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.

INFO

Published Date :

2025-05-27T12:29:28.612Z

Last Modified :

2026-04-13T14:30:47.210Z

Source :

mozilla
AFFECTED PRODUCTS

The following products are affected by CVE-2025-5270 vulnerability.

Vendors Products
Mozilla
  • Firefox
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-5270.

URL Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1910298 cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-5270 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-5270 cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-42/ cve-icon cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-45/ cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
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Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact