CVE-2026-21029 in Samsung
Summary
by MITRE • 06/05/2026
Improper export of android application components in Galaxy Editing Service prior to SMR Jun-2026 Release 1 allows local attacker to execute privileged operations.
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Analysis
by VulDB Data Team • 06/05/2026
This vulnerability represents a critical security flaw in the Galaxy Editing Service application that existed prior to the SMR Jun-2026 Release 1 update. The issue stems from improper export of Android application components, specifically affecting the service's ability to properly control component exposure to other applications within the Android ecosystem. The vulnerability falls under CWE-922, which addresses insufficient export of Android application components, and aligns with ATT&CK technique T1068 where adversaries exploit weaknesses in application component exposure to gain elevated privileges. The flaw allows local attackers who have already compromised a device to execute privileged operations that should normally be restricted to system-level processes or the application's own components.
The technical implementation of this vulnerability occurs when Android components such as services, activities, or broadcast receivers are exported without proper permission checks or component isolation measures. In the context of Galaxy Editing Service, this misconfiguration enables malicious applications with appropriate permissions to interact with the service's exported components, bypassing normal security boundaries that should prevent unauthorized access to privileged operations. The vulnerability exploits the fundamental Android security model where exported components are accessible to any application that can resolve the component name, creating a path for privilege escalation attacks.
The operational impact of this vulnerability extends beyond simple unauthorized access, as it enables attackers to perform operations that require elevated privileges within the application's context. Local attackers can leverage this weakness to manipulate the service's functionality, potentially accessing sensitive data, modifying application state, or executing arbitrary code with the privileges of the Galaxy Editing Service. This creates a significant risk for users whose devices are compromised, as the vulnerability can be exploited to gain persistent access to device functionality and potentially escalate to full system compromise. The attack surface is particularly concerning given that the vulnerability affects a core system service that may be actively running and accessible to other applications on the device.
Mitigation strategies for this vulnerability should focus on implementing proper Android component export controls and following the principle of least privilege. Organizations should immediately apply the SMR Jun-2026 Release 1 patch that addresses this specific issue, as it likely includes proper component export restrictions and permission validation mechanisms. System administrators should conduct thorough security audits to identify any other applications with similar export misconfigurations, particularly those that expose components without proper intent filters or permission checks. The remediation process should involve reviewing all exported components and ensuring that any that require elevated privileges are properly protected through android:exported="false" attributes or appropriate permission requirements. Additionally, implementing runtime component validation and monitoring for unauthorized access attempts can provide additional defense in depth against exploitation attempts.