CVE-2025-58323 in MYBOX Explorer
Summary
by MITRE • 08/29/2025
NAVER MYBOX Explorer for Windows before 3.0.8.133 allows a local attacker to escalate privileges to NT AUTHORITY\SYSTEM by executing arbitrary files due to improper privilege checks.
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Analysis
by VulDB Data Team • 08/29/2025
CVE-2025-58323 represents a critical local privilege escalation vulnerability affecting NAVER MYBOX Explorer for Windows versions prior to 3.0.8.133. This vulnerability stems from inadequate privilege validation mechanisms within the application's file execution processes, creating a pathway for malicious actors to elevate their system access from standard user privileges to the highest possible level of NT AUTHORITY\SYSTEM. The flaw specifically manifests when the application executes arbitrary files without proper verification of the executing user's privileges, allowing a local attacker to manipulate the system's execution flow.
The technical implementation of this vulnerability aligns with CWE-276, which addresses improper privilege management and inadequate access control mechanisms. The vulnerability operates by exploiting the application's failure to validate the security context of file execution operations, enabling attackers to inject malicious code that executes with elevated privileges. This improper privilege checking creates a direct attack surface where local malicious code execution can be leveraged to gain system-level access.
From an operational perspective, this vulnerability poses significant risks to organizations relying on NAVER MYBOX Explorer for Windows, as local attackers with minimal privileges can exploit this weakness to achieve complete system compromise. The attack requires only local system access, making it particularly dangerous in environments where user accounts may have elevated privileges or where users can interact with the vulnerable application. The impact extends beyond simple privilege escalation, as attackers with SYSTEM-level access can modify system files, install malware, and potentially establish persistence mechanisms.
The ATT&CK framework categorizes this vulnerability under privilege escalation techniques, specifically targeting T1068 which involves exploiting vulnerabilities to gain elevated privileges. Security professionals should recognize this as a critical vulnerability requiring immediate remediation, as it provides attackers with a straightforward path to system compromise. The vulnerability's exploitation does not require network access or complex attack chains, making it particularly dangerous in environments where local access is common.
Mitigation strategies should include immediate deployment of NAVER MYBOX Explorer version 3.0.8.133 or later, which addresses the privilege validation issues through proper access control mechanisms. Organizations should also implement additional security controls such as monitoring for unauthorized file execution patterns, restricting local user privileges where possible, and conducting regular security assessments to identify similar privilege escalation vulnerabilities. System administrators should consider implementing application whitelisting policies to prevent unauthorized code execution and establish robust patch management procedures to ensure timely deployment of security updates. The vulnerability highlights the importance of proper privilege separation and access control validation in system applications, particularly those handling file execution processes that could potentially be exploited for system-level compromise.