CVE-2025-6428

MEDIUM 4.3

Firefox for Android opened URLs specified in a link querystring parameter

CVSS Score

4.3

EPSS Score

0.0%

EPSS Percentile

0th

When a URL was provided in a link querystring parameter, Firefox for Android would follow that URL instead of the correct URL, potentially leading to phishing attacks. *This bug only affects Firefox for Android. Other versions of Firefox are unaffected.*. This vulnerability was fixed in Firefox 140.

Vendor	mozilla
Product	firefox
Ecosystems	Browser JavaScript
Industries	Technology
Published	Jun 24, 2025
Last Updated	Apr 13, 2026

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Affected Versions

Mozilla / Firefox

All versions affected

References

NVD ↗ CVE.org ↗ EPSS Data ↗

bugzilla.mozilla.org: https://bugzilla.mozilla.org/show_bug.cgi?id=1970151 mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-51/

Credits

Raul Bucata