Memory safety bugs present in Firefox ESR 115.25, Firefox ESR 128.12, Thunderbird ESR 128.12, Firefox ESR 140.0, Thunderbird ESR 140.0, Firefox 140 and Thunderbird 140. 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 141, Firefox ESR 115.26, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and Thunderbird 140.1.
CVSS Details
- CVSS 3.1 Base Score: 8.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade firefoxUpgrade firefox-x11Upgrade thunderbird | Jul 31, 2025 | Jul 24, 2025 |
| Amazon Linux Ami 2 | — | Upgrade thunderbirdUpgrade firefoxUpgrade firefox-debuginfoUpgrade thunderbird-debuginfo | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade firefoxUpgrade firefox-debugsourceUpgrade firefox-debuginfo | Aug 19, 2025 | Jul 22, 2025 |
| Debian | — | Upgrade thunderbirdUpgrade firefox-esr | Jul 24, 2025 | Jul 22, 2025 |
| Freebsd | — | Upgrade firefoxUpgrade thunderbirdUpgrade firefox-esrUpgrade thunderbird-esr | Jul 25, 2025 | Jul 24, 2025 |
| Mfsa2025 56 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox version 141.0 | Jul 23, 2025 | Jul 22, 2025 |
| Mfsa2025 57 | — | Upgrade to Mozilla Firefox ESR version 115.26Upgrade to the latest version of Mozilla Firefox | Jul 23, 2025 | Jul 22, 2025 |
| Mfsa2025 58 | — | Upgrade to Mozilla Firefox ESR version 128.13Upgrade to the latest version of Mozilla Firefox | Jul 23, 2025 | Jul 22, 2025 |
| Mfsa2025 59 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 140.1 | Jul 23, 2025 | Jul 22, 2025 |
| Mozilla Thunderbird | — | Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 140.1 | Jul 23, 2025 | Jul 22, 2025 |
| Oracle_linux | — | Upgrade thunderbirdUpgrade firefox-x11Upgrade firefox | Jul 28, 2025 | Jul 22, 2025 |
| Redhat_linux | — | Upgrade firefoxUpgrade thunderbirdUpgrade firefox-x11Upgrade firefox-debuginfoUpgrade firefox-debugsourceUpgrade thunderbird-debuginfoNo solution existsUpgrade thunderbird-debugsource | Jul 25, 2025 | Jul 22, 2025 |
| Rocky_linux | — | Upgrade firefoxUpgrade thunderbirdUpgrade thunderbird-debuginfoUpgrade thunderbird-debugsourceUpgrade firefox-debuginfoUpgrade firefox-x11Upgrade firefox-debugsource | Feb 5, 2026 | Sep 8, 2025 |
| Suse | — | Upgrade MozillaFirefox-translations-commonUpgrade MozillaThunderbird-translations-otherUpgrade MozillaFirefox-translations-otherUpgrade MozillaThunderbird-translations-commonUpgrade xdg-desktop-portalUpgrade xdg-desktop-portal-develUpgrade mozillafirefox-branding-upstreamUpgrade MozillaThunderbirdUpgrade pipewire-spa-toolsUpgrade MozillaFirefox-develUpgrade pipewireUpgrade pipewire-langUpgrade pipewire-toolsUpgrade pipewire-modules-0_3Upgrade xdg-desktop-portal-langUpgrade pipewire-spa-plugins-0_2Upgrade MozillaFirefoxUpgrade libpipewire-0_3-0Upgrade gstreamer-plugin-pipewireUpgrade pipewire-modulesUpgrade mozillafirefox-branding-sle | Dec 5, 2025 | Jul 26, 2025 |
| Ubuntu | — | Upgrade thunderbird | Jul 24, 2025 | Jul 22, 2025 |
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