CVE-2019-25293 in Blue Stacks App Player
Summary
by MITRE • 02/06/2026
BlueStacks App Player 2.4.44.62.57 contains an unquoted service path vulnerability in the BstHdLogRotatorSvc service that allows local attackers to potentially execute arbitrary code. Attackers can exploit the unquoted path in C:\Program Files (x86)\Bluestacks\HD-LogRotatorService.exe to inject malicious executables and escalate privileges.
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Analysis
by VulDB Data Team • 02/06/2026
The vulnerability identified as CVE-2019-25293 represents a critical security flaw in BlueStacks App Player version 2.4.44.62.57 that stems from improper service path configuration. This issue manifests within the BstHdLogRotatorSvc service component where the executable path lacks proper quotation marks around the file location. The affected path C:\Program Files (x86)\Bluestacks\HD-LogRotatorService.exe creates a dangerous condition that can be exploited by local attackers to gain elevated privileges and execute malicious code.
This vulnerability aligns with CWE-428, which specifically addresses the improper handling of unquoted service paths in Windows environments. The flaw occurs because Windows searches for executables in the specified path and will execute any file with the same name as the first directory component in the path. When the path is unquoted, Windows treats each directory component as a separate executable name, allowing attackers to place malicious executables in directories such as C:\Program Files (x86)\Bluestacks\HD-LogRotatorService.exe where the system will execute the attacker's malicious file instead of the legitimate service executable. This behavior constitutes a privilege escalation vector that can be exploited through the Windows service management mechanism.
The operational impact of this vulnerability extends beyond simple code execution as it provides attackers with a persistent foothold within the system. Local attackers who can manipulate the service path can inject malicious executables that will execute with the privileges of the service account, typically SYSTEM level privileges. This creates a significant risk for enterprise environments where BlueStacks is deployed, as the compromised service can be leveraged to establish backdoors, exfiltrate data, or deploy additional malware. The vulnerability is particularly concerning because it requires no user interaction and can be exploited by any local user with access to the system, making it a prime target for both insider threats and initial compromise attempts.
Mitigation strategies for CVE-2019-25293 should focus on immediate remediation through proper path quoting and system hardening. Organizations should apply the vendor-provided security patches or updates that address the unquoted service path issue. System administrators should verify that all service paths are properly quoted using double quotation marks to prevent the exploitation vector. Additionally, implementing the principle of least privilege and restricting local user access to critical system directories can reduce the attack surface. Security monitoring should include detection of unauthorized service modifications and unusual process execution patterns related to the affected service path. The vulnerability demonstrates the importance of adhering to secure coding practices and service configuration standards as outlined in the ATT&CK framework under the privilege escalation techniques category. Regular security assessments should include verification of service paths and proper implementation of Windows service security controls to prevent similar vulnerabilities from being introduced in the future.
The exploitation of this vulnerability can be detected through monitoring of service startup events, process creation logs, and file system changes in the affected directory structure. Network security controls should also monitor for any suspicious activity originating from compromised systems that may indicate successful exploitation. Organizations should implement comprehensive patch management processes to ensure timely remediation of such vulnerabilities and maintain up-to-date threat intelligence to identify similar issues in other applications and services.