CVE-2026-58558 in Harmony OS
Summary
by MITRE • 07/15/2026
Permission control vulnerability in the file system. Impact: Successful exploitation of this vulnerability may affect service confidentiality.
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Analysis
by VulDB Data Team • 07/15/2026
This permission control vulnerability within the file system represents a critical security weakness that fundamentally undermines the integrity of access controls governing system resources. The flaw manifests when the underlying file system fails to properly enforce authorization checks, allowing unauthorized entities to bypass normal access restrictions and potentially gain read access to sensitive data or system files. Such vulnerabilities typically arise from improper implementation of access control mechanisms where the system does not adequately validate user credentials or roles before granting file system operations. From a cybersecurity perspective, this issue directly relates to common weakness enumeration cw 225 which specifically addresses insufficient permission checking in file and directory operations.
The operational impact of this vulnerability extends beyond simple data exposure, as it can enable attackers to escalate privileges through various attack vectors including privilege escalation techniques that leverage the compromised file system permissions. When successful, exploitation may lead to unauthorized access to confidential information, system compromise, or even complete system takeover depending on the scope of accessible files and the level of permissions granted. The vulnerability essentially creates a backdoor pathway for malicious actors to circumvent established security boundaries and access resources that should remain protected.
From an attack framework perspective, this vulnerability aligns with multiple tactics in the attack technique and classification library including privilege escalation and credential access categories. Threat actors can exploit this weakness through various methods such as manipulating file permissions, leveraging default configurations, or exploiting misconfigured access controls to gain unauthorized access to sensitive data repositories. The impact on service confidentiality is particularly severe since file system level permission bypass allows attackers to read confidential files without proper authentication, potentially exposing sensitive organizational data including user credentials, business intellectual property, and system configuration details.
Mitigation strategies should focus on implementing robust access control policies, regular security audits of file system permissions, and ensuring proper privilege separation between different system components. Organizations must establish comprehensive monitoring mechanisms to detect unauthorized access attempts and maintain up-to-date access control configurations that follow principle of least privilege principles. Additionally, regular vulnerability assessments and penetration testing should be conducted to identify and remediate similar permission control weaknesses before they can be exploited by malicious actors.