{"id":"CVE-2026-96981","kind":"vulnerability","aliases":["CVE-2026-96981"],"related":[],"title":"Windows PCI Bus Driver: out-of-bounds write lets physical attacker gain privileges","description":"Out-of-bounds write in Windows PCI Bus Driver allows an unauthorized attacker to elevate privileges with a physical attack.","summary":"A memory write past the end of a buffer in the Windows PCI Bus Driver lets an unauthorized attacker raise their privileges. The attack needs physical access to the machine.","severity":"medium","cvss":6.4,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["infrastructure","windows"],"not_affected_if":["no-physical-access"],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:22:20+00:00","first_seen_at":"2026-11-10T19:25:34+00:00","triaged_at":"2026-11-10T19:58:15+00:00","updated_at":"2026-11-10T19:58:15+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-11-10T19:58:15Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Windows PCI Bus Driver: out-of-bounds write lets physical attacker gain privileges","impact":"high","summary":"A memory write past the end of a buffer in the Windows PCI Bus Driver lets an unauthorized attacker raise their privileges. The attack needs physical access to the machine.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["windows"],"confidence":0.6,"fix_status":"unknown","needs_auth":"unknown","worst_case":"attacker with physical access gains elevated privileges on the machine","analyst_note":"Check the Microsoft Security Update Guide entry for CVE-2026-96981 for affected Windows builds and the fixed update.","how_to_check":"unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["no-physical-access"],"who_is_affected":"Windows machines with the PCI Bus Driver are exposed, and the attacker needs physical access to the hardware. The sources do not name affected Windows versions or a fixed build. Systems where physical access is tightly controlled carry less risk.","user_interaction":"unknown","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000668,"input_tokens":4508,"output_tokens":434,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-2026':16A,19A '-96981':17A,20A 'access':49B 'allow':63C 'attack':12A,41B,46B,66C,73C 'bound':8A,56C 'buffer':31B 'bus':3A,36B,61C 'cve':15A,18A 'driver':4A,37B,62C 'elev':68C 'end':28B 'gain':13A 'infrastructur':21B 'let':10A,38B 'machin':52B 'memori':24B 'need':47B 'out-of-bound':5A,53C 'past':26B 'pci':2A,35B,60C 'physic':11A,48B,72C 'privileg':14A,44B,69C 'rais':42B 'unauthor':40B,65C 'window':1A,22B,34B,59C 'write':9A,25B,57C","nicknames":[],"mitigations":[],"who_affected":"Windows machines with the PCI Bus Driver are exposed, and the attacker needs physical access to the hardware. The sources do not name affected Windows versions or a fixed build. Systems where physical access is tightly controlled carry less risk.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["infrastructure","medium","windows"],"campaign_type":null,"search_a":"'-2026':16A,19A '-96981':17A,20A 'attack':12A 'bound':8A 'bus':3A 'cve':15A,18A 'driver':4A 'gain':13A 'let':10A 'out-of-bound':5A 'pci':2A 'physic':11A 'privileg':14A 'window':1A 'write':9A","search_b":"'access':49B 'attack':41B,46B 'buffer':31B 'bus':36B 'driver':37B 'end':28B 'infrastructur':21B 'let':38B 'machin':52B 'memori':24B 'need':47B 'past':26B 'pci':35B 'physic':48B 'privileg':44B 'rais':42B 'unauthor':40B 'window':22B,34B 'write':25B","search_c":"'allow':63C 'attack':66C,73C 'bound':56C 'bus':61C 'driver':62C 'elev':68C 'out-of-bound':53C 'pci':60C 'physic':72C 'privileg':69C 'unauthor':65C 'window':59C 'write':57C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:22:20+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:P/AC:H/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-2026-96981","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-96981","severity":null,"published_at":"2026-11-10T19:22:20+00:00","modified_at":"2026-11-10T19:22:21+00:00","first_seen_at":"2026-11-10T19:25:34+00:00","fetched_at":"2026-11-10T19:25:34+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"}