Memory safety bug present in Firefox 143 and Thunderbird 143. This bug showed evidence of memory corruption and we presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 144 and Thunderbird 144.
CVSS Details
- CVSS 3.1 Base Score: 9.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Freebsd | — | Upgrade thunderbirdUpgrade firefox | Dec 10, 2025 | Oct 17, 2025 |
| Mfsa2025 81 | — | Upgrade to Mozilla Firefox version 144.0 | Oct 15, 2025 | Oct 14, 2025 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 144.0 | Oct 15, 2025 | Oct 14, 2025 |
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