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Sandbox escape due to incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade firefoxUpgrade thunderbirdUpgrade firefox-x11 | Jan 20, 2026 | Jan 15, 2026 |
| Amazon Linux Ami 2 | — | Upgrade firefoxUpgrade thunderbird | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade firefoxUpgrade firefox-debugsourceUpgrade firefox-debuginfo | Feb 20, 2026 | Jan 13, 2026 |
| Debian | — | Upgrade thunderbirdUpgrade firefox-esr | Jan 19, 2026 | Jan 19, 2026 |
| Freebsd | — | Upgrade firefox-esrUpgrade firefoxUpgrade thunderbird | Jan 27, 2026 | Jan 15, 2026 |
| Mfsa2026 01 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox version 147.0 | Jan 14, 2026 | Jan 13, 2026 |
| Mfsa2026 02 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 115.32 | Jan 14, 2026 | Jan 13, 2026 |
| Mfsa2026 03 | — | Upgrade to Mozilla Firefox ESR version 140.7Upgrade to the latest version of Mozilla Firefox | Jan 14, 2026 | Jan 13, 2026 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 140.7Upgrade to the latest version of Mozilla Thunderbird | Jan 16, 2026 | Jan 13, 2026 |
| Oracle_linux | — | Upgrade firefoxUpgrade thunderbirdUpgrade firefox-x11 | Jan 19, 2026 | Jan 13, 2026 |
| Redhat_linux | — | Upgrade thunderbirdUpgrade thunderbird-debuginfoUpgrade firefox-x11Upgrade firefox-debugsourceUpgrade firefox-debuginfoUpgrade firefoxUpgrade thunderbird-debugsourceNo solution exists | Jan 16, 2026 | Jan 13, 2026 |
| Rocky_linux | — | Upgrade thunderbird-debuginfoUpgrade firefox-debugsourceUpgrade thunderbird-debugsourceUpgrade firefox-debuginfoUpgrade firefox-x11Upgrade firefoxUpgrade thunderbird | Jan 19, 2026 | Jan 16, 2026 |
| Suse | — | Upgrade MozillaFirefox-translations-otherUpgrade MozillaThunderbird-openpgp-librnpUpgrade MozillaThunderbirdUpgrade MozillaThunderbird-translations-otherUpgrade MozillaFirefoxUpgrade MozillaFirefox-develUpgrade MozillaThunderbird-translations-commonUpgrade MozillaFirefox-translations-commonUpgrade mozillafirefox-branding-upstream | Jan 15, 2026 | Jan 15, 2026 |
| Ubuntu | — | Upgrade thunderbird | Feb 4, 2026 | Feb 2, 2026 |
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