CVE-2023-25743: Mozilla Firefox Focus

High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days.

A lack of in app notification for entering fullscreen mode could have lead to a malicious website spoofing browser chrome.<br>*This bug only affects Firefox Focus. Other versions of Firefox are unaffected.*. This vulnerability affects Firefox < 110 and Firefox ESR < 102.8.

Affected products

• Mozilla Firefox Focus: affected versions not specified

Published 2023-06-02. Last modified 2026-06-17.