CVE-2026-0086 Overview
CVE-2026-0086 is a local privilege escalation vulnerability in Google Android. The flaw exists in the onCreate method of DisableSupervisionActivity.kt, where a missing null check allows an attacker to delete supervision data. Exploitation requires no user interaction and no additional execution privileges. The weakness is categorized under [CWE-269] Improper Privilege Management. Google addressed the issue in the June 2026 Android Security Bulletin.
Critical Impact
A local attacker can delete device supervision data, bypassing parental controls or enterprise management restrictions enforced on the device.
Affected Products
- Google Android 16.0 QPR2 Beta 1
- Google Android 16.0 QPR2 Beta 2
- Google Android 16.0 QPR2 Beta 3
Discovery Timeline
- 2026-06-01 - CVE-2026-0086 published to NVD alongside the Android Security Bulletin June 2026
- 2026-06-03 - Last updated in NVD database
Technical Details for CVE-2026-0086
Vulnerability Analysis
The vulnerability resides in DisableSupervisionActivity.kt, a component responsible for handling requests to disable supervision policies on the device. Android supervision frameworks enforce parental controls and managed-device policies that restrict user actions. When the activity's onCreate method runs, it processes incoming intent data without performing a required null check on a critical object reference. An attacker who triggers this activity with a crafted or empty intent can reach a code path that proceeds to delete supervision state. The result is removal of policy enforcement data that should only be modifiable by privileged supervisor components.
Root Cause
The root cause is a missing null check during activity initialization. Activities in Android receive caller-controlled intent extras, and developers must validate every referenced field before acting on it. Here, the code assumes a non-null object and proceeds directly to a deletion routine. This mishandling falls under [CWE-269] because the activity grants effective supervisor privileges to unprivileged callers.
Attack Vector
Exploitation is local. A malicious application installed on the device, or a process running with standard user privileges, can launch DisableSupervisionActivity directly using a standard intent. Because exported activity handling does not require user interaction or elevated permissions in the vulnerable build, the deletion path executes silently. The outcome is local privilege escalation: supervision constraints that should restrict the user or device are removed without the supervisor's consent.
No verified public exploit code is available for CVE-2026-0086. See the Android Security Bulletin June 2026 for additional technical details.
Detection Methods for CVE-2026-0086
Indicators of Compromise
- Unexpected invocations of DisableSupervisionActivity originating from non-system packages in ActivityManager logs.
- Sudden disappearance of supervision profile data, parental control policies, or device-owner records from the affected device.
- Installed third-party applications that hold no supervision role but reference supervision-related components.
Detection Strategies
- Audit Android logcat output for ActivityTaskManager entries referencing supervision components launched by unprivileged UIDs.
- Monitor mobile device management (MDM) console for unexpected loss of supervision state or policy reset events on enrolled Android 16 QPR2 beta devices.
- Inspect application install history for newly sideloaded APKs preceding any supervision policy change.
Monitoring Recommendations
- Forward Android event logs and MDM telemetry to a centralized analytics platform to correlate activity launches with policy changes.
- Alert on supervision state transitions that are not initiated by the registered supervisor or device owner.
- Track devices running Android 16.0 QPR2 beta builds and prioritize them for accelerated patch validation.
How to Mitigate CVE-2026-0086
Immediate Actions Required
- Update affected devices to the Android build that incorporates the June 2026 security patch level.
- Remove Android 16.0 QPR2 Beta 1, Beta 2, and Beta 3 images from production or supervised deployments until patched builds are installed.
- Re-enroll devices into supervision or MDM after patching and verify policy enforcement is intact.
Patch Information
Google published the fix in the Android Security Bulletin June 2026. Devices must be updated to a security patch level of 2026-06-01 or later. Original equipment manufacturers (OEMs) distribute the corresponding firmware through their standard update channels.
Workarounds
- Restrict installation of untrusted applications on supervised devices through MDM application allowlisting.
- Disable developer options and USB debugging on supervised devices to limit local attack surface.
- Move off Android 16.0 QPR2 beta channels onto a stable release that has received the June 2026 patch.
# Verify the Android security patch level on a connected device
adb shell getprop ro.build.version.security_patch
# Expected output: 2026-06-01 or later
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
