{"id":"CVE-2026-119856","kind":"vulnerability","aliases":["CVE-2026-119856"],"related":[],"title":"Windows Win32K: local user can read sensitive system information","description":"Exposure of sensitive system information to an unauthorized control sphere in Windows Win32K allows an authorized attacker to disclose information locally.","summary":"Microsoft's Windows Win32K kernel graphics component exposes sensitive system information to an unauthorized control sphere. An authorized local attacker can read that information on the affected machine.","severity":"medium","cvss":5.5,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["infrastructure","win32k","windows"],"not_affected_if":["no-local-untrusted-users"],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:20:03+00:00","first_seen_at":"2026-11-10T19:24:59+00:00","triaged_at":"2026-11-10T20:00:38+00:00","updated_at":"2026-11-10T20:00:38+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-11-10T20:00:38Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Windows Win32K: local user can read sensitive system information","impact":"low","summary":"Microsoft's Windows Win32K kernel graphics component exposes sensitive system information to an unauthorized control sphere. An authorized local attacker can read that information on the affected machine.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["windows","win32k"],"confidence":0.6,"fix_status":"unknown","needs_auth":"yes","worst_case":"local user reads sensitive system information from the kernel","analyst_note":"Check the Microsoft Security Update Guide entry for CVE-2026-119856 for affected builds and the fixed update.","how_to_check":"unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["no-local-untrusted-users"],"who_is_affected":"Windows machines with the affected Win32K component; the attacker needs a local account on the machine. Systems where no untrusted users can log on are lower risk. The sources do not name affected Windows builds.","user_interaction":"no","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000653,"input_tokens":4500,"output_tokens":405,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-119856':12A,15A '-2026':11A,14A 'affect':45B 'allow':60C 'attack':38B,63C 'author':36B,62C 'compon':25B 'control':33B,55C 'cve':10A,13A 'disclos':65C 'expos':26B 'exposur':47C 'graphic':24B 'inform':9A,29B,42B,51C,66C 'infrastructur':16B 'kernel':23B 'local':3A,37B,67C 'machin':46B 'microsoft':19B 'read':6A,40B 'sensit':7A,27B,49C 'sphere':34B,56C 'system':8A,28B,50C 'unauthor':32B,54C 'user':4A 'win32k':2A,17B,22B,59C 'window':1A,18B,21B,58C","nicknames":[],"mitigations":[],"who_affected":"Windows machines with the affected Win32K component; the attacker needs a local account on the machine. Systems where no untrusted users can log on are lower risk. The sources do not name affected Windows builds.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["infrastructure","medium","win32k","windows"],"campaign_type":null,"search_a":"'-119856':12A,15A '-2026':11A,14A 'cve':10A,13A 'inform':9A 'local':3A 'read':6A 'sensit':7A 'system':8A 'user':4A 'win32k':2A 'window':1A","search_b":"'affect':45B 'attack':38B 'author':36B 'compon':25B 'control':33B 'expos':26B 'graphic':24B 'inform':29B,42B 'infrastructur':16B 'kernel':23B 'local':37B 'machin':46B 'microsoft':19B 'read':40B 'sensit':27B 'sphere':34B 'system':28B 'unauthor':32B 'win32k':17B,22B 'window':18B,21B","search_c":"'allow':60C 'attack':63C 'author':62C 'control':55C 'disclos':65C 'exposur':47C 'inform':51C,66C 'local':67C 'sensit':49C 'sphere':56C 'system':50C 'unauthor':54C 'win32k':59C 'window':58C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:20:03+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","cvss_by":"secure@microsoft.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-119856","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-119856","severity":null,"published_at":"2026-11-10T19:20:03+00:00","modified_at":"2026-11-10T19:20:03+00:00","first_seen_at":"2026-11-10T19:24:59+00:00","fetched_at":"2026-11-10T19:24:59+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"}