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 thunderbirdUpgrade firefox-x11 | Jul 31, 2025 | Jul 24, 2025 |
| Amazon Linux Ami 2 | — | Upgrade firefox-debuginfoUpgrade thunderbird-debuginfoUpgrade thunderbirdUpgrade firefox | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade firefox-debuginfoUpgrade firefox-debugsourceUpgrade firefox | Aug 19, 2025 | Jul 22, 2025 |
| Debian | — | Upgrade firefox-esrUpgrade thunderbird | Jul 24, 2025 | Jul 22, 2025 |
| Freebsd | — | Upgrade firefox-esrUpgrade thunderbird-esrUpgrade thunderbirdUpgrade firefox | Jul 25, 2025 | Jul 24, 2025 |
| Mfsa2025 56 | — | Upgrade to Mozilla Firefox version 141.0Upgrade to the latest version of Mozilla Firefox | Jul 23, 2025 | Jul 22, 2025 |
| Mfsa2025 57 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 115.26 | Jul 23, 2025 | Jul 22, 2025 |
| Mfsa2025 58 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 128.13 | 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 firefoxUpgrade thunderbirdUpgrade firefox-x11 | Jul 28, 2025 | Jul 22, 2025 |
| Redhat_linux | — | Upgrade firefox-x11Upgrade thunderbirdUpgrade firefoxUpgrade firefox-debuginfoUpgrade firefox-debugsourceUpgrade thunderbird-debuginfoUpgrade thunderbird-debugsourceNo solution exists | Jul 25, 2025 | Jul 22, 2025 |
| Rocky_linux | — | Upgrade firefoxUpgrade thunderbirdUpgrade firefox-debuginfoUpgrade thunderbird-debuginfoUpgrade thunderbird-debugsourceUpgrade firefox-debugsourceUpgrade firefox-x11 | Feb 5, 2026 | Sep 8, 2025 |
| Suse | — | Upgrade mozillafirefox-branding-upstreamUpgrade xdg-desktop-portalUpgrade xdg-desktop-portal-develUpgrade MozillaFirefox-develUpgrade pipewire-langUpgrade MozillaThunderbirdUpgrade pipewire-spa-toolsUpgrade pipewire-modules-0_3Upgrade MozillaFirefox-translations-commonUpgrade pipewire-toolsUpgrade MozillaFirefox-translations-otherUpgrade xdg-desktop-portal-langUpgrade pipewireUpgrade MozillaThunderbird-translations-commonUpgrade MozillaThunderbird-translations-otherUpgrade pipewire-spa-plugins-0_2Upgrade MozillaFirefoxUpgrade gstreamer-plugin-pipewireUpgrade libpipewire-0_3-0Upgrade mozillafirefox-branding-sleUpgrade pipewire-modules | Dec 5, 2025 | Jul 26, 2025 |
| Ubuntu | — | Upgrade thunderbird | Jul 24, 2025 | Jul 22, 2025 |
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