{"id":"CVE-2026-119393","kind":"vulnerability","aliases":["CVE-2026-119393"],"related":[],"title":"Windows Credential Manager: stack overflow lets a local user gain higher privileges","description":"Stack-based buffer overflow in Windows Credential Manager allows an authorized attacker to elevate privileges locally.","summary":"A stack-based buffer overflow in Windows Credential Manager lets an attacker who already has a local account raise their privileges. The sources do not describe the exact trigger or affected Windows builds.","severity":"high","cvss":7.8,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"Windows Credential Manager","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["credential-manager","infrastructure","windows"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:19:53+00:00","first_seen_at":"2026-11-10T19:24:56+00:00","triaged_at":"2026-11-10T19:40:32+00:00","updated_at":"2026-11-10T19:40:32+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-11-10T19:40:32Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Windows Credential Manager: stack overflow lets a local user gain higher privileges","impact":"high","summary":"A stack-based buffer overflow in Windows Credential Manager lets an attacker who already has a local account raise their privileges. The sources do not describe the exact trigger or affected Windows builds.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["windows","credential-manager"],"confidence":0.6,"fix_status":"unknown","needs_auth":"yes","worst_case":"local user gains SYSTEM-level control of the machine","analyst_note":"Confirm affected Windows builds and the Microsoft fixed-build list from the Microsoft security update guide for CVE-2026-119393.","how_to_check":"unknown","plain_action":"","product_name":"Windows Credential Manager","needs_analyst":true,"not_affected_if":[],"who_is_affected":"Windows machines where a user already has a local account, since the flaw is local privilege escalation. The sources do not name affected Windows versions or builds, so unknown.","user_interaction":"unknown","product_ecosystem":"vendor","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000665,"input_tokens":4494,"output_tokens":432,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Confirm affected Windows builds and the Microsoft fixed-build list from the Microsoft security update guide for CVE-2026-119393.","search":"'-119393':15A,18A '-2026':14A,17A 'account':45B 'affect':58B 'allow':70C 'alreadi':41B 'attack':39B,73C 'author':72C 'base':30B,63C 'buffer':31B,64C 'build':60B 'credenti':2A,23B,35B,68C 'credential':20A 'credential-manag':22B 'cve':13A,16A 'describ':53B 'elev':75C 'exact':55B 'gain':10A 'higher':11A 'infrastructur':25B 'let':6A,37B 'local':8A,44B,77C 'manag':3A,24B,36B,69C 'manager':21A 'overflow':5A,32B,65C 'privileg':12A,48B,76C 'rais':46B 'sourc':50B 'stack':4A,29B,62C 'stack-bas':28B,61C 'trigger':56B 'user':9A 'window':1A,26B,34B,59B,67C 'windows':19A","nicknames":[],"mitigations":[],"who_affected":"Windows machines where a user already has a local account, since the flaw is local privilege escalation. The sources do not name affected Windows versions or builds, so unknown.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":["credentialmanager","windowscredentialmanager"],"ptokens":["credential","manager","windows"],"labels":["credentialmanager","high","infrastructure","vendor","windows"],"campaign_type":null,"search_a":"'-119393':15A,18A '-2026':14A,17A 'credenti':2A 'credential':20A 'cve':13A,16A 'gain':10A 'higher':11A 'let':6A 'local':8A 'manag':3A 'manager':21A 'overflow':5A 'privileg':12A 'stack':4A 'user':9A 'window':1A 'windows':19A","search_b":"'account':45B 'affect':58B 'alreadi':41B 'attack':39B 'base':30B 'buffer':31B 'build':60B 'credenti':23B,35B 'credential-manag':22B 'describ':53B 'exact':55B 'infrastructur':25B 'let':37B 'local':44B 'manag':24B,36B 'overflow':32B 'privileg':48B 'rais':46B 'sourc':50B 'stack':29B 'stack-bas':28B 'trigger':56B 'window':26B,34B,59B","search_c":"'allow':70C 'attack':73C 'author':72C 'base':63C 'buffer':64C 'credenti':68C 'elev':75C 'local':77C 'manag':69C 'overflow':65C 'privileg':76C 'stack':62C 'stack-bas':61C 'window':67C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:19:53+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvss_by":"secure@microsoft.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-119393","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-119393","severity":null,"published_at":"2026-11-10T19:19:53+00:00","modified_at":"2026-11-10T19:19:54+00:00","first_seen_at":"2026-11-10T19:24:56+00:00","fetched_at":"2026-11-10T19:24:56+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"}