{"id":"CVE-2026-105569","kind":"vulnerability","aliases":["CVE-2026-105569"],"related":[],"title":"Windows: Cloud Files driver out-of-bounds read lets a local user gain privileges","description":"Out-of-bounds read in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.","summary":"A out-of-bounds read in the Windows Cloud Files Mini Filter Driver lets an authorized local user elevate their privileges. The sources do not describe the trigger beyond that.","severity":"high","cvss":7.8,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["cloud-files","infrastructure","onedrive","windows"],"not_affected_if":["no-local-untrusted-users"],"how_to_check":"- Confirm the Windows build with `winver` and compare it against the Microsoft security update for CVE-2026-105569","fix":null,"status":"open","published_at":"2026-11-10T19:17:59+00:00","first_seen_at":"2026-11-10T19:24:20+00:00","triaged_at":"2026-11-10T19:42:31+00:00","updated_at":"2026-11-10T19:42:31+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-11-10T19:42:31Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Windows: Cloud Files driver out-of-bounds read lets a local user gain privileges","impact":"high","summary":"A out-of-bounds read in the Windows Cloud Files Mini Filter Driver lets an authorized local user elevate their privileges. The sources do not describe the trigger beyond that.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["windows","cloud-files","onedrive"],"confidence":0.6,"fix_status":"unknown","needs_auth":"yes","worst_case":"local user gains SYSTEM-level privileges on the machine","analyst_note":"Find the Microsoft Security Response Center advisory for CVE-2026-105569 to confirm affected builds and the patched update.","how_to_check":"- Confirm the Windows build with `winver` and compare it against the Microsoft security update for CVE-2026-105569\n- unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["no-local-untrusted-users"],"who_is_affected":"Windows machines with the Cloud Files Mini Filter Driver present, which is the component behind OneDrive placeholder files and similar sync features. An attacker needs a valid local account first. unknown for whether every Windows edition is affected.","user_interaction":"no","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000693,"input_tokens":4508,"output_tokens":485,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Find the Microsoft Security Response Center advisory for CVE-2026-105569 to confirm affected builds and the patched update.","search":"'-105569':18A,21A '-2026':17A,20A 'allow':70C 'attack':73C 'author':44B,72C 'beyond':57B 'bound':8A,32B,61C 'cloud':2A,23B,37B,65C 'cloud-fil':22B 'cve':16A,19A 'describ':54B 'driver':4A,41B,69C 'elev':47B,75C 'file':3A,24B,38B,66C 'filter':40B,68C 'gain':14A 'infrastructur':25B 'let':10A,42B 'local':12A,45B,77C 'mini':39B,67C 'onedr':26B 'out-of-bound':5A,29B,58C 'privileg':15A,49B,76C 'read':9A,33B,62C 'sourc':51B 'trigger':56B 'user':13A,46B 'window':1A,27B,36B,64C","nicknames":[],"mitigations":[],"who_affected":"Windows machines with the Cloud Files Mini Filter Driver present, which is the component behind OneDrive placeholder files and similar sync features. An attacker needs a valid local account first. unknown for whether every Windows edition is affected.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["cloudfiles","high","infrastructure","onedrive","windows"],"campaign_type":null,"search_a":"'-105569':18A,21A '-2026':17A,20A 'bound':8A 'cloud':2A 'cve':16A,19A 'driver':4A 'file':3A 'gain':14A 'let':10A 'local':12A 'out-of-bound':5A 'privileg':15A 'read':9A 'user':13A 'window':1A","search_b":"'author':44B 'beyond':57B 'bound':32B 'cloud':23B,37B 'cloud-fil':22B 'describ':54B 'driver':41B 'elev':47B 'file':24B,38B 'filter':40B 'infrastructur':25B 'let':42B 'local':45B 'mini':39B 'onedr':26B 'out-of-bound':29B 'privileg':49B 'read':33B 'sourc':51B 'trigger':56B 'user':46B 'window':27B,36B","search_c":"'allow':70C 'attack':73C 'author':72C 'bound':61C 'cloud':65C 'driver':69C 'elev':75C 'file':66C 'filter':68C 'local':77C 'mini':67C 'out-of-bound':58C 'privileg':76C 'read':62C 'window':64C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:17:59+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-2026-105569","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-105569","severity":null,"published_at":"2026-11-10T19:17:59+00:00","modified_at":"2026-11-10T19:17:59+00:00","first_seen_at":"2026-11-10T19:24:20+00:00","fetched_at":"2026-11-10T19:24:20+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"}