Memory safety bugs present in Thunderbird ESR 140.10.0 and Thunderbird 150.0.0. 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 150.0.1, Firefox ESR 140.10.1, Firefox ESR 115.35.1, Thunderbird 150.0.1, and Thunderbird 140.10.1.
CVSS Details
- CVSS 3.1 Base Score: 7.3
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade thunderbirdUpgrade firefox-x11Upgrade firefox | May 24, 2026 | May 20, 2026 |
| Amazon Linux Ami 2 | — | Upgrade thunderbirdUpgrade firefox | May 20, 2026 | May 20, 2026 |
| Debian | — | Upgrade firefox-esrUpgrade thunderbird | May 3, 2026 | May 3, 2026 |
| Freebsd | — | Upgrade firefoxUpgrade firefox-esr | Apr 30, 2026 | Apr 29, 2026 |
| Mfsa2026 35 | — | Upgrade to Mozilla Firefox version 150.0.1Upgrade to the latest version of Mozilla Firefox | Apr 28, 2026 | Apr 28, 2026 |
| Mfsa2026 36 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 140.10.1 | Apr 28, 2026 | Apr 28, 2026 |
| Mfsa2026 37 | — | Upgrade to Mozilla Firefox ESR version 115.35.1Upgrade to the latest version of Mozilla Firefox | Apr 28, 2026 | Apr 28, 2026 |
| Mozilla Thunderbird | — | Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 140.10.1 | May 3, 2026 | Apr 30, 2026 |
| Oracle_linux | — | Upgrade thunderbirdUpgrade firefox | May 28, 2026 | Apr 28, 2026 |
| Redhat_linux | — | Upgrade firefox-x11No solution existsUpgrade thunderbird-debugsourceUpgrade firefoxUpgrade thunderbirdUpgrade firefox-debugsourceUpgrade thunderbird-debuginfoUpgrade firefox-debuginfo | May 20, 2026 | Apr 28, 2026 |
| Rocky_linux | — | Upgrade thunderbirdUpgrade thunderbird-debugsourceUpgrade thunderbird-debuginfoUpgrade firefox-debuginfoUpgrade firefox-debugsourceUpgrade firefox-x11Upgrade firefox | May 25, 2026 | May 23, 2026 |
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