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CVE-2025-1939: Android apps can load web pages using the Custom Tabs feature. This feature supports a transition animation that could have been used to trick a...

Description

Android apps can load web pages using the Custom Tabs feature. This feature supports a transition animation that could have been used to trick a user into granting sensitive permissions by hiding what the user was actually clicking. This vulnerability affects Firefox < 136.

Classification

CVE ID: CVE-2025-1939

Problem Types

Tapjacking in Android Custom Tabs using transition animations

Affected Products

Vendor: Mozilla

Product: Firefox

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.01% (probability of being exploited)

EPSS Percentile: 0.4% (scored less or equal to compared to others)

EPSS Date: 2025-04-02 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-1939
https://bugzilla.mozilla.org/show_bug.cgi?id=1928334
https://www.mozilla.org/security/advisories/mfsa2025-14/

Timeline