CVE-2025-48545
📋 TL;DR
This vulnerability allows a malicious Android app to bypass user ID checks and access privileged system APIs, potentially gaining elevated privileges on the device. It affects Android devices running vulnerable versions, requiring no user interaction for exploitation.
💻 Affected Systems
- Android
📦 What is this software?
Android by Google
Android by Google
Android by Google
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise where an attacker gains system-level privileges, potentially installing persistent malware, accessing sensitive data, or disabling security controls.
Likely Case
Local privilege escalation allowing malicious apps to perform unauthorized actions like accessing protected system resources or user data without permission.
If Mitigated
Limited impact if devices are fully patched and app permissions are properly restricted through security policies.
🎯 Exploit Status
Requires malicious app installation but no user interaction; confused deputy vulnerability in AccountManagerService
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Android Security Update September 2025 or later
Vendor Advisory: https://source.android.com/security/bulletin/2025-09-01
Restart Required: No
Instructions:
1. Apply Android Security Update from September 2025 or later. 2. Update device through Settings > System > System Update. 3. Verify update installation in About Phone > Android version.
🔧 Temporary Workarounds
Restrict app installations
androidOnly install apps from trusted sources like Google Play Store and disable unknown sources
🧯 If You Can't Patch
- Implement mobile device management (MDM) policies to restrict app installations
- Monitor for suspicious app behavior and privilege escalation attempts
🔍 How to Verify
Check if Vulnerable:
Check Android version and security patch level in Settings > About Phone > Android versionCheck Version:
adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify security patch level is September 2025 or later in Settings > About Phone📡 Detection & Monitoring
Log Indicators:
- Unusual AccountManagerService API calls from non-system UIDs
- Privilege escalation attempts in system logs
Network Indicators:
- None - local vulnerability only
SIEM Query:
source="android_system" AND "AccountManagerService" AND "isSystemUid" AND result="success" AND uid!=1000