{"id":"CVE-2026-105524","kind":"vulnerability","aliases":["CVE-2026-105524"],"related":[],"title":"Windows Management Instrumentation: weak authentication lets a local user gain higher privileges","description":"Weak authentication in Windows Management Instrumentation allows an authorized attacker to elevate privileges locally.","summary":"Windows Management Instrumentation has weak authentication that lets an already-authorized local attacker elevate their privileges. The attacker gets the rights of a more powerful account on the same machine.","severity":"high","cvss":7.8,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["enterprise-endpoints","infrastructure","windows","wmi"],"not_affected_if":["no-local-untrusted-users"],"how_to_check":"- Confirm the Windows build with `winver` and compare it against Microsoft's security update guide entry for CVE-2026-105524\n- Check Windows Update history for the monthly cumulative update that lists this CVE","fix":null,"status":"open","published_at":"2026-11-10T19:17:51+00:00","first_seen_at":"2026-11-10T19:24:17+00:00","triaged_at":"2026-11-10T19:42:37+00:00","updated_at":"2026-11-10T19:42:37+00:00","category":"infrastructure","confidence":0.5,"triage":{"at":"2026-11-10T19:42:37Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Windows Management Instrumentation: weak authentication lets a local user gain higher privileges","impact":"high","summary":"Windows Management Instrumentation has weak authentication that lets an already-authorized local attacker elevate their privileges. The attacker gets the rights of a more powerful account on the same machine.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["windows","wmi","enterprise-endpoints"],"confidence":0.5,"fix_status":"unknown","needs_auth":"yes","worst_case":"local user gains administrator or SYSTEM privileges on the machine","analyst_note":"Get the affected Windows builds and the patch KB from the Microsoft Security Update Guide entry for CVE-2026-105524 (NVD link in sources does not give them).","how_to_check":"- Confirm the Windows build with `winver` and compare it against Microsoft's security update guide entry for CVE-2026-105524\n- Check Windows Update history for the monthly cumulative update that lists this CVE","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["no-local-untrusted-users"],"who_is_affected":"Affects Windows machines where a user already has some local access, such as a shared server or a workstation with multiple accounts. Internet-only attackers without a local foothold are not described as affected. The sources do not list the exact Windows versions.","user_interaction":"no","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000711,"input_tokens":4488,"output_tokens":525,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Get the affected Windows builds and the patch KB from the Microsoft Security Update Guide entry for CVE-2026-105524 (NVD link in sources does not give them).","search":"'-105524':15A,18A '-2026':14A,17A 'account':51B 'allow':62C 'alreadi':35B 'already-author':34B 'attack':38B,43B,65C 'authent':5A,30B,57C 'author':36B,64C 'cve':13A,16A 'elev':39B,67C 'endpoint':21B 'enterpris':20B 'enterprise-endpoint':19B 'gain':10A 'get':44B 'higher':11A 'infrastructur':22B 'instrument':3A,27B,61C 'let':6A,32B 'local':8A,37B,69C 'machin':55B 'manag':2A,26B,60C 'power':50B 'privileg':12A,41B,68C 'right':46B 'user':9A 'weak':4A,29B,56C 'window':1A,23B,25B,59C 'wmi':24B","nicknames":[],"mitigations":[],"who_affected":"Affects Windows machines where a user already has some local access, such as a shared server or a workstation with multiple accounts. Internet-only attackers without a local foothold are not described as affected. The sources do not list the exact Windows versions.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["enterpriseendpoints","high","infrastructure","windows","wmi"],"campaign_type":null,"search_a":"'-105524':15A,18A '-2026':14A,17A 'authent':5A 'cve':13A,16A 'gain':10A 'higher':11A 'instrument':3A 'let':6A 'local':8A 'manag':2A 'privileg':12A 'user':9A 'weak':4A 'window':1A","search_b":"'account':51B 'alreadi':35B 'already-author':34B 'attack':38B,43B 'authent':30B 'author':36B 'elev':39B 'endpoint':21B 'enterpris':20B 'enterprise-endpoint':19B 'get':44B 'infrastructur':22B 'instrument':27B 'let':32B 'local':37B 'machin':55B 'manag':26B 'power':50B 'privileg':41B 'right':46B 'weak':29B 'window':23B,25B 'wmi':24B","search_c":"'allow':62C 'attack':65C 'authent':57C 'author':64C 'elev':67C 'instrument':61C 'local':69C 'manag':60C 'privileg':68C 'weak':56C 'window':59C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:17:51+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-2026-105524","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-105524","severity":null,"published_at":"2026-11-10T19:17:51+00:00","modified_at":"2026-11-10T19:17:51+00:00","first_seen_at":"2026-11-10T19:24:17+00:00","fetched_at":"2026-11-10T19:24:17+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"}