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If Thunderbird is configured to use STARTTLS for an IMAP server, and the server sends a PREAUTH response, then Thunderbird will continue with an unencrypted connection, causing email data to be sent without protection. This vulnerability affects Thunderbird < 68.9.0.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade thunderbird | Aug 22, 2024 | Jul 9, 2020 |
| Amazon Linux Ami 2 | — | Upgrade thunderbirdUpgrade thunderbird-debuginfo | Jul 21, 2020 | Jul 9, 2020 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Jul 9, 2020 |
| Centos_linux | — | Upgrade thunderbird-debugsourceUpgrade thunderbird-debuginfoUpgrade thunderbird | Jun 23, 2020 | Jun 18, 2020 |
| Debian | — | Upgrade thunderbird | Jun 15, 2020 | Jun 15, 2020 |
| Gentoo Linux | — | Upgrade mail-client/thunderbird.Upgrade mail-client/thunderbird-bin. | Jun 16, 2020 | Jun 15, 2020 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 68.9Upgrade to the latest version of Mozilla Thunderbird | Jun 5, 2020 | Jun 2, 2020 |
| Oracle Solaris | — | Upgrade mail/thunderbird to version 68.9.0-11.4.23.0.1.69.3 on Solaris 11.4Upgrade mail/thunderbird/plugin/thunderbird-lightning to version 68.9.0-11.4.23.0.1.69.3 on Solaris 11.4 | Jan 19, 2021 | Jul 9, 2020 |
| Oracle_linux | — | Upgrade thunderbird | Jun 21, 2020 | Jun 2, 2020 |
| Redhat_linux | — | Upgrade thunderbirdUpgrade thunderbird-debuginfoNo solution existsUpgrade thunderbird-debugsource | Jun 23, 2020 | Jun 18, 2020 |
| Suse | — | Upgrade MozillaThunderbird-translations-commonUpgrade MozillaThunderbirdUpgrade MozillaThunderbird-translations-other | Jun 13, 2020 | Jun 10, 2020 |
| Ubuntu | — | Upgrade thunderbird | Aug 5, 2020 | Jun 10, 2020 |
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