high7.5
CVE-2025-5270
In certain cases, SNI could have been sent unencrypted even when encrypted DNS was enabled.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mozilla | Firefox | before 139.0 |