CVE-2025-33218: NVIDIA GPU Driver Privilege Escalation

CVE-2025-33218 Overview

CVE-2025-33218 is an integer overflow vulnerability affecting the NVIDIA GPU Display Driver for Windows, specifically within the kernel mode layer (nvlddmkm.sys). This vulnerability allows an attacker with local access to trigger an integer overflow condition, which could potentially lead to code execution, privilege escalation, data tampering, denial of service, or information disclosure.

The vulnerability exists in the kernel-level driver component responsible for GPU management on Windows systems. When successfully exploited, an attacker could leverage this flaw to execute arbitrary code with elevated privileges, potentially gaining full control of the affected system.

Critical Impact

An integer overflow in the NVIDIA kernel mode driver could enable attackers to achieve code execution with kernel-level privileges, compromising the entire system.

Affected Products

• NVIDIA GPU Display Driver for Windows (nvlddmkm.sys)
• Windows systems with vulnerable NVIDIA display drivers installed
• Systems utilizing NVIDIA graphics hardware with affected driver versions

Discovery Timeline

• 2026-01-28 - CVE-2025-33218 published to NVD
• 2026-01-29 - Last updated in NVD database

Technical Details for CVE-2025-33218

Vulnerability Analysis

This vulnerability is classified as CWE-190 (Integer Overflow or Wraparound), a memory corruption flaw that occurs when an arithmetic operation attempts to create a numeric value that exceeds the maximum representable value for its type. In the context of nvlddmkm.sys, this overflow condition can corrupt memory structures used by the kernel driver, creating opportunities for malicious exploitation.

The local attack vector requires an attacker to have existing access to the target system. Once local access is established, the attacker can craft malicious input that triggers the integer overflow condition within the NVIDIA kernel driver. The vulnerability does not require user interaction to exploit, making it particularly dangerous in environments where attackers have achieved initial access.

Successful exploitation could result in multiple severe outcomes including arbitrary code execution at the kernel level, escalation from a low-privileged user to system-level access, tampering with data handled by the GPU driver, denial of service through system crashes, or disclosure of sensitive information from kernel memory.

Root Cause

The root cause of CVE-2025-33218 lies in improper handling of integer arithmetic operations within the nvlddmkm.sys kernel mode layer. When processing certain input values, the driver fails to validate that arithmetic operations will not exceed the maximum bounds of the integer type being used. This oversight allows attackers to provide specially crafted values that cause the integer to wrap around, resulting in unexpected small values that subsequently lead to undersized buffer allocations or incorrect bounds calculations.

Attack Vector

This vulnerability requires local access to exploit. An attacker must first gain access to the target Windows system through another attack vector or by having legitimate user credentials. Once local access is achieved, the attacker can interact with the NVIDIA driver through standard Windows interfaces or IOCTLs to trigger the vulnerable code path.

The attack does not require elevated privileges initially—an attacker with low-privilege access can exploit this vulnerability to escalate to higher privilege levels. No user interaction is required, meaning the exploit can be performed silently without any visible indication to logged-in users.

The integer overflow vulnerability manifests when specially crafted input values are passed to the NVIDIA kernel driver. These values are processed in arithmetic operations that lack proper bounds checking, causing the computed result to wrap around and produce an unexpected small value. This corrupted value is then used in subsequent memory operations, potentially allowing the attacker to write beyond allocated buffers or access memory regions that should be restricted. For complete technical details, see the NVIDIA Support Response.

Detection Methods for CVE-2025-33218

Indicators of Compromise

• Unexpected system crashes or BSODs referencing nvlddmkm.sys
• Unusual process behavior associated with NVIDIA driver components
• Evidence of privilege escalation attempts from low-privileged user accounts
• Suspicious IOCTL calls to NVIDIA driver interfaces
• Anomalous memory access patterns in kernel space related to GPU drivers

Detection Strategies

• Monitor Windows Event Logs for kernel driver crashes involving nvlddmkm.sys
• Implement endpoint detection rules for unusual driver interactions and IOCTL patterns
• Use SentinelOne's behavioral AI to detect exploitation attempts targeting kernel drivers
• Deploy integrity monitoring for NVIDIA driver files to detect tampering

Monitoring Recommendations

• Enable kernel auditing to track driver interactions and system calls
• Configure alerts for privilege escalation events following NVIDIA driver activity
• Monitor for unexpected GPU driver restarts or reinstallations
• Implement application control policies to restrict unauthorized access to driver interfaces

How to Mitigate CVE-2025-33218

Immediate Actions Required

• Update NVIDIA GPU Display Drivers to the latest patched version from NVIDIA
• Restrict local system access to authorized users only
• Implement application whitelisting to prevent unauthorized code execution
• Monitor affected systems for signs of exploitation attempts

Patch Information

NVIDIA has released security updates to address this vulnerability. Organizations should immediately check the NVIDIA Support Response for the latest driver versions containing the fix. Priority should be given to systems with critical workloads or those accessible to untrusted users.

Additional technical information is available from the NVD CVE-2025-33218 Detail page.

Workarounds

• Restrict local access to affected systems while awaiting driver updates
• Implement principle of least privilege to minimize the impact of potential exploitation
• Use SentinelOne endpoint protection to detect and block exploitation attempts
• Consider disabling non-essential GPU features in high-security environments until patched

# Verify NVIDIA driver version on Windows
nvidia-smi --query-gpu=driver_version --format=csv
# Check for available driver updates through NVIDIA GeForce Experience or manually at nvidia.com/drivers