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The CVE-2025-66330 vulnerability is a local app lock bypass in Huawei’s file management application. The flaw resides in improper validation of the app’s locked state when handling specific intents or file operations. An attacker with physical access to the device could exploit this by using a malicious application or ADB commands to send crafted requests to the file manager. This could trick the app into performing actions on protected files or directories without presenting the required lock screen (PIN/pattern/password). The vulnerability likely involves a race condition or state management error where the app fails to re-check authorization after certain events, allowing operations to proceed under the assumption the user is authenticated. This bypasses the confidentiality mechanism designed to shield private files.
Platform: Huawei phones
Version: Affected versions
Vulnerability: Lock bypass
Severity: Medium
date: 12/08/2025
Prediction: Patch Q1 2026
What Undercode Say:
Probing app components adb shell pm list packages | grep file adb shell dumpsys package com.huawei.filemanager Checking directory permissions adb shell ls -la /storage/emulated/0/Android/data/com.huawei.filemanager/
How Exploit:
1. Attacker installs a companion app.
- App sends a crafted Intent to the File Manager.
3. Intent triggers a file operation activity.
- The activity fails to validate the app lock state.
5. Protected file access is granted without authentication.
Protection from this CVE:
Apply Huawei security update. Disable unnecessary app permissions. Use device-level encryption. Avoid untrusted app installations.
Impact:
Unauthorized file access. Confidentiality breach. Local information disclosure.
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Sources:
Reported By: nvd.nist.gov
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