Sandbox escape due to incorrect boundary conditions, integer overflow in the XPCOM component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.
CVSS Details
- CVSS 3.1 Base Score: 8.6
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade firefoxUpgrade firefox-x11Upgrade thunderbird | Mar 31, 2026 | Mar 26, 2026 |
| Amazon Linux Ami 2 | — | Upgrade thunderbirdUpgrade firefox | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade firefox-debuginfoUpgrade firefoxUpgrade firefox-debugsource | Apr 14, 2026 | Mar 24, 2026 |
| Debian | — | Upgrade firefox-esrUpgrade thunderbird | Mar 30, 2026 | Mar 30, 2026 |
| Freebsd | — | Upgrade thunderbirdUpgrade firefoxUpgrade firefox-esr | Mar 27, 2026 | Mar 26, 2026 |
| Mfsa2026 20 | — | Upgrade to Mozilla Firefox version 149.0Upgrade to the latest version of Mozilla Firefox | Mar 27, 2026 | Mar 24, 2026 |
| Mfsa2026 21 | — | Upgrade to Mozilla Firefox ESR version 115.34Upgrade to the latest version of Mozilla Firefox | Mar 27, 2026 | Mar 24, 2026 |
| Mfsa2026 22 | — | Upgrade to Mozilla Firefox ESR version 140.9Upgrade to the latest version of Mozilla Firefox | Mar 27, 2026 | Mar 24, 2026 |
| Mozilla Thunderbird | — | Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 140.9 | Mar 27, 2026 | Mar 24, 2026 |
| Oracle_linux | — | Upgrade firefox-x11Upgrade firefoxUpgrade thunderbird | Mar 30, 2026 | Mar 24, 2026 |
| Redhat_linux | — | Upgrade firefox-debugsourceNo solution existsUpgrade thunderbird-debuginfoUpgrade firefox-debuginfoUpgrade firefox-x11Upgrade firefoxUpgrade thunderbird-debugsourceUpgrade thunderbird | Mar 27, 2026 | Mar 24, 2026 |
| Rocky_linux | — | Upgrade firefox-debuginfoUpgrade firefox-debugsourceUpgrade thunderbird-debugsourceUpgrade firefoxUpgrade firefox-x11Upgrade thunderbirdUpgrade thunderbird-debuginfo | Apr 8, 2026 | Apr 7, 2026 |
| Suse | — | Upgrade mozillafirefox-branding-upstreamUpgrade MozillaThunderbird-openpgp-librnpUpgrade MozillaFirefoxUpgrade MozillaThunderbird-translations-commonUpgrade MozillaThunderbirdUpgrade MozillaFirefox-translations-otherUpgrade MozillaFirefox-develUpgrade MozillaFirefox-translations-commonUpgrade MozillaThunderbird-translations-other | Mar 30, 2026 | Mar 27, 2026 |
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