Memory safety bugs present in Firefox 133 and Thunderbird 133. 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 134 and Thunderbird 134.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Freebsd | — | Upgrade thunderbirdUpgrade firefoxUpgrade librewolf | Apr 6, 2025 | Apr 4, 2025 |
| Gentoo Linux | — | Upgrade www-client/firefox.Upgrade www-client/firefox-bin. | Jan 24, 2025 | Jan 7, 2025 |
| Mfsa2025 01 | — | Upgrade to Mozilla Firefox version 134.0Upgrade to the latest version of Mozilla Firefox | Jan 8, 2025 | Jan 7, 2025 |
| Mozilla Thunderbird | — | Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 134.0 | Jan 10, 2025 | Jan 7, 2025 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Jan 7, 2025 |
| Ubuntu | — | Upgrade thunderbirdUpgrade firefox | Jan 10, 2025 | Jan 7, 2025 |
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