CVE-2025-54512 Overview
CVE-2025-54512 is a DLL hijacking vulnerability in the AMD Ryzen Master installation package. A local, user-privileged attacker can place a malicious dynamic-link library (DLL) into a location searched by the installer. When the installer loads the attacker-controlled DLL, code executes with elevated privileges. This can result in arbitrary code execution and privilege escalation on the affected Windows host.
The issue is tracked under CWE-427: Uncontrolled Search Path Element. AMD published details in the AMD Security Bulletin AMD-SB-9020.
Critical Impact
A local attacker with standard user privileges can execute arbitrary code at elevated privilege by planting a malicious DLL that the AMD Ryzen Master installer loads during execution.
Affected Products
- AMD Ryzen Master installation package
- Windows systems where AMD Ryzen Master is installed or being installed
- Consult AMD-SB-9020 for the specific fixed version
Discovery Timeline
- 2026-08-11 - CVE-2025-54512 published to NVD
- 2026-08-12 - Last updated in NVD database
Technical Details for CVE-2025-54512
Vulnerability Analysis
The AMD Ryzen Master installer resolves one or more DLL dependencies using an insecure search path. Windows searches directories in a defined order when loading a DLL by name. If the installer does not fully qualify DLL paths or does not restrict the search order, Windows may load a DLL from an attacker-writable location such as the installer's working directory or a user-writable directory in %PATH%.
A local attacker with standard user privileges places a crafted DLL that exports the expected symbol names. When a user or administrator runs the installer, the process loads the malicious DLL and executes its DllMain routine in the installer's security context. The installer typically runs with elevated privileges, so the loaded code inherits those rights.
Exploitation requires user interaction, since a victim must launch the installer. The attack complexity is low and no additional privileges are required beyond a local user account.
Root Cause
The root cause is CWE-427: Uncontrolled Search Path Element. The installer loads DLLs without specifying an absolute path or enforcing LOAD_LIBRARY_SEARCH_SYSTEM32 or a comparable safe-search flag. Windows falls back to searching the current working directory and other locations an unprivileged user can influence.
Attack Vector
The attack vector is local. An attacker who has code-execution or file-write access as a standard user drops a malicious DLL alongside the Ryzen Master installer or in another directory searched during load. The vulnerability requires user interaction to trigger the installer. See the AMD Security Bulletin for vendor-provided technical details.
Detection Methods for CVE-2025-54512
Indicators of Compromise
- Unexpected DLL files present in the same directory as the AMD Ryzen Master installer executable prior to launch
- Child processes spawned by the Ryzen Master installer that do not match known AMD binaries or signatures
- Newly created DLLs in user-writable directories referenced by %PATH% shortly before installer execution
- Unsigned or unusually signed DLLs loaded by the AMD Ryzen Master installer process
Detection Strategies
- Monitor process creation events where the AMD Ryzen Master installer is the parent process and inspect loaded module paths
- Alert on image-load events for DLLs loaded from non-standard directories such as %TEMP%, Downloads, or user profile paths
- Correlate file-write events for .dll files with subsequent execution of the installer binary from the same directory
- Flag DLL loads by installer processes where the DLL is not digitally signed by AMD or a trusted publisher
Monitoring Recommendations
- Enable Windows Sysmon Event ID 7 (Image Loaded) and forward to a centralized log platform for review
- Baseline expected DLL load paths for AMD Ryzen Master and alert on deviations
- Restrict write permissions on directories used to stage software installers
- Review endpoint telemetry for privilege escalation attempts following installer execution
How to Mitigate CVE-2025-54512
Immediate Actions Required
- Download and run only the current AMD Ryzen Master installer directly from the official AMD website
- Verify the digital signature of the installer before execution
- Run installers from a clean, dedicated directory that contains no other user-writable files
- Restrict standard-user write access to directories used to stage administrative installers
Patch Information
AMD has published guidance in the AMD Security Bulletin AMD-SB-9020. Apply the updated AMD Ryzen Master installer version identified in the bulletin. Uninstall any older versions of the tool that were installed using a vulnerable installer.
Workarounds
- Do not execute the Ryzen Master installer from Downloads, %TEMP%, or shared directories
- Move the installer to an isolated directory that only administrators can write to before running it
- Remove AMD Ryzen Master from systems where it is not required for hardware tuning
- Enforce application control policies that block execution of unsigned DLLs loaded by installer processes
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
