Amazon Linux Ami 2 | — | Upgrade thunderbird-debuginfoUpgrade thunderbird | Sep 16, 2021 | Aug 5, 2021 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Aug 5, 2021 |
| Centos_linux | — | Upgrade firefoxUpgrade firefox-debuginfoUpgrade thunderbird-debuginfoUpgrade thunderbirdUpgrade thunderbird-debugsourceUpgrade firefox-debugsource | Jul 16, 2021 | Jul 15, 2021 |
| Debian | — | Upgrade thunderbirdUpgrade firefox-esr | Jul 16, 2021 | Jul 16, 2021 |
| Gentoo Linux | — | Upgrade www-client/firefox.Upgrade www-client/firefox-bin.Upgrade mail-client/thunderbird.Upgrade mail-client/thunderbird-bin. | Feb 22, 2022 | Aug 5, 2021 |
| Mfsa2021 28 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox version 90.0 | Jul 14, 2021 | Jul 13, 2021 |
| Mfsa2021 29 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 78.12 | Jul 14, 2021 | Jul 13, 2021 |
| Mozilla Thunderbird | — | Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 78.12 | Jul 14, 2021 | Jul 13, 2021 |
| Oracle Solaris | — | Upgrade web/data/firefox-bookmarks to version 78.14.0-11.4.38.0.1.101.3 on Solaris 11.4Upgrade web/browser/firefox to version 78.14.0-11.4.38.0.1.101.3 on Solaris 11.4Upgrade mail/thunderbird to version 78.14.0-11.4.38.0.1.101.3 on Solaris 11.4 | Nov 17, 2021 | Aug 5, 2021 |
| Oracle_linux | — | Upgrade thunderbirdUpgrade firefox | Jul 16, 2021 | Jul 13, 2021 |
| Redhat_linux | — | Upgrade firefox-debugsourceUpgrade firefoxNo solution existsUpgrade firefox-debuginfoUpgrade thunderbird-debugsourceUpgrade thunderbird-debuginfoUpgrade thunderbird | Jul 16, 2021 | Jul 15, 2021 |
| Rocky_linux | — | Upgrade firefox-debuginfoUpgrade firefox-debugsourceUpgrade thunderbird-debuginfoUpgrade thunderbird-debugsourceUpgrade firefoxUpgrade thunderbird | Mar 12, 2024 | Aug 5, 2021 |
| Suse | — | Upgrade MozillaThunderbird-translations-commonUpgrade MozillaFirefox-develUpgrade mozillafirefox-branding-upstreamUpgrade mozillafirefox-buildsymbolsUpgrade MozillaThunderbird-translations-otherUpgrade MozillaFirefox-translations-otherUpgrade MozillaFirefoxUpgrade MozillaThunderbirdUpgrade MozillaFirefox-translations-common | Jul 19, 2021 | Jul 16, 2021 |
| Ubuntu | — | Upgrade firefoxUpgrade thunderbird | Jul 17, 2021 | Jul 16, 2021 |
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