CVE-2025-57836: Samsung Magician Privilege Escalation Flaw

CVE-2025-57836 Overview

CVE-2025-57836 is a local privilege escalation vulnerability in Samsung Magician for Windows, affecting versions 6.3.0 through 8.3.2. The installer creates a temporary folder with weak permissions during installation. A non-admin user with local access can plant a malicious DLL in this folder and achieve code execution in the security context of the installer process.

The flaw is classified under CWE-427: Uncontrolled Search Path Element. Successful exploitation results in privilege escalation to the account running the installer, typically SYSTEM or an administrator.

Critical Impact
A local, low-privileged user can escalate to administrator or SYSTEM by placing a crafted DLL in the installer's temporary folder while Samsung Magician installs or upgrades.

Affected Products

Samsung Magician 6.3.0 through 8.3.2 on Windows
Microsoft Windows (all supported versions where Samsung Magician installs)
Endpoints where Samsung SSD management tooling is deployed

Discovery Timeline

2026-01-05 - CVE-2025-57836 published to the National Vulnerability Database (NVD)
2026-06-17 - Last updated in the NVD database

Technical Details for CVE-2025-57836

Vulnerability Analysis

Samsung Magician is a Windows utility that manages Samsung solid-state drives (SSDs), including firmware updates and performance tuning. During installation, the installer extracts helper components to a temporary folder before executing them. The installer sets permissive access control on this folder, allowing standard users to write to it.

Because the installer loads DLLs from this writable location, a local attacker can drop a malicious DLL that matches a name the installer resolves. When the installer loads the planted DLL, the attacker's code runs with the privileges of the installer process. Elevated MSI or setup processes typically run as SYSTEM, converting a low-privilege session into full system control.

The issue is a classic DLL hijacking pattern combined with an insecure filesystem access control list (ACL). The CWE-427 designation reflects the installer's failure to constrain the DLL search path to trusted directories.

Root Cause

The root cause is weak permissions on the installer's temporary working directory. Standard user accounts receive write access to a folder that the elevated installer subsequently uses to load code. The installer does not verify DLL provenance or restrict the search path before loading.

Attack Vector

Exploitation requires local access with an authenticated low-privileged account. The attacker monitors the temporary path used by the installer, writes a malicious DLL under a name the installer will resolve, and waits for the installer or upgrade process to load it. Refer to the Samsung CVE-2025-57836 advisory for vendor-supplied technical details.

No public proof-of-concept has been published, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

// No verified exploit code is publicly available for CVE-2025-57836.
// Exploitation follows the standard DLL search-order hijack pattern:
// 1. Attacker enumerates the installer's temporary folder permissions.
// 2. Attacker writes a payload DLL matching a name the installer loads.
// 3. Installer runs and loads the attacker DLL with elevated privileges.

Detection Methods for CVE-2025-57836

Indicators of Compromise

Unexpected DLL files written to Samsung Magician installer temporary directories by non-SYSTEM, non-administrator accounts
Samsung Magician installer processes (Samsung_Magician_Installer*.exe, msiexec.exe) loading DLLs from user-writable temporary paths
Child processes of the Samsung Magician installer that are not signed by Samsung

Detection Strategies

Alert on standard user accounts writing DLL files into directories subsequently accessed by elevated installer processes.
Correlate installer execution with LoadLibrary events referencing DLLs outside of Program Files or the Windows system directories.
Hunt for privilege transitions where a Samsung Magician installer session spawns unsigned or user-owned modules.

Monitoring Recommendations

Enable Windows Sysmon Event ID 7 (Image Loaded) and Event ID 11 (FileCreate) on endpoints running Samsung Magician.
Baseline installer file system activity so that anomalous DLL writes to temporary folders raise alerts.
Feed installer telemetry into a centralized SIEM or data lake for retrospective hunts across the fleet.

How to Mitigate CVE-2025-57836

Immediate Actions Required

Upgrade Samsung Magician to a fixed version above 8.3.2 as directed by the Samsung Product Security Updates page.
Restrict installer execution to trusted administrators and prevent standard users from initiating Samsung Magician installs or upgrades.
Audit endpoints for prior installations that may have been abused before patching.

Patch Information

Samsung has released updated Samsung Magician builds that address CVE-2025-57836. Details are published on the Samsung CVE-2025-57836 advisory. Administrators should download the current release directly from Samsung and validate the digital signature before deployment.

Workarounds

Remove Samsung Magician from systems where SSD management tooling is not required.
Enforce application control policies that block DLL loading from user-writable temporary directories.
Run installer executions only from an administrator context with User Account Control (UAC) prompts enabled, and avoid running installers on shared or multi-user hosts.

bash

# Query installed Samsung Magician version on Windows endpoints (PowerShell)
Get-ItemProperty HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall\* |
  Where-Object { $_.DisplayName -like 'Samsung Magician*' } |
  Select-Object DisplayName, DisplayVersion, InstallLocation