CVE-2025-33229: NVIDIA Nsight Privilege Escalation Flaw

CVE-2025-33229 Overview

NVIDIA Nsight Visual Studio for Windows contains a vulnerability in the Nsight Monitor component that allows an attacker to execute arbitrary code with the same privileges as the NVIDIA Nsight Visual Studio Edition Monitor application. This vulnerability stems from an uncontrolled search path element (CWE-427), which enables attackers to place malicious DLLs in locations that are searched before legitimate library paths.

A successful exploit of this vulnerability may lead to escalation of privileges, code execution, data tampering, denial of service, and information disclosure on affected Windows systems running NVIDIA development tools.

Critical Impact

Attackers with local access can achieve arbitrary code execution with elevated privileges, potentially compromising the entire development environment and any intellectual property being developed within NVIDIA Nsight Visual Studio.

Affected Products

• NVIDIA Nsight Visual Studio for Windows
• NVIDIA Nsight Visual Studio Edition Monitor

Discovery Timeline

• 2026-01-20 - CVE-2025-33229 published to NVD
• 2026-01-20 - Last updated in NVD database

Technical Details for CVE-2025-33229

Vulnerability Analysis

This vulnerability is classified under CWE-427 (Uncontrolled Search Path Element), a category of vulnerabilities where an application searches for critical resources such as DLL libraries or executables using a search path that includes directories under attacker control. In the context of NVIDIA Nsight Visual Studio Edition Monitor, the application fails to properly validate or restrict the directories from which it loads dynamic libraries.

The local attack vector means an adversary must already have some level of access to the target system, but the requirement for only low privileges combined with the potential for high impact across confidentiality, integrity, and availability makes this a significant security concern. Developer workstations running NVIDIA Nsight are particularly valuable targets due to the sensitive source code and intellectual property typically present on such systems.

Root Cause

The root cause is an uncontrolled search path element (CWE-427) in the NVIDIA Nsight Monitor component. The application does not adequately secure the DLL search order, allowing an attacker to place a malicious library in a location that gets searched before the legitimate system directories. When the Nsight Monitor process loads, it inadvertently executes the attacker-controlled code with its own privilege level.

This type of vulnerability commonly occurs when:

• Applications use relative paths for loading libraries
• The current working directory is included in the search path
• Environment variables like PATH are not properly sanitized
• DLL preloading attacks are possible due to missing SafeDllSearchMode configurations

Attack Vector

The attack requires local access to the target system with low privileges. An attacker would need to:

1. Identify the DLL search order used by NVIDIA Nsight Monitor
2. Place a malicious DLL with a specific filename in a directory that appears earlier in the search path than the legitimate DLL location
3. Trigger the application to load the DLL, either by waiting for a user to launch Nsight Monitor or by inducing the application to restart

User interaction is required for successful exploitation, as indicated by the vulnerability characteristics. This typically means the victim must perform an action such as opening a project file or launching the application from a specific directory where the malicious DLL resides.

The vulnerability mechanism exploits the Windows DLL loading behavior. When an application calls LoadLibrary() without specifying an absolute path, Windows searches multiple directories in a specific order. By placing a malicious DLL in a directory searched before the legitimate system locations, attackers can hijack the loading process.

For detailed technical information, refer to the NVIDIA Support Advisory.

Detection Methods for CVE-2025-33229

Indicators of Compromise

• Suspicious DLL files appearing in user-writable directories that match names of legitimate NVIDIA libraries
• Unexpected child processes spawned by NsightMonitor.exe or related NVIDIA development tools
• Modified file timestamps on DLL files in the NVIDIA Nsight installation directory
• Unusual network connections originating from NVIDIA development tool processes

Detection Strategies

• Monitor for DLL loading events where the source path differs from the expected NVIDIA installation directories
• Implement application whitelisting to detect unauthorized executables running within development environments
• Configure endpoint detection to alert on process hollowing or injection techniques targeting NVIDIA processes
• Use file integrity monitoring on NVIDIA Nsight installation directories to detect unauthorized modifications

Monitoring Recommendations

• Enable Windows Security Event logging for process creation (Event ID 4688) and DLL loading events
• Configure SentinelOne to monitor for suspicious DLL sideloading patterns associated with development tools
• Establish baseline behavior for NVIDIA Nsight processes and alert on deviations
• Review developer workstations for unexpected files in commonly exploited directories such as user profile paths and temp folders

How to Mitigate CVE-2025-33229

Immediate Actions Required

• Review the NVIDIA Support Advisory for specific patch information and update guidance
• Audit developer workstations for suspicious DLL files in user-writable directories
• Implement application control policies to restrict DLL loading to approved directories
• Consider temporarily disabling NVIDIA Nsight Monitor on critical systems until patches can be applied

Patch Information

NVIDIA has released a security advisory addressing this vulnerability. Organizations should immediately consult the NVIDIA Support Advisory for the latest patch information and update instructions. Apply vendor-provided patches as soon as they become available through official NVIDIA channels.

Workarounds

• Configure Windows SafeDllSearchMode to remove the current directory from the default DLL search order
• Restrict write permissions on directories that appear early in the DLL search path
• Use application virtualization or containerization to isolate development environments
• Implement strict access controls on developer workstations to limit which users can write to sensitive directories

# Enable SafeDllSearchMode via Registry (Windows)
# This removes the current working directory from the DLL search path
reg add "HKLM\SYSTEM\CurrentControlSet\Control\Session Manager" /v SafeDllSearchMode /t REG_DWORD /d 1 /f

# Verify the setting
reg query "HKLM\SYSTEM\CurrentControlSet\Control\Session Manager" /v SafeDllSearchMode