AUGUST 4, 2026
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Case File

CVE-2025-5270

HIGH · CVSS 7.5 EPSS 0.25%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2025-05-27 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. It affects Firefox.

CVE
CVE-2025-5270
Severity
HIGH
CVSS
7.5
EPSS
0.25%
Firefox

Original NVD 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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)