Memory safety bugs present in Firefox 135 and Thunderbird 135. 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 136 and Thunderbird 136.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Freebsd | — | Upgrade librewolfUpgrade thunderbirdUpgrade firefox | Apr 5, 2025 | Apr 3, 2025 |
| Gentoo Linux | — | Upgrade www-client/firefox-bin.Upgrade www-client/firefox. | May 13, 2025 | Mar 4, 2025 |
| Mfsa2025 14 | — | Upgrade to Mozilla Firefox version 136.0Upgrade to the latest version of Mozilla Firefox | Mar 5, 2025 | Mar 4, 2025 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 136.0Upgrade to the latest version of Mozilla Thunderbird | Mar 5, 2025 | Mar 4, 2025 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Mar 4, 2025 |
| Ubuntu | — | Upgrade thunderbird | Mar 19, 2025 | Mar 4, 2025 |
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