CVE-2025-32735: 
Linux Debian vulnerability analysis and mitigation

CVE-2025-32735 is a denial-of-service vulnerability caused by an improper conditions check in firmware for Intel Neural Processing Unit (NPU) drivers. It affects Intel NPU Driver firmware within Ring 1 (Device Drivers) and was publicly disclosed on February 10, 2026, via Intel Security Advisory INTEL-SA-01403. The vulnerability has a CVSS v3.1 base score of 5.5 (Medium) and a CVSS v4.0 base score of 6.8 (Medium) (Intel Advisory, Red Hat CVE).

The root cause is classified as CWE-754 (Improper Check for Unusual or Exceptional Conditions), where the Intel NPU driver firmware fails to properly validate or handle exceptional conditions. An authenticated local user with low privileges can exploit this flaw with low attack complexity and no user interaction required, triggering a denial-of-service condition against the NPU subsystem. No special internal knowledge or elevated privileges are needed beyond a standard authenticated session (Intel Advisory, Red Hat CVE).

Successful exploitation results in a high availability impact to the vulnerable system, specifically crashing or disabling NPU functionality. There is no impact to confidentiality or integrity of the system or any subsequent systems. The scope is limited to the local system's NPU driver, with no lateral movement potential or data exposure risk identified (Intel Advisory).

No public proof-of-concept exploit code or in-the-wild exploitation has been reported for CVE-2025-32735. The EPSS score is approximately 0.013%, indicating a very low probability of exploitation in the near term. The vulnerability is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, and no threat actor attribution has been identified (Red Hat CVE).

Intel has released a patch addressing this vulnerability, detailed in security advisory INTEL-SA-01403. Users should update their Intel NPU drivers to the fixed firmware version specified in the advisory. No configuration-based workarounds have been publicly documented; upgrading to the patched driver version is the recommended remediation (Intel Advisory).