{"id":"CVE-2026-95872","kind":"vulnerability","aliases":["CVE-2026-95872"],"related":[],"title":"Windows USB Driver: heap overflow lets a local user gain higher privileges","description":"Heap-based buffer overflow in Windows USB Driver allows an authorized attacker to elevate privileges locally.","summary":"A heap-based buffer overflow in the Windows USB driver lets an authorized local user elevate their privileges. An attacker who already has a logon on the machine can gain system-level control.","severity":"high","cvss":7.8,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["endpoints","infrastructure","windows"],"not_affected_if":["no-local-accounts","patched-windows"],"how_to_check":"- Check the installed Windows build with `winver` and compare it against the update Microsoft lists for CVE-2026-95872.\n- Confirm the machine is patched in Windows Update history.","fix":null,"status":"open","published_at":"2026-11-10T19:21:40+00:00","first_seen_at":"2026-11-10T19:25:22+00:00","triaged_at":"2026-11-10T19:38:28+00:00","updated_at":"2026-11-10T19:38:28+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-11-10T19:38:28Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Windows USB Driver: heap overflow lets a local user gain higher privileges","impact":"high","summary":"A heap-based buffer overflow in the Windows USB driver lets an authorized local user elevate their privileges. An attacker who already has a logon on the machine can gain system-level control.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["windows","endpoints"],"confidence":0.6,"fix_status":"unknown","needs_auth":"yes","worst_case":"local user gains SYSTEM-level privileges on the machine","analyst_note":"Check the Microsoft Security Update Guide entry for CVE-2026-95872 to confirm affected Windows builds and the patch.","how_to_check":"- Check the installed Windows build with `winver` and compare it against the update Microsoft lists for CVE-2026-95872.\n- Confirm the machine is patched in Windows Update history.","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["no-local-accounts","patched-windows"],"who_is_affected":"Any Windows machine with the affected USB driver where a user already has a local account can be exposed. Attackers must already be authorized on the system, so shared hosts, terminal servers and multi-user machines carry the most risk. The sources do not say which Windows builds are affected.","user_interaction":"unknown","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000702,"input_tokens":4492,"output_tokens":505,"severity_before":"high"},"analyst_status":"working","analyst_note":"Check the Microsoft Security Update Guide entry for CVE-2026-95872 to confirm affected Windows builds and the patch.","search":"'-2026':14A,17A '-95872':15A,18A 'allow':66C 'alreadi':44B 'attack':42B,69C 'author':35B,68C 'base':25B,59C 'buffer':26B,60C 'control':56B 'cve':13A,16A 'driver':3A,32B,65C 'elev':38B,71C 'endpoint':19B 'gain':10A,52B 'heap':4A,24B,58C 'heap-bas':23B,57C 'higher':11A 'infrastructur':20B 'let':6A,33B 'level':55B 'local':8A,36B,73C 'logon':47B 'machin':50B 'overflow':5A,27B,61C 'privileg':12A,40B,72C 'system':54B 'system-level':53B 'usb':2A,31B,64C 'user':9A,37B 'window':1A,21B,30B,63C","nicknames":[],"mitigations":[],"who_affected":"Any Windows machine with the affected USB driver where a user already has a local account can be exposed. Attackers must already be authorized on the system, so shared hosts, terminal servers and multi-user machines carry the most risk. The sources do not say which Windows builds are affected.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["endpoints","high","infrastructure","windows"],"campaign_type":null,"search_a":"'-2026':14A,17A '-95872':15A,18A 'cve':13A,16A 'driver':3A 'gain':10A 'heap':4A 'higher':11A 'let':6A 'local':8A 'overflow':5A 'privileg':12A 'usb':2A 'user':9A 'window':1A","search_b":"'alreadi':44B 'attack':42B 'author':35B 'base':25B 'buffer':26B 'control':56B 'driver':32B 'elev':38B 'endpoint':19B 'gain':52B 'heap':24B 'heap-bas':23B 'infrastructur':20B 'let':33B 'level':55B 'local':36B 'logon':47B 'machin':50B 'overflow':27B 'privileg':40B 'system':54B 'system-level':53B 'usb':31B 'user':37B 'window':21B,30B","search_c":"'allow':66C 'attack':69C 'author':68C 'base':59C 'buffer':60C 'driver':65C 'elev':71C 'heap':58C 'heap-bas':57C 'local':73C 'overflow':61C 'privileg':72C 'usb':64C 'window':63C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:21:40+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-2026-95872","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-95872","severity":null,"published_at":"2026-11-10T19:21:40+00:00","modified_at":"2026-11-10T19:21:40+00:00","first_seen_at":"2026-11-10T19:25:22+00:00","fetched_at":"2026-11-10T19:25:22+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"}