CVE-2026-0019 Overview
CVE-2026-0019 is a local privilege escalation vulnerability in SettingsLib, a shared library used by Android system applications. A logic error in the code allows an attacker with local access to disable system components without additional execution privileges. User interaction is not required for exploitation.
The flaw is classified under [CWE-269] Improper Privilege Management. Google addressed the issue in the Android 17 security bulletin. The vulnerability affects Android 17 and carries a CVSS 3.1 base score of 7.8.
Critical Impact
A local attacker can disable Android system components and escalate privileges without user interaction, undermining device integrity and security controls.
Affected Products
- Google Android 17
- Android SettingsLib shared library
- Android system applications depending on SettingsLib
Discovery Timeline
- 2026-06-17 - CVE-2026-0019 published to NVD
- 2026-06-18 - Last updated in NVD database
Technical Details for CVE-2026-0019
Vulnerability Analysis
The vulnerability resides in SettingsLib, the shared library that backs Android Settings and related system applications. A logic error permits a local, low-privileged process to disable system components that should be protected by the platform's permission model.
Disabling system components can remove safeguards such as security services, device administration features, or accessibility-enforced restrictions. Once those components are offline, the attacker can perform actions that the platform would otherwise block, achieving local escalation of privilege.
The Android Security Bulletin lists the issue with confidentiality, integrity, and availability impacts all rated High. The EPSS probability is 0.08%, reflecting limited public exploitation signals at the time of publication.
Root Cause
The root cause is improper privilege management [CWE-269] in SettingsLib. The library evaluates a privilege or state condition incorrectly, allowing a code path that disables protected components to execute under callers that lack the required authority.
Attack Vector
Exploitation requires local access and low privileges, such as those held by an installed third-party application. The attacker invokes the vulnerable SettingsLib code path to disable a system component, then leverages the resulting state to perform privileged operations. No user interaction is required. No verified public proof-of-concept code is available.
Detection Methods for CVE-2026-0019
Indicators of Compromise
- Unexpected disabling of Android system packages or services on a device that has not received configuration changes from MDM or the user.
- Installed applications invoking SettingsLib APIs or interacting with PackageManager to change component enabled-state for system packages.
- Repeated calls from non-system UIDs that result in disabled or hidden system components after installation of a new app.
Detection Strategies
- Monitor logcat and Android system logs for setApplicationEnabledSetting and setComponentEnabledSetting calls targeting system packages from non-privileged callers.
- Use mobile threat defense or EMM telemetry to flag devices where critical system components transition to a disabled state outside of approved policy actions.
- Compare installed app permissions against observed behavior to identify applications attempting to manipulate system component state.
Monitoring Recommendations
- Track Android build fingerprints and patch levels across the fleet to confirm devices receive the Android 17 security bulletin fixes.
- Alert on devices reporting Android 17 builds that predate the patch level addressing CVE-2026-0019.
- Forward mobile device telemetry into a central analytics platform and correlate component-state changes with recent app installations.
How to Mitigate CVE-2026-0019
Immediate Actions Required
- Apply the Android 17 security patch published in the Android Security Bulletin as soon as it is available from the device vendor.
- Enforce minimum security patch level policies through MDM to block enrollment of unpatched Android 17 devices.
- Audit installed applications and remove those from untrusted sources, since exploitation requires local code execution on the device.
Patch Information
Google published the fix as part of the Android 17 security bulletin. Device manufacturers integrate the patch into vendor builds; users should install OS updates as soon as their device vendor releases them. Refer to the Android Security Bulletin for the corresponding patch level.
Workarounds
- Restrict installation to applications from Google Play or other vetted enterprise sources until the patch is applied.
- Use MDM policies to disable sideloading and unknown sources on managed Android 17 devices.
- Apply application allow-listing for high-risk users to limit which processes can interact with SettingsLib code paths.
# Verify Android security patch level on a managed device via adb
adb shell getprop ro.build.version.security_patch
adb shell getprop ro.build.version.release
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
