CVE-2026-28647 in Android
Summary
by MITRE • 10/05/2026
In updateState of DeviceAdminAppsPreferenceController.java, there is a possible permission bypass due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
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Analysis
by VulDB Data Team • 10/05/2026
The vulnerability identified within the Android operating system's device administration framework centers on a critical logic flaw located in the updateState method of the DeviceAdminAppsPreferenceController class. This component is responsible for managing and displaying preferences related to applications that have been granted or are requesting device administrator privileges, which represent one of the highest levels of access available to an application within the Android ecosystem. The core issue stems from a failure in the code logic during state updates, specifically regarding how permissions and privilege states are validated before allowing user interactions or system changes. This logical error creates a pathway for unauthorized escalation of privileges, allowing a malicious actor with local access on the device to bypass intended security controls without requiring any additional execution privileges beyond what is already present in their current context.
From a technical perspective, this flaw represents an authorization bypass where the application fails to correctly enforce access control policies during specific state transitions or UI updates. In Android architecture, Device Admin components are designed to provide enhanced capabilities such as remote wipe, password policy enforcement, and encryption management. These privileges are typically granted only after explicit user consent through a secure system dialog. However, due to the logic error in updateState, an attacker can manipulate the internal state of this controller to trick the system into believing that certain administrative actions have been authorized or are valid when they are not. This bypasses the standard security checks that would normally prevent unauthorized applications from exercising device administrator rights. The vulnerability is particularly dangerous because it does not require user interaction for exploitation, meaning an attacker who has already gained a foothold on the device through another vector can automatically escalate their privileges without further engagement or deception of the end-user.
The operational impact of this privilege escalation is severe, as it grants the compromised application full control over critical system functions and sensitive data. Once elevated to device administrator status, the malicious software can enforce its own password policies, disable security features like Google Play Protect, remotely wipe user data including contacts, messages, and applications, and potentially exfiltrate encrypted storage contents if encryption keys are accessible through these privileged channels. This level of access effectively neutralizes many of the built-in security mechanisms designed to protect user privacy and device integrity. The attacker gains a persistent and powerful foothold that can survive application uninstalls or factory resets depending on how deeply the exploit integrates with system services, making remediation difficult for both users and enterprise administrators relying on Mobile Device Management solutions.
This vulnerability aligns closely with CWE-269 Improper Privilege Management, as it involves a failure to properly enforce privilege boundaries during state updates. It also maps to MITRE ATT&CK techniques related to Privilege Escalation via Android-specific mechanisms, specifically those involving abuse of device administration APIs or configuration manipulation. The lack of user interaction requirement places this in the category of passive exploitation vectors that can be triggered automatically by background processes or other compromised applications on the same device.
Mitigation strategies must focus on patching the underlying logic error within the DeviceAdminAppsPreferenceController class to ensure strict validation of administrative permissions before any state changes are applied. Developers should implement rigorous checks to verify that all privilege escalations are explicitly authorized through secure, user-confirmed dialogs and not merely inferred from internal state variables. For system integrators and device manufacturers, this requires immediate deployment of security patches that address the specific logic flaw in the updateState method. Users can mitigate risk by keeping their devices updated with the latest security patches provided by OEMs. Additionally, enterprises should enforce strict application whitelisting policies to prevent unauthorized applications from installing or executing on managed devices, thereby reducing the attack surface available for initial compromise and subsequent privilege escalation attempts. Regular auditing of device administrator permissions through MDM consoles can also help detect any anomalous elevation activities that might indicate exploitation of this vulnerability.