In certain cases, SNI could have been sent unencrypted even when encrypted DNS was enabled. This vulnerability was fixed in Firefox 139 and Thunderbird 139.
CVSS Details
- CVSS 3.1 Base Score: 7.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Freebsd | freebsd-upgrade-package-firefox | May 31, 2025 | May 30, 2025 | |
| Mfsa2025 42 | mozilla-firefox-upgrade-139_0 | May 28, 2025 | May 27, 2025 | |
| Mozilla Thunderbird | mozilla-thunderbird-upgrade-139_0 | May 28, 2025 | May 27, 2025 | |
| Redhat_linux | — | no-fix-redhat-rpm-package | Jul 9, 2025 | May 27, 2025 |
| Ubuntu | ubuntu-upgrade-thunderbird | Jun 26, 2025 | May 27, 2025 |
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