CVE-2026-47518 in GPU Display Driver
Summary
by MITRE • 09/30/2026
NVIDIA GPU Display Driver for Windows and Linux contains a vulnerability in a secure microcontroller component, where incorrect permission assignment for a critical resource allows an attacker with privileged local access to modify protected memory that should be restricted. A successful exploit of this vulnerability might lead to code execution and escalation of privileges.
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Analysis
by VulDB Data Team • 09/30/2026
The identified vulnerability resides within the NVIDIA GPU Display Driver architecture, specifically affecting components operating on both Windows and Linux platforms. This flaw is located in a secure microcontroller subsystem embedded within the graphics processing unit infrastructure. The core technical deficiency involves an incorrect assignment of permissions for a critical resource managed by this microcontroller component. In typical hardware security models, such resources are designed to be isolated from standard operating system processes to prevent unauthorized access or modification. However, due to the misconfiguration in permission settings, the boundary between privileged and unprivileged execution contexts is compromised. This allows an entity with existing local administrative privileges on the host machine to bypass expected restrictions and interact directly with protected memory regions that should remain inaccessible through normal driver interfaces.
From a technical perspective, this represents a classic case of improper privilege management within hardware-assisted security mechanisms. The secure microcontroller is intended to enforce strict access controls over sensitive data structures used for display rendering, power management, or cryptographic operations. When permission checks are incorrectly implemented or omitted during resource allocation and access verification phases, the integrity of these protected memory segments is undermined. An attacker leveraging this flaw can write arbitrary data into memory locations that are supposed to be read-only or restricted to kernel-level operations only. This capability effectively neutralizes several layers of defense typically provided by hardware isolation features, allowing software running at a high privilege level on the operating system to manipulate low-level GPU state in ways not intended by the vendor's security design.
The operational impact of this vulnerability is significant due to its potential for lateral movement and persistent control within an enterprise environment. A successful exploitation does not merely result in local information disclosure but enables arbitrary code execution with elevated privileges. Since the attacker already requires privileged local access, the primary risk vector involves insider threats or attackers who have gained initial foothold through other means such as phishing or unpatched service vulnerabilities. By exploiting this GPU driver flaw, an adversary can escalate their rights to potentially full system control, bypassing traditional endpoint detection and response mechanisms that rely on standard operating system boundaries. This could facilitate the installation of rootkits, persistence mechanisms, or further exploitation of network services running on the compromised host.
In terms of industry classification standards, this vulnerability aligns with CWE-269 Improper Privilege Management, as it involves a failure to enforce appropriate access controls for critical resources. Furthermore, from an offensive security perspective such as MITRE ATT&CK, this behavior corresponds to techniques involving privilege escalation and potentially defense evasion through manipulation of hardware-level components. The ability to modify protected memory allows attackers to alter execution flows or inject malicious code into trusted processes, which maps closely to tactics like Process Injection or Hijacking Execution Flow within the broader context of post-exploitation activities.
Mitigation strategies must focus on both immediate remediation and long-term architectural improvements. NVIDIA has released updated drivers that correct the permission assignments for the affected microcontroller resources. Organizations should prioritize deploying these patches across all endpoints utilizing vulnerable GPU hardware, particularly those running Windows or Linux operating systems where display driver interactions are frequent. Additionally, implementing strict application whitelisting policies can limit the ability of unauthorized processes to interact with graphics subsystems even if vulnerabilities exist. Security teams should also monitor for anomalous behavior in system logs related to high-privilege process activity and memory access patterns that deviate from baseline norms. Regular auditing of driver versions and adherence to vendor security advisories remain critical components of maintaining a robust defense posture against hardware-level exploits.