CVE-2025-48645: Google Android Privilege Escalation Flaw

CVE-2025-48645 Overview

A local privilege escalation vulnerability exists in the loadDescription method of DeviceAdminInfo.java within Google Android. The vulnerability stems from improper input validation that allows the creation of a persistent package, enabling attackers to escalate privileges locally without requiring any user interaction or additional execution privileges.

Critical Impact

Local attackers can exploit improper input validation to achieve privilege escalation, potentially gaining elevated system access on affected Android devices without user interaction.

Affected Products

• Google Android 14.0
• Google Android 15.0
• Google Android 16.0 (including QPR2 Beta 1, Beta 2, and Beta 3)

Discovery Timeline

• 2026-03-02 - CVE-2025-48645 published to NVD
• 2026-03-03 - Last updated in NVD database

Technical Details for CVE-2025-48645

Vulnerability Analysis

The vulnerability resides in the loadDescription method of the DeviceAdminInfo.java class within the Android framework. This component handles device administration information and is responsible for parsing and loading descriptions from device admin packages. The flaw allows an attacker to create a persistent package through improper input validation, which can then be leveraged for local privilege escalation.

The attack requires local access to the device but does not necessitate any user interaction or additional execution privileges. Once exploited, an attacker can achieve high impact across confidentiality, integrity, and availability of the affected system. This is classified as an Improper Privilege Management vulnerability (CWE-269).

Root Cause

The root cause of CVE-2025-48645 is insufficient input validation in the loadDescription method of DeviceAdminInfo.java. The method fails to properly sanitize or validate input parameters, allowing malformed or malicious data to persist as a package. This improper input validation enables the creation of persistent packages that can be exploited to escalate privileges on the local system.

Attack Vector

The attack vector for this vulnerability is local, meaning an attacker must have some level of access to the Android device to exploit it. The exploitation mechanism involves:

1. An attacker with local access crafts a malicious input that bypasses the insufficient validation in loadDescription
2. The malicious input results in a persistent package being created
3. The persistent package enables privilege escalation without requiring additional execution privileges
4. No user interaction is required, making the attack silent and effective

The vulnerability manifests in the device administration framework's handling of package descriptions. The attacker exploits the improper input validation to inject malicious content that persists and grants elevated privileges. For detailed technical information, refer to the Android Security Bulletin March 2026.

Detection Methods for CVE-2025-48645

Indicators of Compromise

• Unexpected device administrator packages appearing on the device that were not explicitly installed by the user
• Anomalous activity in the DeviceAdminInfo class or related device administration APIs
• Persistence of unauthorized packages in device administration contexts
• Unusual privilege escalation attempts originating from local processes

Detection Strategies

• Monitor Android system logs for suspicious activity related to DeviceAdminInfo.java and the loadDescription method
• Implement endpoint detection rules to identify unexpected device administrator package registrations
• Deploy mobile threat defense solutions capable of detecting local privilege escalation attempts
• Audit device administrator lists regularly for unauthorized or suspicious entries

Monitoring Recommendations

• Enable verbose logging for device administration activities on enterprise-managed Android devices
• Configure security alerts for new device administrator registrations
• Implement behavioral analysis to detect anomalous privilege escalation patterns
• Monitor for unusual process behavior following device admin package installations

How to Mitigate CVE-2025-48645

Immediate Actions Required

• Apply the March 2026 Android security patch immediately on all affected devices
• Review and audit existing device administrator packages on managed devices
• Remove any unauthorized or suspicious device administrator applications
• Restrict installation of applications from unknown sources on enterprise devices

Patch Information

Google has addressed this vulnerability in the Android Security Bulletin March 2026. Organizations should ensure all Android devices running versions 14.0, 15.0, and 16.0 are updated to the latest security patch level dated 2026-03-01 or later. Enterprise environments should prioritize patch deployment through mobile device management (MDM) solutions.

Workarounds

• Restrict application installation permissions to prevent unauthorized packages from being installed
• Implement strict device administrator policies through MDM solutions to control which apps can request admin privileges
• Enable Google Play Protect to provide an additional layer of defense against potentially harmful applications
• Consider deploying mobile threat defense solutions for enhanced monitoring until patches can be applied

# Verify Android security patch level via ADB
adb shell getprop ro.build.version.security_patch
# Expected output: 2026-03-01 or later