CVE-2026-21034 in Auto
Summary
by MITRE • 06/05/2026
Improper export of android application components in Samsung Auto prior to version 3.1.2.61 in Android 15 and 3.2.0.38 in Android 16 allows local attacker to change audio configuration.
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Analysis
by VulDB Data Team • 06/05/2026
This vulnerability involves improper export of Android application components within Samsung Auto software, specifically affecting versions prior to 3.1.2.61 on Android 15 and 3.2.0.38 on Android 16. The flaw stems from inadequate component export controls that allow local attackers to manipulate audio configuration settings through unauthorized access to application components. Such improper export configurations create security boundaries that should remain protected but instead expose functionality that enables privilege escalation and unauthorized system modifications. The vulnerability represents a classic case of insufficient access control where application components meant to be internal or restricted become accessible to malicious local processes. This misconfiguration allows attackers with local system access to potentially alter audio settings, which could serve as a foothold for more extensive system compromise or as a vector for disrupting vehicle audio systems. The issue directly relates to CWE-276, which addresses incorrect permissions for critical resources, and aligns with ATT&CK technique T1068, involving exploitation of remote services and local system access. The attack surface is particularly concerning in automotive environments where audio system integrity directly impacts vehicle operation and user safety. Attackers could leverage this vulnerability to modify audio configurations in ways that might interfere with vehicle alerts, navigation audio, or communication systems. The security implications extend beyond simple audio manipulation to potential disruption of critical vehicle functions that rely on audio feedback. Samsung Auto applications typically handle sensitive vehicle data and system controls, making improper component exports particularly dangerous when they enable unauthorized access to system configuration parameters. The vulnerability demonstrates a lack of proper Android component security controls where exported services, activities, or receivers should have been protected with appropriate permission checks and security restrictions. This flaw represents a failure in the principle of least privilege where application components are unnecessarily exposed to local processes. The impact is significant because automotive systems require high levels of security and reliability, and audio configuration changes could potentially mask other security issues or create false system states. Mitigation strategies must focus on proper component export controls, implementing strict permission requirements for all exported application components, and ensuring that only authorized processes can access sensitive system configurations. Security hardening should include comprehensive review of all exported components, implementation of proper Android manifest security controls, and regular security assessments of automotive application environments. The vulnerability highlights the critical importance of secure component design in automotive software systems where traditional mobile security boundaries may not adequately protect against local privilege escalation attacks.