CVE-2025-5270 (GCVE-0-2025-5270)
Vulnerability from cvelistv5
Published
2025-05-27 12:29
Modified
2025-06-11 12:07
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE
  • SNI was sometimes unencrypted
Summary
In certain cases, SNI could have been sent unencrypted even when encrypted DNS was enabled. This vulnerability affects Firefox < 139 and Thunderbird < 139.
References
security@mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=1910298Permissions Required
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2025-42/Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2025-45/
Impacted products
Vendor Product Version
Mozilla Firefox Version: unspecified   < 139
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   Mozilla Thunderbird Version: unspecified   < 139
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