CVE-2026-18485 in NI-PAL
Summary
by MITRE • 08/05/2026
There is a local privilege escalation vulnerability recently discovered in the NI-PAL kernel driver. This may allow a local, authenticated user to escalate privileges and execute arbitrary code. This vulnerability affects NI-PAL 26.3.1 and prior versions running on Microsoft Windows.
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Analysis
by VulDB Data Team • 08/05/2026
The recently discovered local privilege escalation vulnerability in the NI-PAL kernel driver represents a critical security flaw that undermines the integrity of Microsoft Windows systems. This vulnerability specifically targets versions 26.3.1 and earlier, creating an exploitable condition that allows authenticated users to elevate their privileges from standard user level to system-level access. The NI-PAL driver serves as a crucial component in National Instruments' data acquisition and control systems, making this vulnerability particularly concerning for industrial control environments where such drivers are commonly deployed.
The technical nature of this flaw stems from improper input validation and privilege handling within the kernel driver's implementation. When an authenticated user interacts with the vulnerable driver interface, the system fails to properly validate user-supplied parameters or maintain appropriate access controls during kernel operations. This allows malicious code execution within kernel space, bypassing standard security mechanisms such as user mode protection and privilege separation. The vulnerability likely manifests through improper handling of IOCTL (Input/Output Control) commands or memory management functions that should only be accessible to privileged system processes.
The operational impact of this vulnerability extends beyond simple privilege escalation, creating potential for complete system compromise when exploited by malicious actors. An attacker with local access can leverage this flaw to execute arbitrary code with kernel-level privileges, potentially leading to data exfiltration, system corruption, or further lateral movement within a network. The implications are particularly severe in industrial environments where National Instruments equipment controls critical infrastructure, as compromised systems could result in operational disruptions or safety hazards. The vulnerability's local nature means that exploitation requires only user authentication, making it accessible through various attack vectors including social engineering, credential theft, or initial access via other compromised systems.
Mitigation strategies should prioritize immediate patching of affected NI-PAL versions to address the underlying kernel driver flaws. Organizations must implement comprehensive monitoring for unusual kernel-level activities and privilege escalation attempts that could indicate exploitation attempts. System hardening measures including disabling unnecessary services and restricting local user accounts should complement the patch deployment. Security teams should also consider implementing runtime protection mechanisms such as kernel patch protection and exploit prevention tools to detect and block exploitation attempts. The vulnerability aligns with CWE-284 (Improper Access Control) and may map to ATT&CK techniques involving privilege escalation and persistence within Windows environments, emphasizing the need for layered defensive approaches that address both the specific flaw and broader attack surface considerations.
This vulnerability demonstrates the critical importance of kernel-level security in industrial control systems where traditional network-based protections may be insufficient. The combination of a local exploit with system-level privilege escalation creates an attack vector that can bypass many conventional security controls, making proactive remediation essential for maintaining operational integrity. Organizations should conduct thorough risk assessments to identify all systems running vulnerable NI-PAL versions and prioritize remediation efforts based on their operational criticality and exposure levels.