{"id":"CVE-2026-119960","kind":"vulnerability","aliases":["CVE-2026-119960"],"related":[],"title":"Windows Hyper-V: uninitialized memory lets a local user gain higher privileges","description":"Use of uninitialized resource in Windows Hyper-V allows an authorized attacker to elevate privileges locally.","summary":"Windows Hyper-V has a flaw where it uses a resource before initializing it, letting an authorized local user elevate privileges. An attacker who already has a local account can gain higher system rights.","severity":"high","cvss":7.5,"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":"2026-11-10T19:20:20+00:00","first_seen_at":"2026-11-10T19:25:05+00:00","triaged_at":"2026-11-10T19:44:28+00:00","updated_at":"2026-11-10T19:44:28+00:00","category":"infrastructure","confidence":0.5,"triage":{"at":"2026-11-10T19:44:28Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Windows Hyper-V: uninitialized memory lets a local user gain higher privileges","impact":"high","summary":"Windows Hyper-V has a flaw where it uses a resource before initializing it, letting an authorized local user elevate privileges. An attacker who already has a local account can gain higher system rights.","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 privileges on the host","analyst_note":"Find the Microsoft security update guide entry for CVE-2026-119960 to confirm affected Windows builds and the fixed update.","how_to_check":"- unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["hyper-v-not-enabled"],"who_is_affected":"Affects Windows systems with the Hyper-V role enabled, where a local authorized user is present. Systems without Hyper-V installed are not affected by this description. The sources do not give affected builds or exact configuration details.","user_interaction":"no","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000663,"input_tokens":4492,"output_tokens":428,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Find the Microsoft security update guide entry for CVE-2026-119960 to confirm affected Windows builds and the fixed update.","search":"'-119960':16A,19A '-2026':15A,18A 'account':54B 'allow':69C 'alreadi':50B 'attack':48B,72C 'author':42B,71C 'cve':14A,17A 'elev':45B,74C 'flaw':31B 'gain':11A,56B 'higher':12A,57B 'hyper':3A,21B,27B,67C 'hyper-v':2A,20B,26B,66C 'infrastructur':23B 'initi':38B 'let':7A,40B 'local':9A,43B,53B,76C 'memori':6A 'privileg':13A,46B,75C 'resourc':36B,63C 'right':59B 'system':58B 'uniniti':5A,62C 'use':34B,60C 'user':10A,44B 'v':4A,22B,28B,68C 'window':1A,24B,25B,65C","nicknames":[],"mitigations":[],"who_affected":"Affects Windows systems with the Hyper-V role enabled, where a local authorized user is present. Systems without Hyper-V installed are not affected by this description. The sources do not give affected builds or exact configuration details.","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":"'-119960':16A,19A '-2026':15A,18A 'cve':14A,17A 'gain':11A 'higher':12A 'hyper':3A 'hyper-v':2A 'let':7A 'local':9A 'memori':6A 'privileg':13A 'uniniti':5A 'user':10A 'v':4A 'window':1A","search_b":"'account':54B 'alreadi':50B 'attack':48B 'author':42B 'elev':45B 'flaw':31B 'gain':56B 'higher':57B 'hyper':21B,27B 'hyper-v':20B,26B 'infrastructur':23B 'initi':38B 'let':40B 'local':43B,53B 'privileg':46B 'resourc':36B 'right':59B 'system':58B 'use':34B 'user':44B 'v':22B,28B 'window':24B,25B","search_c":"'allow':69C 'attack':72C 'author':71C 'elev':74C 'hyper':67C 'hyper-v':66C 'local':76C 'privileg':75C 'resourc':63C 'uniniti':62C 'use':60C 'v':68C 'window':65C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:20:20+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:L/AC:H/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-2026-119960","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-119960","severity":null,"published_at":"2026-11-10T19:20:20+00:00","modified_at":"2026-11-10T19:20:20+00:00","first_seen_at":"2026-11-10T19:25:05+00:00","fetched_at":"2026-11-10T19:25:05+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"}