{"id":"CVE-2026-105542","kind":"vulnerability","aliases":["CVE-2026-105542"],"related":[],"title":"Windows NTFS: untrusted pointer lets a network attacker run code","description":"Untrusted pointer dereference in Windows NTFS allows an unauthorized attacker to execute code over a network.","summary":"Windows NTFS, the file system used by Windows, dereferences an untrusted pointer, a memory bug. Per the NVD description, an unauthorized attacker can execute code over a network.","severity":"high","cvss":8.8,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["infrastructure","ntfs","windows"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:17:55+00:00","first_seen_at":"2026-11-10T19:24:19+00:00","triaged_at":"2026-11-10T19:34:03+00:00","updated_at":"2026-11-10T19:34:03+00:00","category":"infrastructure","confidence":0.5,"triage":{"at":"2026-11-10T19:34:03Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"Windows NTFS: untrusted pointer lets a network attacker run code","impact":"high","summary":"Windows NTFS, the file system used by Windows, dereferences an untrusted pointer, a memory bug. Per the NVD description, an unauthorized attacker can execute code over a network.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["windows","ntfs"],"confidence":0.5,"fix_status":"unknown","needs_auth":"no","worst_case":"code runs remotely on the Windows machine","analyst_note":"Find the Microsoft security update guide entry for CVE-2026-105542 to confirm affected Windows builds, fixed versions and whether exploitation requires user action.","how_to_check":"unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":[],"who_is_affected":"Windows machines and servers using NTFS are the subject of this entry; the sources do not name affected builds or which network services are reachable. unknown","user_interaction":"unknown","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000647,"input_tokens":4490,"output_tokens":396,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Find the Microsoft security update guide entry for CVE-2026-105542 to confirm affected Windows builds, fixed versions and whether exploitation requires user action.","search":"'-105542':13A,16A '-2026':12A,15A 'allow':54C 'attack':8A,41B,57C 'bug':34B 'code':10A,44B,60C 'cve':11A,14A 'derefer':28B,50C 'descript':38B 'execut':43B,59C 'file':23B 'infrastructur':17B 'let':5A 'memori':33B 'network':7A,47B,63C 'ntfs':2A,18B,21B,53C 'nvd':37B 'per':35B 'pointer':4A,31B,49C 'run':9A 'system':24B 'unauthor':40B,56C 'untrust':3A,30B,48C 'use':25B 'window':1A,19B,20B,27B,52C","nicknames":[],"mitigations":[],"who_affected":"Windows machines and servers using NTFS are the subject of this entry; the sources do not name affected builds or which network services are reachable. unknown","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["high","infrastructure","ntfs","windows"],"campaign_type":null,"search_a":"'-105542':13A,16A '-2026':12A,15A 'attack':8A 'code':10A 'cve':11A,14A 'let':5A 'network':7A 'ntfs':2A 'pointer':4A 'run':9A 'untrust':3A 'window':1A","search_b":"'attack':41B 'bug':34B 'code':44B 'derefer':28B 'descript':38B 'execut':43B 'file':23B 'infrastructur':17B 'memori':33B 'network':47B 'ntfs':18B,21B 'nvd':37B 'per':35B 'pointer':31B 'system':24B 'unauthor':40B 'untrust':30B 'use':25B 'window':19B,20B,27B","search_c":"'allow':54C 'attack':57C 'code':60C 'derefer':50C 'execut':59C 'network':63C 'ntfs':53C 'pointer':49C 'unauthor':56C 'untrust':48C 'window':52C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:17:55+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cvss_by":"secure@microsoft.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-105542","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-105542","severity":null,"published_at":"2026-11-10T19:17:55+00:00","modified_at":"2026-11-10T19:17:56+00:00","first_seen_at":"2026-11-10T19:24:19+00:00","fetched_at":"2026-11-10T19:24:19+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"}