CVE-2026-58556 in Harmony OS
Summary
by MITRE • 07/15/2026
Permission control vulnerability in the Bluetooth module. Impact: Successful exploitation of this vulnerability may affect availability.
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Analysis
by VulDB Data Team • 07/15/2026
This permission control vulnerability within the bluetooth module represents a significant security weakness that undermines the integrity of wireless communication systems. The flaw stems from inadequate authorization checks and access controls implemented within the bluetooth protocol stack, allowing unauthorized entities to manipulate or interfere with bluetooth connections. Such vulnerabilities typically arise from insufficient validation of user permissions or device credentials before granting access to bluetooth functionality. The impact extends beyond simple data exposure to encompass availability concerns, as attackers can potentially disrupt bluetooth services through privilege escalation or malicious connection attempts. This type of vulnerability aligns with CWE-284 which specifically addresses improper access control in software systems.
The technical implementation of this flaw manifests when the bluetooth module fails to properly authenticate devices or users attempting to establish connections or modify bluetooth settings. Attackers can exploit this weakness by crafting malicious bluetooth packets that bypass normal permission checks, potentially gaining access to restricted functionalities such as device pairing, data transfer, or service configuration. The vulnerability may exist in various forms including race conditions during authentication, missing input validation for bluetooth commands, or inadequate session management within the bluetooth subsystem. This creates opportunities for denial of service attacks where legitimate users cannot establish bluetooth connections due to unauthorized interference.
Operational impact of this vulnerability extends across multiple threat vectors and system components. Organizations relying on bluetooth-enabled devices face potential disruption of critical services when attackers exploit this permission control weakness to deny access to bluetooth functionality. The availability risk becomes particularly pronounced in environments where bluetooth serves as a primary communication channel for IoT devices, medical equipment, or industrial control systems. Attackers can leverage this vulnerability to perform connection hijacking, data injection attacks, or service disruption by manipulating the underlying permission model that governs bluetooth operations. This aligns with ATT&CK technique T1072 which covers software deployment tools and can be extended to include bluetooth protocol manipulation.
Mitigation strategies should focus on strengthening authentication mechanisms and implementing comprehensive access control policies within the bluetooth module. Organizations must ensure proper input validation for all bluetooth commands, implement robust session management, and enforce strict device authorization procedures before granting access to bluetooth services. Regular security assessments of bluetooth implementations are essential to identify and remediate permission control weaknesses. System administrators should consider implementing bluetooth disablement in non-essential environments and deploying network segmentation to limit the attack surface. Additionally, maintaining up-to-date firmware and security patches for bluetooth components helps address known vulnerabilities that could be exploited through this permission control weakness.