cvedb.io
CVE-2025-5270
HIGH · CVSS 7.5
EPSS exploitation probability: 0%
Published 2025-05-27T13:15:22.823 · Last modified 2026-06-17T09:47:35.220

Summary

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

mozilla — firefox

Does this affect you?

Add your gear to cvedb and we'll alert you only when mozilla ships something exploited.

Check my exposure →

References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.