{"id":"CVE-2026-122167","kind":"vulnerability","aliases":["CVE-2026-122167"],"related":[],"title":"Windows USB driver heap overflow lets a local attacker gain system privileges","description":"Heap-based buffer overflow in Windows USB Driver allows an unauthorized attacker to elevate privileges with a physical attack.","summary":"A heap-based buffer overflow in the Windows USB driver can be triggered by an attacker with physical access to a machine. Successful exploitation lets that attacker elevate their privileges.","severity":"medium","cvss":6.8,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["infrastructure","usb","windows"],"not_affected_if":["no-physical-access"],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:20:33+00:00","first_seen_at":"2026-11-10T19:25:10+00:00","triaged_at":"2026-11-10T19:55:40+00:00","updated_at":"2026-11-10T19:55:40+00:00","category":"infrastructure","confidence":0.5,"triage":{"at":"2026-11-10T19:55:40Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Windows USB driver heap overflow lets a local attacker gain system privileges","impact":"high","summary":"A heap-based buffer overflow in the Windows USB driver can be triggered by an attacker with physical access to a machine. Successful exploitation lets that attacker elevate their privileges.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["windows","usb"],"confidence":0.5,"fix_status":"unknown","needs_auth":"unknown","worst_case":"Attacker with physical access gains elevated system privileges on Windows","analyst_note":"Find the affected Windows builds and the Microsoft patch from the NVD entry and the Microsoft Security Response Center advisory.","how_to_check":"- unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["no-physical-access"],"who_is_affected":"Windows machines with USB ports that an unauthorized person could physically reach. The sources do not name affected Windows builds or the patch level that fixes it.","user_interaction":"unknown","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000653,"input_tokens":4502,"output_tokens":406,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-122167':15A,18A '-2026':14A,17A 'access':41B 'allow':62C 'attack':9A,38B,49B,65C,72C 'base':25B,55C 'buffer':26B,56C 'cve':13A,16A 'driver':3A,32B,61C 'elev':50B,67C 'exploit':46B 'gain':10A 'heap':4A,24B,54C 'heap-bas':23B,53C 'infrastructur':19B 'let':6A,47B 'local':8A 'machin':44B 'overflow':5A,27B,57C 'physic':40B,71C 'privileg':12A,52B,68C 'success':45B 'system':11A 'trigger':35B 'unauthor':64C 'usb':2A,20B,31B,60C 'window':1A,21B,30B,59C","nicknames":[],"mitigations":[],"who_affected":"Windows machines with USB ports that an unauthorized person could physically reach. The sources do not name affected Windows builds or the patch level that fixes it.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["infrastructure","medium","usb","windows"],"campaign_type":null,"search_a":"'-122167':15A,18A '-2026':14A,17A 'attack':9A 'cve':13A,16A 'driver':3A 'gain':10A 'heap':4A 'let':6A 'local':8A 'overflow':5A 'privileg':12A 'system':11A 'usb':2A 'window':1A","search_b":"'access':41B 'attack':38B,49B 'base':25B 'buffer':26B 'driver':32B 'elev':50B 'exploit':46B 'heap':24B 'heap-bas':23B 'infrastructur':19B 'let':47B 'machin':44B 'overflow':27B 'physic':40B 'privileg':52B 'success':45B 'trigger':35B 'usb':20B,31B 'window':21B,30B","search_c":"'allow':62C 'attack':65C,72C 'base':55C 'buffer':56C 'driver':61C 'elev':67C 'heap':54C 'heap-bas':53C 'overflow':57C 'physic':71C 'privileg':68C 'unauthor':64C 'usb':60C 'window':59C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:20:33+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvss_by":"secure@microsoft.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-122167","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-122167","severity":null,"published_at":"2026-11-10T19:20:33+00:00","modified_at":"2026-11-10T19:20:33+00:00","first_seen_at":"2026-11-10T19:25:10+00:00","fetched_at":"2026-11-10T19:25:10+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"}