CVE-2025-5270

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-5270
In certain cases, SNI could have been sent unencrypted even when encrypted DNS was enabled. This vulnerability affects Firefox < 139 and Thunderbird < 139.
CVSS

No CVSS.

References
Link Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1910298 Permissions Required
https://www.mozilla.org/security/advisories/mfsa2025-42/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-45/
Configurations

Configuration 1 (hide)

cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
History

11 Jun 2025, 12:15

Type Values Removed Values Added
Summary In certain cases, SNI could have been sent unencrypted even when encrypted DNS was enabled. This vulnerability affects Firefox < 139. In certain cases, SNI could have been sent unencrypted even when encrypted DNS was enabled. This vulnerability affects Firefox < 139 and Thunderbird < 139.
References
  • () https://www.mozilla.org/security/advisories/mfsa2025-45/ -

28 May 2025, 18:36

Type Values Removed Values Added
First Time Mozilla firefox
Mozilla
CPE cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
References () https://bugzilla.mozilla.org/show_bug.cgi?id=1910298 - () https://bugzilla.mozilla.org/show_bug.cgi?id=1910298 - Permissions Required
References () https://www.mozilla.org/security/advisories/mfsa2025-42/ - () https://www.mozilla.org/security/advisories/mfsa2025-42/ - Vendor Advisory

27 May 2025, 13:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-05-27 13:15

Updated : 2025-06-11 12:15

NVD link : CVE-2025-5270

Mitre link : CVE-2025-5270

JSON object : View

Products Affected

mozilla

  • firefox
CWE

No CWE.