Vulnerability Database

309,364

Total vulnerabilities in the database

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.

  • Published: May 27, 2025
  • Updated: Nov 16, 2025
  • CVE: CVE-2025-5270
  • Severity: High
  • Exploit:

CVSS v3:

  • Severity: High
  • Score: 7.5
  • AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CWEs:

OWASP TOP 10:

Software From Fixed in
mozilla / firefox - 139.0