CVE-2026-20769 in NPU Driver
Summary
by MITRE • 08/12/2026
Improper conditions check for the Intel(R) NPU Driver for all versions within Ring 3: User Applications may allow a denial of service. Unprivileged software adversary with an authenticated user combined with a low complexity attack may enable denial of service. This result may potentially occur via local access when attack requirements are not present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (low) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 08/12/2026
The vulnerability described represents a critical flaw in the Intel NPU Driver architecture that operates within Ring 3 user applications, creating a potential denial of service condition that could compromise system stability. This issue manifests through improper conditions checking mechanisms that fail to adequately validate system states or resource availability before executing driver operations. The vulnerability's classification as a ring 3 issue indicates it operates in user mode rather than kernel mode, yet its impact can still cascade into system-wide instability due to the driver's privileged role in managing hardware resources.
The attack vector for this vulnerability requires an authenticated user with unprivileged software access, making it particularly concerning as it exploits legitimate user access to create system disruption. The low complexity attack requirement suggests that adversaries need minimal technical expertise to exploit this condition, while the local access nature means the attack can be executed from within the system's boundaries without external network exposure. This characteristic aligns with common attack patterns documented in the attack tactics and techniques framework where adversaries leverage legitimate credentials to escalate privileges or create service disruptions.
From a technical perspective, the flaw likely involves insufficient validation of preconditions before driver operations execute, potentially allowing malformed input or unexpected system states to trigger abnormal termination sequences or resource exhaustion conditions. The impact assessment reveals high availability implications with no compromise to confidentiality or integrity, indicating that while the system's operational capacity is severely affected, data integrity remains intact and sensitive information is not directly exposed. This configuration suggests the vulnerability creates a service disruption rather than an information disclosure or modification threat.
The potential for denial of service through this mechanism can have cascading effects throughout the system as the NPU driver manages critical hardware acceleration functions that may be required by other applications or system services. When such a driver fails or becomes unresponsive, dependent applications may crash, system processes may hang, or the entire user interface could become unresponsive, depending on how heavily the NPU functionality is integrated into the operating environment.
Security practitioners should implement immediate mitigations including driver version updates from Intel, system monitoring for unusual resource consumption patterns, and access control restrictions to limit potential exploitation. The vulnerability's characteristics align with CWE-691, which addresses insufficient control flow management in software systems, and represents a typical attack surface that could be exploited within the MITRE ATT&CK framework under the privilege escalation and denial of service categories. Organizations should also consider implementing application whitelisting policies to restrict execution of potentially malicious code that could exploit this condition while maintaining operational continuity through proper incident response procedures.
The technical flaw demonstrates how seemingly minor validation issues in driver code can create significant system-wide impact, emphasizing the critical importance of comprehensive testing for all system components that operate with elevated privileges. This vulnerability serves as a reminder of the need for robust input validation and proper error handling mechanisms in all software components, particularly those that interface directly with hardware resources or operate at privileged system levels. The security implications extend beyond immediate denial of service to encompass potential system instability that could affect mission-critical operations where continuous availability is essential.