CVE-2025-5270

HighCVSS 7.5/10Last modified Sep 30, 2026

Description

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-319

Affected software

No affected versions have been published.

Timeline

Published: May 27, 2025
Last modified: Sep 30, 2026
NVD status: Modified

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