CVE-2025-48605: Google Android Privilege Escalation Flaw

CVE-2025-48605 Overview

CVE-2025-48605 is a privilege escalation vulnerability affecting Google Android's lockscreen implementation. A logic error in multiple functions within KeyguardViewMediator.java allows attackers to bypass the device lockscreen, resulting in local escalation of privilege without requiring any additional execution privileges or user interaction.

Critical Impact

This vulnerability enables complete lockscreen bypass, allowing physical attackers to gain unauthorized access to Android devices without authentication. This exposes all user data, credentials, and sensitive applications to compromise.

Affected Products

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

Discovery Timeline

• 2026-03-02 - CVE-2025-48605 published to NVD
• 2026-03-03 - Last updated in NVD database

Technical Details for CVE-2025-48605

Vulnerability Analysis

This vulnerability resides in KeyguardViewMediator.java, a critical component of the Android framework responsible for managing the device lockscreen. The flaw is classified under CWE-693 (Protection Mechanism Failure), indicating that the security controls meant to enforce device authentication can be circumvented.

The vulnerability allows local privilege escalation without requiring any special permissions or user interaction. An attacker with physical access to a vulnerable device can exploit this flaw to bypass the lockscreen authentication mechanism entirely, gaining full access to the device as if it were unlocked by the legitimate user.

The local attack vector means exploitation requires physical access to the target device, but once exploited, the attacker gains high-impact access to confidentiality, integrity, and availability of data stored on the device.

Root Cause

The root cause is a logic error in the lockscreen state management within KeyguardViewMediator.java. The Android Keyguard is responsible for determining when the device should be locked and enforcing authentication before granting access. Due to flawed logic in the state transition handling, certain sequences of events can cause the Keyguard to incorrectly determine that the device should be unlocked, bypassing the normal authentication flow.

This type of protection mechanism failure typically occurs when edge cases in the lockscreen state machine are not properly handled, allowing attackers to trigger unexpected state transitions that circumvent the intended security controls.

Attack Vector

The attack exploits the local access vector, meaning an adversary requires physical access to the target Android device. Once physical access is obtained, the attacker can trigger the logic error in KeyguardViewMediator.java to bypass the lockscreen without needing the user's PIN, pattern, password, or biometric authentication.

The exploitation does not require any special privileges on the device, nor does it need user interaction. This makes the vulnerability particularly dangerous in scenarios involving lost or stolen devices, as attackers can immediately access all device contents.

For detailed technical information on the vulnerability, refer to the Android Security Bulletin March 2026.

Detection Methods for CVE-2025-48605

Indicators of Compromise

• Unexpected device unlocks without user authentication in system logs
• Anomalous Keyguard state transitions recorded in Android logcat
• Evidence of unauthorized access to protected applications or data
• Unusual activity patterns on devices that were presumed locked

Detection Strategies

• Monitor Android system logs for abnormal Keyguard behavior or state machine errors
• Implement mobile device management (MDM) solutions that can detect unauthorized device access
• Review device access logs for access events that occurred without corresponding authentication events
• Deploy endpoint detection capabilities that can identify exploitation attempts on managed devices

Monitoring Recommendations

• Enable detailed logging on managed Android devices to capture Keyguard events
• Configure alerting for devices that report unexpected unlock events
• Implement device attestation to verify lockscreen integrity on enterprise devices
• Monitor for security patch levels and flag devices running vulnerable Android versions

How to Mitigate CVE-2025-48605

Immediate Actions Required

• Apply the March 2026 Android security patch immediately on all affected devices
• Prioritize patching devices running Android 14.0, 15.0, and 16.0 (including beta versions)
• Enforce physical security controls for devices that cannot be immediately patched
• Review enterprise MDM policies to ensure security updates are deployed promptly

Patch Information

Google has addressed this vulnerability in the Android Security Bulletin March 2026. Organizations should ensure all managed Android devices are updated to security patch level 2026-03-01 or later. Device manufacturers (OEMs) should incorporate these patches into their device-specific updates and distribute them to end users.

Workarounds

• Maintain strict physical security controls for vulnerable devices until patches are applied
• Enable remote wipe capabilities to mitigate risk from lost or stolen devices
• Consider temporarily disabling devices running vulnerable Android versions in high-security environments
• Implement additional authentication layers at the application level for sensitive apps

# Verify Android security patch level via ADB
adb shell getprop ro.build.version.security_patch

# Expected output after patching: 2026-03-01 or later
# If output shows earlier date, device remains vulnerable