Incorrect boundary conditions in the JavaScript: GC component. This vulnerability was fixed in Firefox 143, Firefox ESR 140.3, Thunderbird 143, and Thunderbird 140.3.
CVSS Details
- CVSS 3.1 Base Score: 6.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade thunderbirdUpgrade firefox-x11Upgrade firefox | Sep 29, 2025 | Sep 22, 2025 |
| Amazon Linux Ami 2 | — | Upgrade thunderbirdUpgrade firefox | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade firefoxUpgrade firefox-debuginfoUpgrade firefox-debugsource | Sep 30, 2025 | Sep 16, 2025 |
| Debian | — | Upgrade firefox-esrUpgrade thunderbird | Sep 22, 2025 | Sep 22, 2025 |
| Freebsd | — | Upgrade firefox-esrUpgrade thunderbirdUpgrade firefox | Dec 10, 2025 | Nov 2, 2025 |
| Mfsa2025 73 | — | Upgrade to Mozilla Firefox version 143.0 | Sep 17, 2025 | Sep 16, 2025 |
| Mfsa2025 75 | — | Upgrade to Mozilla Firefox ESR version 140.3 | Sep 17, 2025 | Sep 16, 2025 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 140.3 | Sep 17, 2025 | Sep 16, 2025 |
| Oracle_linux | — | Upgrade firefox-x11Upgrade firefoxUpgrade thunderbird | Sep 22, 2025 | Sep 16, 2025 |
| Redhat_linux | — | Upgrade thunderbird-debuginfoUpgrade firefox-debuginfoUpgrade thunderbird-debugsourceUpgrade firefoxUpgrade firefox-debugsourceUpgrade firefox-x11No solution existsUpgrade thunderbird | Sep 19, 2025 | Sep 16, 2025 |
| Rocky_linux | — | Upgrade firefox-debugsourceUpgrade firefox-debuginfoUpgrade thunderbird-debuginfoUpgrade thunderbirdUpgrade thunderbird-debugsourceUpgrade firefox-x11Upgrade firefox | Feb 5, 2026 | Oct 3, 2025 |
| Suse | — | Upgrade MozillaThunderbird-translations-commonUpgrade MozillaFirefox-translations-otherUpgrade MozillaThunderbird-translations-otherUpgrade mozillafirefox-branding-upstreamUpgrade MozillaThunderbirdUpgrade MozillaFirefox-translations-commonUpgrade MozillaFirefoxUpgrade MozillaThunderbird-openpgp-librnpUpgrade MozillaFirefox-devel | Dec 5, 2025 | Sep 20, 2025 |
| Ubuntu | — | Upgrade thunderbird | Feb 4, 2026 | Feb 2, 2026 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub