{"id":"CVE-2026-113753","kind":"vulnerability","aliases":["CVE-2026-113753"],"related":[],"title":"Windows Hyper-V: untrusted pointer lets a local user gain higher privileges","description":"Untrusted pointer dereference in Windows Hyper-V allows an authorized attacker to elevate privileges locally.","summary":"Microsoft Windows Hyper-V mishandles a pointer taken from untrusted input, so the code dereferences memory it should not. An attacker who already has an authorized local account can raise their privileges on the machine.","severity":"high","cvss":8.2,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["hyper-v","infrastructure","windows"],"not_affected_if":["hyper-v-not-enabled"],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:18:53+00:00","first_seen_at":"2026-11-10T19:24:38+00:00","triaged_at":"2026-11-10T19:34:31+00:00","updated_at":"2026-11-10T19:34:31+00:00","category":"infrastructure","confidence":0.5,"triage":{"at":"2026-11-10T19:34:31Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Windows Hyper-V: untrusted pointer lets a local user gain higher privileges","impact":"high","summary":"Microsoft Windows Hyper-V mishandles a pointer taken from untrusted input, so the code dereferences memory it should not. An attacker who already has an authorized local account can raise their privileges on the machine.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["windows","hyper-v"],"confidence":0.5,"fix_status":"unknown","needs_auth":"yes","worst_case":"local user gains SYSTEM-level control of the Windows host","analyst_note":"Find the Microsoft Security Update Guide entry for CVE-2026-113753 to get affected builds and the patch KB.","how_to_check":"- unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["hyper-v-not-enabled"],"who_is_affected":"Only Windows machines with the Hyper-V role enabled are in scope, and the attacker must already have a local account on that machine. The sources do not give affected Windows builds. unknown","user_interaction":"no","product_ecosystem":"","needs_special_setup":"yes","severity_if_unknown":"high"},"cost_usd":0.000663,"input_tokens":4494,"output_tokens":427,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Find the Microsoft Security Update Guide entry for CVE-2026-113753 to get affected builds and the patch KB.","search":"'-113753':16A,19A '-2026':15A,18A 'account':53B 'allow':69C 'alreadi':48B 'attack':46B,72C 'author':51B,71C 'code':39B 'cve':14A,17A 'derefer':40B,63C 'elev':74C 'gain':11A 'higher':12A 'hyper':3A,21B,28B,67C 'hyper-v':2A,20B,27B,66C 'infrastructur':23B 'input':36B 'let':7A 'local':9A,52B,76C 'machin':60B 'memori':41B 'microsoft':25B 'mishandl':30B 'pointer':6A,32B,62C 'privileg':13A,57B,75C 'rais':55B 'taken':33B 'untrust':5A,35B,61C 'user':10A 'v':4A,22B,29B,68C 'window':1A,24B,26B,65C","nicknames":[],"mitigations":[],"who_affected":"Only Windows machines with the Hyper-V role enabled are in scope, and the attacker must already have a local account on that machine. The sources do not give affected Windows builds. unknown","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["high","hyperv","infrastructure","windows"],"campaign_type":null,"search_a":"'-113753':16A,19A '-2026':15A,18A 'cve':14A,17A 'gain':11A 'higher':12A 'hyper':3A 'hyper-v':2A 'let':7A 'local':9A 'pointer':6A 'privileg':13A 'untrust':5A 'user':10A 'v':4A 'window':1A","search_b":"'account':53B 'alreadi':48B 'attack':46B 'author':51B 'code':39B 'derefer':40B 'hyper':21B,28B 'hyper-v':20B,27B 'infrastructur':23B 'input':36B 'local':52B 'machin':60B 'memori':41B 'microsoft':25B 'mishandl':30B 'pointer':32B 'privileg':57B 'rais':55B 'taken':33B 'untrust':35B 'v':22B,29B 'window':24B,26B","search_c":"'allow':69C 'attack':72C 'author':71C 'derefer':63C 'elev':74C 'hyper':67C 'hyper-v':66C 'local':76C 'pointer':62C 'privileg':75C 'untrust':61C 'v':68C 'window':65C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:18:53+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","cvss_by":"secure@microsoft.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-113753","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-113753","severity":null,"published_at":"2026-11-10T19:18:53+00:00","modified_at":"2026-11-10T19:18:53+00:00","first_seen_at":"2026-11-10T19:24:38+00:00","fetched_at":"2026-11-10T19:24:38+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"}