CVE-2025-48506 Overview
CVE-2025-48506 is a DLL injection vulnerability affecting the AMD Vitis™ Unified software installation path on local Windows machines. The flaw stems from uncontrolled search paths [CWE-427] in the installation directory. An attacker with local access can place a malicious Dynamic Link Library (DLL) into the install path. When the application loads the planted library, arbitrary code executes in the context of the process.
Critical Impact
A local attacker who can write files to the Vitis Unified installation path can trigger arbitrary code execution when trusted binaries load a planted DLL.
Affected Products
- AMD Vitis™ Unified software on Windows (see AMD Security Bulletin AMD-SB-8015 for specific versions)
Discovery Timeline
- 2026-08-11 - CVE-2025-48506 published to NVD
- 2026-08-12 - Last updated in NVD database
Technical Details for CVE-2025-48506
Vulnerability Analysis
The vulnerability is a classic uncontrolled search path element weakness [CWE-427]. AMD Vitis Unified installs to a Windows directory that permits DLL planting. When a Vitis binary starts, the Windows loader resolves dependent libraries using its standard search order. If a malicious DLL sharing the name of a legitimate dependency exists in the install path, the loader maps it into the process.
The injected code inherits the privileges of the user launching the affected Vitis component. In development environments where engineers run tooling with elevated rights, this expands the impact of the attack. Exploitation requires local access and user interaction to launch the vulnerable process.
Root Cause
The installation directory permissions and search path handling allow non-privileged users to introduce DLLs that the Vitis loader will resolve before or instead of legitimate system libraries. The application does not enforce absolute paths, code signing checks, or safe DLL search mode for all dependencies loaded from the install directory.
Attack Vector
An attacker with local write access to the Vitis installation path stages a DLL matching an expected import name. When any user starts the associated Vitis executable, the planted DLL is loaded and its DllMain routine runs arbitrary code. Attack chains typically combine this technique with initial-access malware, malicious installers, or supply-chain compromise of shared build hosts.
No verified proof-of-concept exploit code is publicly available. Refer to the AMD Security Bulletin AMD-SB-8015 for vendor technical detail.
Detection Methods for CVE-2025-48506
Indicators of Compromise
- Unexpected DLL files written to the Vitis Unified installation directory by non-administrator accounts.
- Vitis executables loading DLLs from user-writable paths rather than System32 or the signed install location.
- Unsigned or newly created modules mapped into Vitis processes shortly before anomalous child process creation.
Detection Strategies
- Monitor file creation events (Sysmon Event ID 11) targeting the Vitis Unified install path, especially .dll extensions.
- Alert on image load events (Sysmon Event ID 7) where Vitis processes load unsigned DLLs from non-standard directories.
- Correlate suspicious child processes spawned by Vitis binaries against baseline developer workflow behavior.
Monitoring Recommendations
- Audit NTFS permissions on the Vitis installation directory and flag any ACL modifications granting write access to non-privileged principals.
- Track outbound network connections initiated by Vitis executables that deviate from license validation or update endpoints.
- Enable PowerShell and command-line logging on engineering workstations that run AMD toolchains.
How to Mitigate CVE-2025-48506
Immediate Actions Required
- Restrict write permissions on the Vitis Unified installation directory to administrators only.
- Apply the fixed Vitis release identified in AMD Security Bulletin AMD-SB-8015.
- Inventory workstations with Vitis installed and verify installation path ACLs across the fleet.
- Remove any unauthorized DLLs discovered in the installation directory and investigate the source.
Patch Information
AMD has published remediation guidance in AMD Security Bulletin AMD-SB-8015. Apply the vendor-specified fixed version of Vitis Unified. Reinstall to a protected path such as C:\Program Files\ where standard Windows ACLs deny write access to non-administrator accounts.
Workarounds
- Reinstall Vitis Unified under C:\Program Files\ to inherit restrictive default ACLs.
- Enforce Windows AppLocker or WDAC policies that block execution of unsigned DLLs from user-writable directories.
- Enable the SafeDllSearchMode registry setting and remove the current working directory from the DLL search path where feasible.
- Restrict interactive local access on shared build and engineering hosts.
# Configuration example
# Audit ACLs on the Vitis install directory (PowerShell)
Get-Acl 'C:\Xilinx\Vitis' | Format-List
# Remove write permissions for non-administrator groups
icacls 'C:\Xilinx\Vitis' /inheritance:r
icacls 'C:\Xilinx\Vitis' /grant:r 'Administrators:(OI)(CI)F' 'SYSTEM:(OI)(CI)F' 'Users:(OI)(CI)RX'
# Enforce Safe DLL Search Mode
reg add 'HKLM\SYSTEM\CurrentControlSet\Control\Session Manager' /v SafeDllSearchMode /t REG_DWORD /d 1 /f
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
