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 firefoxUpgrade thunderbirdUpgrade thunderbird-debuginfoUpgrade firefox-debuginfo | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade firefox-debugsourceUpgrade firefox-debuginfoUpgrade firefox | Aug 19, 2025 | Jul 22, 2025 |
| Debian | — | Upgrade firefox-esrUpgrade thunderbird | Jul 24, 2025 | Jul 22, 2025 |
| Freebsd | — | Upgrade thunderbirdUpgrade firefoxUpgrade thunderbird-esrUpgrade firefox-esr | Jul 25, 2025 | Jul 24, 2025 |
| Mfsa2025 56 | — | Upgrade to Mozilla Firefox version 141.0 | Jul 23, 2025 | Jul 22, 2025 |
| Mfsa2025 57 | — | Upgrade to Mozilla Firefox ESR version 115.26 | Jul 23, 2025 | Jul 22, 2025 |
| Mfsa2025 58 | — | Upgrade to Mozilla Firefox ESR version 128.13 | Jul 23, 2025 | Jul 22, 2025 |
| Mfsa2025 59 | — | Upgrade to Mozilla Firefox ESR version 140.1 | Jul 23, 2025 | Jul 22, 2025 |
| Mozilla Thunderbird | — | Upgrade 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 firefox-x11Upgrade firefoxUpgrade thunderbirdUpgrade firefox-debuginfoUpgrade thunderbird-debuginfoNo solution existsUpgrade thunderbird-debugsourceUpgrade firefox-debugsource | Jul 25, 2025 | Jul 22, 2025 |
| Rocky_linux | — | Upgrade firefox-debugsourceUpgrade thunderbird-debugsourceUpgrade thunderbird-debuginfoUpgrade firefox-debuginfoUpgrade firefox-x11Upgrade firefoxUpgrade thunderbird | Feb 5, 2026 | Sep 8, 2025 |
| Suse | — | Upgrade libpipewire-0_3-0Upgrade mozillafirefox-translations-commonUpgrade mozillafirefox-develUpgrade mozillafirefox-translations-otherUpgrade mozillathunderbirdUpgrade mozillathunderbird-translations-commonUpgrade mozillathunderbird-translations-otherUpgrade mozillafirefoxUpgrade mozillafirefox-branding-sleUpgrade gstreamer-plugin-pipewireUpgrade pipewire-modulesUpgrade pipewire-spa-plugins-0_2Upgrade mozillafirefox-branding-upstreamUpgrade xdg-desktop-portal-langUpgrade xdg-desktop-portalUpgrade xdg-desktop-portal-develUpgrade pipewire-langUpgrade pipewire-modules-0_3Upgrade pipewire-toolsUpgrade pipewireUpgrade pipewire-spa-tools | Dec 5, 2025 | Jul 26, 2025 |
| Ubuntu | — | Upgrade thunderbird | Jul 24, 2025 | Jul 22, 2025 |
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