{"id":"CVE-2026-118137","kind":"vulnerability","aliases":["CVE-2026-118137"],"related":[],"title":"Windows FTP Service: improper authorization lets a local user gain higher privileges","description":"Improper authorization in Windows FTP Service allows an authorized attacker to elevate privileges locally.","summary":"Windows FTP Service has an authorization flaw that lets an already-authorized local attacker elevate their privileges. The sources give a CVSS score of 7.8 but no further detail on the affected versions or exploit conditions.","severity":"high","cvss":7.8,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"Windows FTP Service","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["ftp","infrastructure","windows"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:19:32+00:00","first_seen_at":"2026-11-10T19:24:48+00:00","triaged_at":"2026-11-10T19:40:46+00:00","updated_at":"2026-11-10T19:40:46+00:00","category":"infrastructure","confidence":0.5,"triage":{"at":"2026-11-10T19:40:46Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Windows FTP Service: improper authorization lets a local user gain higher privileges","impact":"high","summary":"Windows FTP Service has an authorization flaw that lets an already-authorized local attacker elevate their privileges. The sources give a CVSS score of 7.8 but no further detail on the affected versions or exploit conditions.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["windows","ftp"],"confidence":0.5,"fix_status":"unknown","needs_auth":"yes","worst_case":"local user gains higher privileges on the Windows host","analyst_note":"Confirm affected Windows builds and whether a Microsoft security update exists, from the Microsoft Security Response Center advisory for CVE-2026-118137.","how_to_check":"- unknown","plain_action":"","product_name":"Windows FTP Service","needs_analyst":true,"not_affected_if":[],"who_is_affected":"Systems running the Windows FTP Service role are the ones to look at. The sources do not state which Windows versions or FTP configurations are affected, so unknown.","user_interaction":"no","product_ecosystem":"vendor","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000669,"input_tokens":4482,"output_tokens":441,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Confirm affected Windows builds and whether a Microsoft security update exists, from the Microsoft Security Response Center advisory for CVE-2026-118137.","search":"'-118137':15A,18A '-2026':14A,17A '7.8':50B 'affect':57B 'allow':68C 'alreadi':36B 'already-author':35B 'attack':39B,71C 'author':5A,30B,37B,63C,70C 'condit':61B 'cve':13A,16A 'cvss':47B 'detail':54B 'elev':40B,73C 'exploit':60B 'flaw':31B 'ftp':2A,20A,22B,26B,66C 'gain':10A 'give':45B 'higher':11A 'improp':4A,62C 'infrastructur':23B 'let':6A,33B 'local':8A,38B,75C 'privileg':12A,42B,74C 'score':48B 'servic':3A,27B,67C 'service':21A 'sourc':44B 'user':9A 'version':58B 'window':1A,24B,25B,65C 'windows':19A","nicknames":[],"mitigations":[],"who_affected":"Systems running the Windows FTP Service role are the ones to look at. The sources do not state which Windows versions or FTP configurations are affected, so unknown.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":["ftpservice","windowsftpservice"],"ptokens":["ftp","service","windows"],"labels":["ftp","high","infrastructure","vendor","windows"],"campaign_type":null,"search_a":"'-118137':15A,18A '-2026':14A,17A 'author':5A 'cve':13A,16A 'ftp':2A,20A 'gain':10A 'higher':11A 'improp':4A 'let':6A 'local':8A 'privileg':12A 'servic':3A 'service':21A 'user':9A 'window':1A 'windows':19A","search_b":"'7.8':50B 'affect':57B 'alreadi':36B 'already-author':35B 'attack':39B 'author':30B,37B 'condit':61B 'cvss':47B 'detail':54B 'elev':40B 'exploit':60B 'flaw':31B 'ftp':22B,26B 'give':45B 'infrastructur':23B 'let':33B 'local':38B 'privileg':42B 'score':48B 'servic':27B 'sourc':44B 'version':58B 'window':24B,25B","search_c":"'allow':68C 'attack':71C 'author':63C,70C 'elev':73C 'ftp':66C 'improp':62C 'local':75C 'privileg':74C 'servic':67C 'window':65C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:19:32+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-2026-118137","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-118137","severity":null,"published_at":"2026-11-10T19:19:32+00:00","modified_at":"2026-11-10T19:19:32+00:00","first_seen_at":"2026-11-10T19:24:48+00:00","fetched_at":"2026-11-10T19:24:48+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"}