Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2025-0239

When using Alt-Svc, ALPN did not properly validate certificates when the original server is redirecting to an insecure site. This vulnerability was fixed in Firefox 134, Firefox ESR 128.6, Thunderbird 134, and Thunderbird 128.6.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 8.7%
CVSS Severity
CVSS v3 Score 4.0
Products affected by CVE-2025-0239


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