{"id":"CVE-2026-40705","kind":"vulnerability","aliases":["CVE-2026-40705"],"related":[],"title":"Intel NPU driver: improper locking lets a local user crash the system","description":"Improper resource locking for the Intel(R) NPU Drivers before version 32.0.100.4778 within Ring 1: Device Drivers 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 (none) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.","summary":"The Intel NPU driver before 32.0.100.4778 has improper resource locking in its Ring 1 device driver code. A local, authenticated user with low-complexity access can cause a denial of service, with no confidentiality or integrity impact.","severity":"medium","cvss":6.8,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["infrastructure","intel","laptops","npu-driver","windows"],"not_affected_if":["fixed-driver","no-intel-npu","no-local-users"],"how_to_check":"- Check the installed Intel NPU driver version in Device Manager under the neural processing unit device, or with the Intel driver tooling\n- Treat any version below `32.0.100.4778` as affected","fix":"- Intel NPU Drivers `32.0.100.4778` or later","status":"open","published_at":"2026-11-10T17:17:43+00:00","first_seen_at":"2026-11-10T17:22:43+00:00","triaged_at":"2026-11-10T17:24:08+00:00","updated_at":"2026-11-10T17:24:08+00:00","category":"infrastructure","confidence":0.7,"triage":{"at":"2026-11-10T17:24:08Z","model":"claude-haiku-5-5","output":{"fix":"- Intel NPU Drivers `32.0.100.4778` or later","reach":"local","title":"Intel NPU driver: improper locking lets a local user crash the system","impact":"low","summary":"The Intel NPU driver before 32.0.100.4778 has improper resource locking in its Ring 1 device driver code. A local, authenticated user with low-complexity access can cause a denial of service, with no confidentiality or integrity impact.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["intel","npu-driver","windows","laptops"],"confidence":0.7,"fix_status":"available","needs_auth":"yes","worst_case":"local user crashes the system through denial of service","analyst_note":"","how_to_check":"- Check the installed Intel NPU driver version in Device Manager under the neural processing unit device, or with the Intel driver tooling\n- Treat any version below `32.0.100.4778` as affected","plain_action":"","product_name":"","needs_analyst":false,"not_affected_if":["no-intel-npu","fixed-driver","no-local-users"],"who_is_affected":"Systems with an Intel NPU and an NPU driver older than 32.0.100.4778 are exposed. The attacker needs a local authenticated account on the machine, so shared workstations and multi-user hosts matter most. Machines without an Intel NPU or with the fixed driver can skip it.","user_interaction":"no","product_ecosystem":"","needs_special_setup":"no","severity_if_unknown":"medium"},"cost_usd":0.000724,"input_tokens":4666,"output_tokens":514,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-2026':14A,17A '-40705':15A,18A '1':39B,78C '32.0.100.4778':31B,75C 'access':51B,112C 'adversari':89C 'allow':82C 'attack':99C,114C 'authent':45B,92C 'avail':139C,154C 'caus':53B 'code':42B 'combin':94C 'complex':50B,98C 'confidenti':60B,134C,149C 'crash':10A 'cve':13A,16A 'denial':55B,84C,102C 'devic':40B,79C 'driver':3A,24B,29B,41B,72C,80C 'enabl':101C 'high':140C 'impact':63B,132C,156C 'improp':4A,33B,64C 'infrastructur':19B 'integr':62B,136C,151C 'intel':1A,20B,27B,69C 'interact':127C 'intern':121C 'knowledg':122C 'laptop':21B 'let':6A 'local':8A,44B,111C 'lock':5A,35B,66C 'low':49B,97C 'low-complex':48B 'may':81C,100C,107C,131C 'none':135C,137C,150C,152C,155C 'npu':2A,23B,28B,71C 'npu-driv':22B 'occur':109C 'potenti':108C,129C 'present':118C 'r':70C 'requir':115C,124C 'resourc':34B,65C 'result':106C,145C 'ring':38B,77C 'servic':57B,86C,104C 'softwar':88C 'special':120C 'subsequ':147C 'system':12A,144C,148C 'unprivileg':87C 'user':9A,46B,93C,126C 'version':74C 'via':110C 'vulner':130C,143C 'window':25B 'within':76C 'without':119C","nicknames":[],"mitigations":[],"who_affected":"Systems with an Intel NPU and an NPU driver older than 32.0.100.4778 are exposed. The attacker needs a local authenticated account on the machine, so shared workstations and multi-user hosts matter most. Machines without an Intel NPU or with the fixed driver can skip it.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["infrastructure","intel","laptops","medium","npudriver","windows"],"campaign_type":null,"search_a":"'-2026':14A,17A '-40705':15A,18A 'crash':10A 'cve':13A,16A 'driver':3A 'improp':4A 'intel':1A 'let':6A 'local':8A 'lock':5A 'npu':2A 'system':12A 'user':9A","search_b":"'1':39B '32.0.100.4778':31B 'access':51B 'authent':45B 'caus':53B 'code':42B 'complex':50B 'confidenti':60B 'denial':55B 'devic':40B 'driver':24B,29B,41B 'impact':63B 'improp':33B 'infrastructur':19B 'integr':62B 'intel':20B,27B 'laptop':21B 'local':44B 'lock':35B 'low':49B 'low-complex':48B 'npu':23B,28B 'npu-driv':22B 'resourc':34B 'ring':38B 'servic':57B 'user':46B 'window':25B","search_c":"'1':78C '32.0.100.4778':75C 'access':112C 'adversari':89C 'allow':82C 'attack':99C,114C 'authent':92C 'avail':139C,154C 'combin':94C 'complex':98C 'confidenti':134C,149C 'denial':84C,102C 'devic':79C 'driver':72C,80C 'enabl':101C 'high':140C 'impact':132C,156C 'improp':64C 'integr':136C,151C 'intel':69C 'interact':127C 'intern':121C 'knowledg':122C 'local':111C 'lock':66C 'low':97C 'may':81C,100C,107C,131C 'none':135C,137C,150C,152C,155C 'npu':71C 'occur':109C 'potenti':108C,129C 'present':118C 'r':70C 'requir':115C,124C 'resourc':65C 'result':106C,145C 'ring':77C 'servic':86C,104C 'softwar':88C 'special':120C 'subsequ':147C 'system':144C,148C 'unprivileg':87C 'user':93C,126C 'version':74C 'via':110C 'vulner':130C,143C 'within':76C 'without':119C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T17:17:43+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","cvss_by":"secure@intel.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-40705","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40705","severity":null,"published_at":"2026-11-10T17:17:43+00:00","modified_at":"2026-11-10T17:17:43+00:00","first_seen_at":"2026-11-10T17:22:43+00:00","fetched_at":"2026-11-10T17:22:43+00:00","note":null}],"documents":[],"disclosures":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}