Memory safety bugs present in Firefox 139 and Thunderbird 139. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 140 and Thunderbird 140.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Freebsd | — | Upgrade firefox | Jul 5, 2025 | Jul 4, 2025 |
| Mfsa2025 51 | — | Upgrade to Mozilla Firefox version 140.0Upgrade to the latest version of Mozilla Firefox | Jun 25, 2025 | Jun 24, 2025 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 140.0Upgrade to the latest version of Mozilla Thunderbird | Jul 3, 2025 | Jun 24, 2025 |
| Suse | — | Upgrade xdg-desktop-portal-develUpgrade pipewire-toolsUpgrade mozillafirefox-branding-sleUpgrade MozillaFirefox-develUpgrade pipewireUpgrade MozillaThunderbirdUpgrade MozillaFirefoxUpgrade pipewire-langUpgrade pipewire-modulesUpgrade MozillaFirefox-translations-otherUpgrade MozillaThunderbird-translations-otherUpgrade xdg-desktop-portalUpgrade MozillaFirefox-translations-commonUpgrade pipewire-modules-0_3Upgrade mozillafirefox-branding-upstreamUpgrade pipewire-spa-toolsUpgrade pipewire-spa-plugins-0_2Upgrade gstreamer-plugin-pipewireUpgrade xdg-desktop-portal-langUpgrade MozillaThunderbird-translations-commonUpgrade libpipewire-0_3-0 | Jul 22, 2025 | Jun 24, 2025 |
| Ubuntu | — | Upgrade thunderbird | Jun 26, 2025 | Jun 24, 2025 |
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