After accepting an untrusted certificate, handling an empty pkcs7 sequence as part of the certificate data could have lead to a crash. This crash is believed to be unexploitable. This vulnerability affects Firefox ESR < 91.5, Firefox < 96, and Thunderbird < 91.5.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade thunderbirdUpgrade firefox | May 4, 2022 | Jan 12, 2022 |
| Alpine Linux | — | Upgrade librewolfUpgrade firefox-esrUpgrade thunderbirdUpgrade firefox | Aug 22, 2024 | Dec 22, 2022 |
| Amazon Linux Ami 2 | — | Upgrade thunderbirdUpgrade thunderbird-debuginfo | Jul 4, 2022 | Jul 4, 2022 |
| Centos_linux | — | Upgrade firefox-debugsourceUpgrade firefox-debuginfoUpgrade thunderbird-debugsourceUpgrade thunderbird-debuginfoUpgrade firefoxUpgrade thunderbird | Feb 17, 2022 | Jan 12, 2022 |
| Debian | — | Upgrade firefox-esrUpgrade thunderbirdUpgrade nss | Jan 17, 2022 | Jan 17, 2022 |
| Gentoo Linux | — | Upgrade www-client/firefox.Upgrade mail-client/thunderbird-bin.Upgrade mail-client/thunderbird.Upgrade www-client/firefox-bin. | Feb 22, 2022 | Feb 21, 2022 |
| Huawei Euleros 2_0_sp10 | — | Upgrade nssUpgrade nss-softoknUpgrade nss-util | Sep 15, 2025 | Aug 9, 2025 |
| Huawei Euleros 2_0_sp11 | — | Upgrade nssUpgrade nss-utilUpgrade nss-softokn | Aug 13, 2025 | Aug 9, 2025 |
| Huawei Euleros 2_0_sp12 | — | Upgrade nssUpgrade nss-utilUpgrade nss-softokn | Sep 15, 2025 | Aug 9, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade nss-utilUpgrade nss-softoknUpgrade nss | Aug 13, 2025 | Aug 9, 2025 |
| Mfsa2022 01 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox version 96.0 | Jan 12, 2022 | Jan 11, 2022 |
| Mfsa2022 02 | — | Upgrade to Mozilla Firefox ESR version 91.5Upgrade to the latest version of Mozilla Firefox | Jan 12, 2022 | Jan 11, 2022 |
| Mozilla Thunderbird | — | Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 91.5 | Jan 12, 2022 | Jan 11, 2022 |
| Oracle_linux | — | Upgrade thunderbirdUpgrade firefox | Nov 23, 2022 | Jan 11, 2022 |
| Redhat_linux | — | Upgrade firefox-debugsourceNo solution existsUpgrade thunderbird-debugsourceUpgrade firefox-debuginfoUpgrade firefoxUpgrade thunderbirdUpgrade thunderbird-debuginfo | Jan 14, 2022 | Jan 12, 2022 |
| Rocky_linux | — | Upgrade firefox-debuginfoUpgrade firefoxUpgrade thunderbird-debuginfoUpgrade thunderbird-debugsourceUpgrade firefox-debugsourceUpgrade thunderbird | Mar 12, 2024 | Dec 22, 2022 |
| Suse | — | Upgrade MozillaFirefox-translations-commonUpgrade MozillaThunderbirdUpgrade MozillaFirefoxUpgrade MozillaFirefox-develUpgrade MozillaFirefox-translations-otherUpgrade MozillaThunderbird-translations-commonUpgrade MozillaThunderbird-translations-otherUpgrade mozillafirefox-branding-upstream | Feb 12, 2022 | Jan 18, 2022 |
| Ubuntu | — | Upgrade thunderbirdUpgrade libnss3Upgrade libnss3 (Ubuntu Pro)Upgrade firefox | Mar 22, 2023 | Dec 22, 2022 |
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