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Memory safety bugs present in Firefox 136 and Thunderbird 136. 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 137 and Thunderbird 137.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Freebsd | — | Upgrade thunderbirdUpgrade librewolfUpgrade firefox | Apr 9, 2025 | Apr 7, 2025 |
| Gentoo Linux | — | Upgrade www-client/firefox-bin.Upgrade dev-lang/spidermonkey.Upgrade www-client/firefox.Upgrade mail-client/thunderbird-bin.Upgrade mail-client/thunderbird. | May 13, 2025 | Apr 1, 2025 |
| Mfsa2025 20 | — | Upgrade to Mozilla Firefox version 137.0Upgrade to the latest version of Mozilla Firefox | Apr 2, 2025 | Apr 1, 2025 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 137.0Upgrade to the latest version of Mozilla Thunderbird | Apr 2, 2025 | Apr 1, 2025 |
| Ubuntu | — | Upgrade thunderbird | Jun 26, 2025 | Apr 1, 2025 |
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