{"id":"CVE-2026-105565","kind":"vulnerability","aliases":["CVE-2026-105565"],"related":[],"title":"Windows MIDI Service: use-after-free lets local user gain higher privileges","description":"Use after free in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.","summary":"A memory-handling bug in the Windows MIDI Service Module lets an attacker who already has a local account free memory that is still in use. The attacker can use this to elevate privileges on the machine.","severity":"high","cvss":7.0,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["infrastructure","local-accounts","windows"],"not_affected_if":["no-local-untrusted-users"],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:17:59+00:00","first_seen_at":"2026-11-10T19:24:20+00:00","triaged_at":"2026-11-10T19:54:01+00:00","updated_at":"2026-11-10T19:54:01+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-11-10T19:54:01Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Windows MIDI Service: use-after-free lets local user gain higher privileges","impact":"high","summary":"A memory-handling bug in the Windows MIDI Service Module lets an attacker who already has a local account free memory that is still in use. The attacker can use this to elevate privileges on the machine.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["windows","local-accounts"],"confidence":0.6,"fix_status":"unknown","needs_auth":"yes","worst_case":"local user gains system-level privileges on the machine","analyst_note":"Find the Microsoft Security Update Guide entry for CVE-2026-105565 to confirm affected Windows builds, fixed versions and whether the MIDI service must be enabled.","how_to_check":"unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["no-local-untrusted-users"],"who_is_affected":"Affects Windows machines running the MIDI Service Module; the attacker must already have an authorized local account. The sources do not say which Windows builds or configurations are exposed. unknown","user_interaction":"no","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000663,"input_tokens":4484,"output_tokens":429,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Find the Microsoft Security Update Guide entry for CVE-2026-105565 to confirm affected Windows builds, fixed versions and whether the MIDI service must be enabled.","search":"'-105565':16A,19A '-2026':15A,18A 'account':23B,44B 'allow':71C 'alreadi':40B 'attack':38B,53B,74C 'author':73C 'bug':29B 'cve':14A,17A 'elev':58B,76C 'free':7A,45B,65C 'gain':11A 'handl':28B 'higher':12A 'infrastructur':20B 'let':8A,36B 'local':9A,22B,43B,78C 'local-account':21B 'machin':62B 'memori':27B,46B 'memory-handl':26B 'midi':2A,33B,68C 'modul':35B,70C 'privileg':13A,59B,77C 'servic':3A,34B,69C 'still':49B 'use':5A,51B,55B,63C 'use-after-fre':4A 'user':10A 'window':1A,24B,32B,67C","nicknames":[],"mitigations":[],"who_affected":"Affects Windows machines running the MIDI Service Module; the attacker must already have an authorized local account. The sources do not say which Windows builds or configurations are exposed. unknown","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["high","infrastructure","localaccounts","windows"],"campaign_type":null,"search_a":"'-105565':16A,19A '-2026':15A,18A 'cve':14A,17A 'free':7A 'gain':11A 'higher':12A 'let':8A 'local':9A 'midi':2A 'privileg':13A 'servic':3A 'use':5A 'use-after-fre':4A 'user':10A 'window':1A","search_b":"'account':23B,44B 'alreadi':40B 'attack':38B,53B 'bug':29B 'elev':58B 'free':45B 'handl':28B 'infrastructur':20B 'let':36B 'local':22B,43B 'local-account':21B 'machin':62B 'memori':27B,46B 'memory-handl':26B 'midi':33B 'modul':35B 'privileg':59B 'servic':34B 'still':49B 'use':51B,55B 'window':24B,32B","search_c":"'allow':71C 'attack':74C 'author':73C 'elev':76C 'free':65C 'local':78C 'midi':68C 'modul':70C 'privileg':77C 'servic':69C 'use':63C 'window':67C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:17:59+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:L/AC:H/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-2026-105565","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-105565","severity":null,"published_at":"2026-11-10T19:17:59+00:00","modified_at":"2026-11-10T19:17:59+00:00","first_seen_at":"2026-11-10T19:24:20+00:00","fetched_at":"2026-11-10T19:24:20+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"}