CVE-2026-20769: Intel NPU Driver DOS Vulnerability

CVE-2026-20769 Overview

CVE-2026-20769 is an improper conditions check vulnerability [CWE-754] affecting all versions of the Intel(R) Neural Processing Unit (NPU) Driver in Ring 3 user applications. The flaw allows an authenticated local user to trigger a denial of service (DoS) condition on affected systems. Exploitation requires local access and low privileges but no user interaction and no special internal knowledge. The vulnerability primarily impacts system availability, with a limited integrity impact and no confidentiality exposure.

Critical Impact
An unprivileged authenticated user can trigger a denial of service against the Intel NPU Driver through a low-complexity local attack, disrupting availability of the affected system.

Affected Products

Intel(R) NPU Driver — all versions
Systems running Ring 3 user applications that interface with the Intel NPU Driver
Platforms shipping Intel Neural Processing Unit hardware acceleration

Discovery Timeline

2026-08-11 - CVE-2026-20769 published to NVD
2026-08-12 - Last updated in NVD database

Technical Details for CVE-2026-20769

Vulnerability Analysis

The vulnerability originates in the Intel NPU Driver's handling of conditions checked during Ring 3 user application interactions. The driver fails to properly verify one or more preconditions before proceeding with an operation, which aligns with the [CWE-754: Improper Check for Unusual or Exceptional Conditions] weakness class. When these conditions are not correctly validated, the driver enters an unexpected state that terminates or hangs functionality dependent on the NPU.

Because the NPU is used to offload machine learning and inference workloads, disruption of the driver can cascade into failures for any user-space application relying on hardware-accelerated AI operations. The attack does not compromise data confidentiality but reduces system availability for legitimate workloads.

Root Cause

The root cause is an improper conditions check within driver code paths invoked from user space. A specific state or input combination reaches an operation without adequate validation, causing the driver to fail closed and produce a denial of service. See the Intel Security Advisory for vendor-provided technical details.

Attack Vector

Exploitation requires local access with authenticated low-privilege credentials on the target system. An adversary running unprivileged code in Ring 3 can invoke the vulnerable driver interface to trigger the DoS condition. No user interaction is required, and attack complexity is low. Remote exploitation is not applicable.

No public proof-of-concept exploit is available at the time of publication, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.

Detection Methods for CVE-2026-20769

Indicators of Compromise

Unexpected crashes, hangs, or reinitialization events involving the Intel NPU Driver logged in system event channels
Repeated failures of AI or machine-learning workloads that depend on NPU hardware acceleration
Unprivileged processes making abnormal or high-frequency ioctl calls to the NPU device interface

Detection Strategies

Monitor kernel and driver telemetry for Intel NPU Driver fault, timeout, or reset events, correlating them to the invoking user process.
Baseline normal NPU device usage per host and alert on deviations from unprivileged user contexts.
Correlate driver failure events with process execution telemetry to identify the originating binary and user session.

Monitoring Recommendations

Ingest Windows Event Log and Linux kernel messages related to the Intel NPU Driver into a centralized SIEM or data lake for retention and hunting.
Track driver version inventory across endpoints to identify systems still running unpatched Intel NPU Driver builds.
Alert on repeated NPU driver crash-and-restart cycles from the same process or user account within short time windows.

How to Mitigate CVE-2026-20769

Immediate Actions Required

Inventory all endpoints and workstations running Intel NPU hardware and identify the currently installed NPU driver version.
Apply the updated Intel NPU Driver as directed in the Intel Security Advisory.
Restrict local logon rights on systems that process sensitive workloads to reduce the population of users who could trigger the DoS.

Patch Information

Intel has published guidance under Intel security advisory INTEL-SA-01456. Administrators should follow the vendor advisory for fixed driver versions and installation instructions. Refer to the Intel Security Advisory for the authoritative list of affected and remediated builds.

Workarounds

Where the NPU is not required, disable the Intel NPU device or unload the driver until the patched version can be deployed.
Enforce application allow-listing to prevent unauthorized unprivileged binaries from interacting with the NPU device interface.
Limit interactive and remote-shell access on affected hosts to trusted administrative accounts.

bash

# Configuration example: verify installed Intel NPU Driver version on Windows
pnputil /enum-drivers | findstr /i "Intel NPU"

# On Linux, check loaded module and version
lsmod | grep -i intel_vpu
modinfo intel_vpu | grep -E "^(version|filename):"