CVE-2025-57836: Samsung Magician Privilege Escalation Flaw

CVE-2025-57836 Overview

A DLL hijacking vulnerability has been discovered in Samsung Magician versions 6.3.0 through 8.3.2 on Windows. The installer creates a temporary folder with weak permissions during the installation process, allowing a non-admin user to perform DLL hijacking and escalate privileges to gain full system access.

Critical Impact

Local attackers with low privileges can hijack DLL loading during Samsung Magician installation to achieve privilege escalation and execute arbitrary code with elevated permissions.

Affected Products

• Samsung Magician 6.3.0 through 8.3.2
• Windows Operating Systems running affected Samsung Magician versions
• Systems where Samsung Magician installation is performed

Discovery Timeline

• 2026-01-05 - CVE-2025-57836 published to NVD
• 2026-01-08 - Last updated in NVD database

Technical Details for CVE-2025-57836

Vulnerability Analysis

This vulnerability is classified under CWE-427 (Uncontrolled Search Path Element), which occurs when an application uses a fixed or controlled search path to locate resources but allows external manipulation of that path. In this case, the Samsung Magician installer creates temporary directories with insufficiently restrictive permissions, enabling an unprivileged local user to place malicious DLL files in the search path.

When the installer executes with elevated privileges, it loads DLLs from this temporary location without properly validating their authenticity. This allows an attacker to substitute legitimate DLLs with malicious ones, achieving code execution in the context of the elevated installation process.

Root Cause

The root cause lies in the improper permission configuration of the temporary folder created during the Samsung Magician installation process. The installer fails to enforce restrictive access controls on this directory, allowing any local user to write files to it. Combined with the DLL search order used by Windows executables, this creates a privilege escalation vector where a low-privileged user can inject malicious code that will be executed with administrator privileges.

Attack Vector

The attack requires local access to the target system. An attacker must:

1. Identify the temporary folder location used by the Samsung Magician installer
2. Place a malicious DLL with a name matching one that the installer attempts to load
3. Wait for or trigger the installation process
4. The malicious DLL executes with the elevated privileges of the installer

The exploitation follows the classic DLL hijacking pattern where the attacker abuses the Windows DLL search order. When an application does not specify an absolute path for a required DLL, Windows searches through a predefined sequence of directories. By placing a malicious DLL in a higher-priority search location with weak permissions, the attacker ensures their code loads instead of the legitimate library.

Detection Methods for CVE-2025-57836

Indicators of Compromise

• Suspicious DLL files appearing in Samsung Magician installation temporary directories
• Unexpected process executions spawned from the Samsung Magician installer
• File creation events in temporary folders by non-administrative users prior to installation
• Anomalous DLL loading patterns during Samsung Magician installation routines

Detection Strategies

• Monitor file system activity in temporary directories commonly used by installers for unauthorized DLL creation
• Implement application whitelisting to prevent unauthorized DLLs from loading during installation processes
• Deploy endpoint detection rules to identify DLL hijacking attempts based on path anomalies
• Track privilege escalation events coinciding with Samsung Magician installation activity

Monitoring Recommendations

• Enable detailed logging for process creation and DLL loading events on systems where Samsung Magician may be installed
• Configure alerts for file modifications in temporary installation directories by low-privileged users
• Review installation logs for Samsung Magician to identify anomalous DLL loading behavior
• Implement SentinelOne's behavioral AI to detect privilege escalation patterns consistent with DLL hijacking attacks

How to Mitigate CVE-2025-57836

Immediate Actions Required

• Update Samsung Magician to the latest patched version beyond 8.3.2
• Remove or restrict access to temporary installation directories before running the installer
• Perform Samsung Magician installations only on systems where local user access is strictly controlled
• Monitor for exploitation attempts using endpoint detection and response solutions

Patch Information

Samsung has acknowledged this vulnerability and released security updates. Organizations should apply the latest Samsung Magician version that addresses this issue. For detailed patch information and download links, refer to the Samsung Product Security Updates page and the Samsung CVE-2025-57836 Advisory.

Workarounds

• Restrict local user access during Samsung Magician installation to prevent malicious DLL placement
• Manually set restrictive permissions on temporary installation directories before initiating installation
• Use application control policies to block unauthorized DLL execution in installation paths
• Consider deploying Samsung Magician via controlled enterprise deployment methods rather than interactive installation