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Integer overflow in the Libraries component in NSS. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, Thunderbird 140.8, and Firefox ESR 115.35.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade thunderbirdUpgrade firefoxUpgrade firefox-x11 | Feb 27, 2026 | Feb 25, 2026 |
| Amazon Linux Ami 2 | — | Upgrade firefoxUpgrade thunderbird | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade firefox-debugsourceUpgrade firefoxUpgrade firefox-debuginfo | Mar 27, 2026 | Feb 24, 2026 |
| Debian | — | Upgrade firefox-esrUpgrade thunderbirdUpgrade nss | Feb 27, 2026 | Feb 27, 2026 |
| Freebsd | — | Upgrade thunderbirdUpgrade firefoxUpgrade firefox-esr | Apr 23, 2026 | Apr 21, 2026 |
| Mfsa2026 13 | — | Upgrade to Mozilla Firefox version 148.0 | Feb 25, 2026 | Feb 24, 2026 |
| Mfsa2026 15 | — | Upgrade to Mozilla Firefox ESR version 140.8 | Feb 25, 2026 | Feb 24, 2026 |
| Mfsa2026 31 | — | Upgrade to Mozilla Firefox ESR version 115.35Upgrade to the latest version of Mozilla Firefox | Apr 23, 2026 | Apr 21, 2026 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 140.8Upgrade to the latest version of Mozilla Thunderbird | Feb 25, 2026 | Feb 24, 2026 |
| Oracle_linux | — | Upgrade firefoxUpgrade thunderbirdUpgrade firefox-x11 | Feb 27, 2026 | Feb 24, 2026 |
| Redhat_linux | — | Upgrade firefox-debugsourceNo solution existsUpgrade firefox-x11Upgrade thunderbird-debuginfoUpgrade thunderbirdUpgrade firefox-debuginfoUpgrade thunderbird-debugsourceUpgrade firefox | Feb 26, 2026 | Feb 24, 2026 |
| Rocky_linux | — | Upgrade firefoxUpgrade firefox-x11Upgrade thunderbirdUpgrade thunderbird-debuginfoUpgrade firefox-debuginfoUpgrade thunderbird-debugsourceUpgrade firefox-debugsource | Mar 2, 2026 | Feb 26, 2026 |
| Suse | — | Upgrade libfreebl3Upgrade mozilla-nss-sysinit-32bitUpgrade mozilla-nss-certs-32bitUpgrade mozilla-nss-32bitUpgrade mozilla-nssUpgrade MozillaFirefox-develUpgrade mozilla-nss-develUpgrade mozilla-nss-certsUpgrade MozillaThunderbird-translations-otherUpgrade libfreebl3-32bitUpgrade mozilla-nss-sysinitUpgrade libsoftokn3-32bitUpgrade MozillaThunderbird-translations-commonUpgrade MozillaFirefoxUpgrade libsoftokn3Upgrade MozillaThunderbird-openpgp-librnpUpgrade MozillaThunderbirdUpgrade mozilla-nss-toolsUpgrade MozillaFirefox-translations-commonUpgrade mozillafirefox-branding-upstreamUpgrade MozillaFirefox-translations-other | Mar 10, 2026 | Feb 26, 2026 |
| Ubuntu | — | Upgrade libnss3 (Ubuntu Pro)Upgrade libnss3 | Mar 9, 2026 | Mar 4, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Feb 24, 2026 |
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