A mechanism to bypass file system access protections in the sandbox to use the file picker to access different files than those selected in the file picker through the use of relative paths. This allows for read only access to the local file system. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 52.1, and Firefox < 53.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Jun 11, 2018 |
| Centos_linux | — | Upgrade firefoxUpgrade firefox-debuginfoUpgrade thunderbird-debuginfoUpgrade thunderbird | Apr 21, 2017 | Apr 20, 2017 |
| Freebsd | — | Upgrade linux-firefoxUpgrade seamonkeyUpgrade libxulUpgrade linux-seamonkeyUpgrade linux-thunderbirdUpgrade firefoxUpgrade firefox-esrUpgrade thunderbird | Apr 20, 2017 | Apr 19, 2017 |
| Mfsa2017 10 | — | Upgrade to Mozilla Firefox version 53.0Upgrade to the latest version of Mozilla Firefox | Jul 12, 2018 | Jun 11, 2018 |
| Mfsa2017 12 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 52.1 | Apr 20, 2017 | Apr 19, 2017 |
| Mozilla Thunderbird | — | Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 52.1 | May 2, 2017 | Apr 30, 2017 |
| Oracle Solaris | — | Upgrade entire/ to version 11.4-11.4.0.0.1.15.0 on Solaris 11.4 | Oct 19, 2018 | Jun 11, 2018 |
| Oracle_linux | — | Upgrade firefoxUpgrade thunderbird | Apr 20, 2017 | Apr 19, 2017 |
| Redhat_linux | — | Upgrade firefox-debuginfoUpgrade thunderbird-debuginfoNo solution existsUpgrade firefoxUpgrade thunderbird | Apr 20, 2017 | Apr 20, 2017 |
| Suse | — | Upgrade MozillaThunderbird-translations-commonUpgrade MozillaThunderbird-translations-otherUpgrade MozillaFirefox-develUpgrade MozillaThunderbird-develUpgrade mozillafirefox-branding-sleUpgrade MozillaThunderbird-buildsymbolsUpgrade MozillaFirefox-translationsUpgrade MozillaThunderbird-debuginfoUpgrade MozillaThunderbird-debugsourceUpgrade MozillaFirefoxUpgrade MozillaThunderbird | May 6, 2017 | Apr 20, 2017 |
| Ubuntu | — | Upgrade thunderbirdUpgrade firefox | Apr 21, 2017 | Apr 20, 2017 |
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub