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How the CVE Works
This vulnerability is a classic confused deputy attack within the Android operating system. A malicious application, with limited permissions, can manipulate a privileged system component (the deputy) into performing unauthorized actions on its behalf. The core flaw exists in multiple locations where the system’s audio management services handle requests across different user profiles.
The attack exploits improper access controls in inter-process communication (IPC) mechanisms, likely involving Intents, Binders, or file descriptors related to audio files. By crafting a specific request, the malicious app tricks a higher-privileged system service into accessing and leaking audio files from a separate, protected user profile (such as a work profile) to the attacker’s profile. No user interaction is required for this exploit to occur.
The system service, acting with elevated privileges, fails to correctly validate the caller’s identity and the intended target profile when processing the request. This allows the malicious app to bypass standard Android sandboxing and profile isolation features. The successful exploit results in local information disclosure and can be combined with other flaws to achieve a full escalation of privilege from a non-privileged local context.
DailyCVE Form
Platform: Android
Version: Multiple
Vulnerability: Confused Deputy
Severity: Critical
date: 2025-12-08
Prediction: 2026-01-15
What Undercode Say:
Analytics:
`adb logcat | grep -E “(audio|profile|deputy|AVC)”`
`dumpsys package com.malicious.app | grep userId`
Review of `AudioService.java` and `MediaProvider` intent handlers.
`strace -p -e trace=file`
How Exploit:
- Malicious app crafts a malicious Intent targeting a system audio service.
- The Intent contains manipulated extras or URIs designed to cross profile boundaries.
- The privileged system service receives and processes the request without validating the caller’s right to access the target profile’s files.
- The service performs the file operation, leaking audio file descriptors or content back to the attacker’s app sandbox.
Protection from this CVE:
Apply the official Android security patch from Google that addresses CVE-2025-22420. Restrict installation of apps from unknown sources. Use Android’s work profile feature to maintain stronger isolation for sensitive data.
Impact:
Local escalation of privilege leading to unauthorized access to confidential audio data from other user profiles. Potential for further system compromise.
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Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
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