CVE-2026-0015: Google Android DOS Vulnerability

CVE-2026-0015 Overview

A persistent denial of service vulnerability exists in multiple locations of AppOpsService.java within Google Android. The vulnerability stems from improper input validation that allows an attacker to cause a local denial of service condition without requiring any special execution privileges or user interaction.

Critical Impact

This vulnerability enables persistent denial of service attacks on Android devices running versions 14.0 through 16.0, potentially rendering affected devices unusable until remediation is applied.

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-2026-0015 published to NVD
• 2026-03-03 - Last updated in NVD database

Technical Details for CVE-2026-0015

Vulnerability Analysis

This vulnerability is classified as CWE-20 (Improper Input Validation) and affects the AppOpsService.java component in Android's application operations service. The AppOpsService is responsible for managing application operations and permissions within the Android framework. When malformed or specially crafted input is provided to the service, the lack of proper validation allows an attacker to trigger a persistent denial of service condition.

The attack requires local access to the device but does not need elevated privileges or any form of user interaction, making it particularly concerning for enterprise environments where devices may be shared or accessible to untrusted parties.

Root Cause

The root cause of this vulnerability lies in insufficient input validation within multiple locations of AppOpsService.java. The Android framework fails to properly sanitize or validate input parameters before processing them, allowing malformed data to corrupt the service state and cause persistent denial of service conditions. This improper validation means that the service cannot recover gracefully from malicious input, leading to system instability.

Attack Vector

The vulnerability requires local access to the target Android device. An attacker with local access can exploit this flaw without requiring any special permissions or privileges. The attack does not require user interaction, meaning it can be triggered programmatically by a malicious application or process running on the device.

The exploitation involves sending specially crafted requests to the AppOpsService that bypass input validation checks. When processed, these malicious inputs cause the service to enter an unrecoverable state, resulting in a persistent denial of service that affects device availability.

Detection Methods for CVE-2026-0015

Indicators of Compromise

• Unexpected crashes or restarts of the AppOpsService on Android devices
• Persistent device unresponsiveness or system instability after application installations
• Log entries showing exceptions or errors originating from AppOpsService.java
• Repeated system service failures without apparent cause

Detection Strategies

• Monitor Android system logs for AppOpsService-related errors and exceptions
• Implement application behavior analysis to detect unusual interactions with system services
• Deploy endpoint detection solutions capable of identifying denial of service patterns on mobile devices
• Review installed applications for suspicious behavior targeting system services

Monitoring Recommendations

• Enable verbose logging on managed Android devices to capture AppOpsService events
• Configure alerting for repeated service failures or device stability issues
• Implement centralized log collection from managed Android fleet for correlation analysis
• Monitor for applications attempting abnormal interactions with the Android operations framework

How to Mitigate CVE-2026-0015

Immediate Actions Required

• Apply the March 2026 Android Security Bulletin patches immediately
• Review and restrict untrusted application installations on affected devices
• Implement mobile device management (MDM) policies to enforce security updates
• Monitor affected devices for signs of exploitation attempts

Patch Information

Google has addressed this vulnerability in the Android Security Bulletin March 2026. Organizations should apply the security patch level 2026-03-01 or later to remediate this vulnerability. The patch includes proper input validation in AppOpsService.java to prevent exploitation.

Workarounds

• Restrict installation of applications from untrusted sources until patches are applied
• Implement strict application allowlisting on enterprise-managed devices
• Consider isolating affected devices from critical operations until remediation is complete
• Enable Android's Verify Apps feature to scan for potentially harmful applications

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

# Check for AppOpsService errors in system logs
adb logcat | grep -i "AppOpsService"