CVE-2025-48556: Android Framework Base NotificationChannel Desynchronization Vulnerability
Summary
CVE-2025-48556: In multiple methods of NotificationChannel.java, there is a possible desynchronization from persistence due to improper input validation. Affects platform/frameworks/base across 3 version ranges.
>= 15:0, < 15:2025-09-01
>= 16:0, < 16:2025-09-01
>= 16-next:0, < 16-next:2025-09-01
Fixed in 16-next:2025-09-01. How to fix ↓
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Background
The Android Framework Base package is a core component of the Android operating system, responsible for providing essential functionalities and APIs for application development. It includes various classes and methods that facilitate app notifications, among other features. The NotificationChannel class specifically manages notification channels, allowing developers to customize notification behaviors for their applications. This package is critical for ensuring that notifications are delivered and displayed correctly to users.
Vulnerability Detail
In multiple methods of NotificationChannel.java, there is a possible desynchronization from persistence due to improper input validation. This vulnerability can lead to local escalation of privilege, allowing an attacker to gain unauthorized access to certain functionalities without requiring additional execution privileges. User interaction is necessary for exploitation, making it a potential risk in environments where users may be tricked into executing malicious actions.
How To Fix
Minimum fixed version
16-next:2025-09-01
This is the first release that contains the fix.
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Workaround
As a temporary workaround, ensure that user input is thoroughly validated before processing it in the NotificationChannel methods. Implement additional checks to prevent unauthorized access and desynchronization issues.
Conclusion
CVE-2025-48556 represents a significant vulnerability within the Android Framework Base package, specifically affecting the NotificationChannel class. It is crucial for developers to apply the necessary patches and implement workarounds to protect their applications from potential exploitation.
See every vulnerability recorded for platform/frameworks/base →
FAQ
CVE-2025-48556 is a vulnerability in the Android Framework Base package that allows for local escalation of privilege due to improper input validation in the NotificationChannel class.
You can use Vulert, which monitors and alerts in real-time for open-source vulnerabilities. Check your application against CVE-2025-48556 using the Vulert playground at Vulert Scanner without needing to sign up.
The vulnerability can lead to unauthorized access to certain functionalities within the application, potentially compromising user data and application integrity.
Yes, user interaction is necessary for the exploitation of this vulnerability, as an attacker may need to trick the user into executing malicious actions.
If immediate updates are not possible, implement input validation and additional security checks as a temporary workaround to mitigate the risks associated with this vulnerability.
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