If a user saved a response from the Network tab in Devtools using the Save As context menu option, that file may not have been saved with the `.download` file extension. This could have led to the user inadvertently running a malicious executable. 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 the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox version 140.0 | 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 mozillafirefox-branding-upstreamUpgrade libpipewire-0_3-0Upgrade MozillaThunderbird-translations-commonUpgrade gstreamer-plugin-pipewireUpgrade pipewire-spa-toolsUpgrade xdg-desktop-portal-langUpgrade MozillaThunderbird-translations-otherUpgrade xdg-desktop-portal-develUpgrade MozillaThunderbirdUpgrade MozillaFirefox-translations-otherUpgrade pipewire-toolsUpgrade pipewireUpgrade MozillaFirefoxUpgrade mozillafirefox-branding-sleUpgrade xdg-desktop-portalUpgrade pipewire-modulesUpgrade pipewire-spa-plugins-0_2Upgrade pipewire-langUpgrade MozillaFirefox-develUpgrade MozillaFirefox-translations-commonUpgrade pipewire-modules-0_3 | Jul 22, 2025 | Jun 24, 2025 |
| Ubuntu | — | Upgrade thunderbird | Jun 26, 2025 | Jun 24, 2025 |
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