{"id":"CVE-2026-119912","kind":"vulnerability","aliases":["CVE-2026-119912"],"related":[],"title":"Windows Kernel: double free lets a local user gain higher privileges","description":"Double free in Windows Kernel allows an authorized attacker to elevate privileges locally.","summary":"A double free bug in the Windows kernel lets a user who already has local access trigger memory corruption. An attacker can use it to elevate privileges on the affected machine.","severity":"medium","cvss":6.7,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"Windows Kernel","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["infrastructure","windows"],"not_affected_if":["no-local-user-access"],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:20:12+00:00","first_seen_at":"2026-11-10T19:25:02+00:00","triaged_at":"2026-11-10T19:55:53+00:00","updated_at":"2026-11-10T19:55:53+00:00","category":"infrastructure","confidence":0.5,"triage":{"at":"2026-11-10T19:55:53Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Windows Kernel: double free lets a local user gain higher privileges","impact":"high","summary":"A double free bug in the Windows kernel lets a user who already has local access trigger memory corruption. An attacker can use it to elevate privileges on the affected machine.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["windows"],"confidence":0.5,"fix_status":"unknown","needs_auth":"yes","worst_case":"local user gains kernel-level privileges on the machine","analyst_note":"Find the affected Windows builds and the Microsoft patch from the NVD entry at https://nvd.nist.gov/vuln/detail/CVE-2026-119912 and the Microsoft Security Update Guide.","how_to_check":"- unknown","plain_action":"","product_name":"Windows Kernel","needs_analyst":true,"not_affected_if":["no-local-user-access"],"who_is_affected":"Affects Windows machines where an attacker already has a local, authorized account. The sources do not name affected Windows builds or the patch level. unknown","user_interaction":"no","product_ecosystem":"vendor","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000666,"input_tokens":4475,"output_tokens":436,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-119912':14A,17A '-2026':13A,16A 'access':37B 'affect':51B 'allow':58C 'alreadi':34B 'attack':42B,61C 'author':60C 'bug':25B 'corrupt':40B 'cve':12A,15A 'doubl':3A,23B,53C 'elev':47B,63C 'free':4A,24B,54C 'gain':9A 'higher':10A 'infrastructur':20B 'kernel':2A,19A,29B,57C 'let':5A,30B 'local':7A,36B,65C 'machin':52B 'memori':39B 'privileg':11A,48B,64C 'trigger':38B 'use':44B 'user':8A,32B 'window':1A,21B,28B,56C 'windows':18A","nicknames":[],"mitigations":[],"who_affected":"Affects Windows machines where an attacker already has a local, authorized account. The sources do not name affected Windows builds or the patch level. unknown","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":["kernel","windowskernel"],"ptokens":["kernel","windows"],"labels":["infrastructure","medium","vendor","windows"],"campaign_type":null,"search_a":"'-119912':14A,17A '-2026':13A,16A 'cve':12A,15A 'doubl':3A 'free':4A 'gain':9A 'higher':10A 'kernel':2A,19A 'let':5A 'local':7A 'privileg':11A 'user':8A 'window':1A 'windows':18A","search_b":"'access':37B 'affect':51B 'alreadi':34B 'attack':42B 'bug':25B 'corrupt':40B 'doubl':23B 'elev':47B 'free':24B 'infrastructur':20B 'kernel':29B 'let':30B 'local':36B 'machin':52B 'memori':39B 'privileg':48B 'trigger':38B 'use':44B 'user':32B 'window':21B,28B","search_c":"'allow':58C 'attack':61C 'author':60C 'doubl':53C 'elev':63C 'free':54C 'kernel':57C 'local':65C 'privileg':64C 'window':56C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:20:12+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","cvss_by":"secure@microsoft.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-119912","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-119912","severity":null,"published_at":"2026-11-10T19:20:12+00:00","modified_at":"2026-11-10T19:20:12+00:00","first_seen_at":"2026-11-10T19:25:02+00:00","fetched_at":"2026-11-10T19:25:02+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"}