Improper Restriction of Rendered UI Layers or Frames in Firefox for Android - CVE-2025-1939
Published: March 5, 2025
Vulnerability identifier: #VU105321
CSH Severity: High
CVSS v4: 8.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-1939
CWE-ID: CWE-1021
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform tapjacking attacks.
The vulnerability exists due to the way Android tabs 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.
Affected software
Firefox for Android
How to mitigate CVE-2025-1939
Install updates from vendor's website.
Firefox for Android - update to 136.0