{"id":"CVE-2026-105028","kind":"vulnerability","aliases":["CVE-2026-105028"],"related":[],"title":"Windows Win32K: out-of-bounds read lets a local user gain higher privileges","description":"Out-of-bounds read in Windows Win32K allows an authorized attacker to elevate privileges locally.","summary":"Microsoft Windows' Win32K kernel driver reads memory past the end of a buffer. An attacker who already has a local account can use this to elevate their privileges.","severity":"high","cvss":7.8,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["infrastructure","win32k","windows"],"not_affected_if":["no-local-user-access"],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:17:44+00:00","first_seen_at":"2026-11-10T19:24:14+00:00","triaged_at":"2026-11-10T19:42:42+00:00","updated_at":"2026-11-10T19:42:42+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-11-10T19:42:42Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Windows Win32K: out-of-bounds read lets a local user gain higher privileges","impact":"high","summary":"Microsoft Windows' Win32K kernel driver reads memory past the end of a buffer. An attacker who already has a local account can use this to elevate their privileges.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["windows","win32k"],"confidence":0.6,"fix_status":"unknown","needs_auth":"yes","worst_case":"local user gains SYSTEM-level control of the machine","analyst_note":"Find the affected Windows builds and the Microsoft security update that fixes CVE-2026-105028 in Microsoft's security update guide.","how_to_check":"unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["no-local-user-access"],"who_is_affected":"Windows machines where a local user account exists that could be used by an attacker. The sources do not list affected Windows builds or whether a patch is out. unknown","user_interaction":"unknown","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000648,"input_tokens":4486,"output_tokens":398,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Find the affected Windows builds and the Microsoft security update that fixes CVE-2026-105028 in Microsoft's security update guide.","search":"'-105028':17A,20A '-2026':16A,19A 'account':44B 'allow':60C 'alreadi':40B 'attack':38B,63C 'author':62C 'bound':6A,55C 'buffer':36B 'cve':15A,18A 'driver':28B 'elev':49B,65C 'end':33B 'gain':12A 'higher':13A 'infrastructur':21B 'kernel':27B 'let':8A 'local':10A,43B,67C 'memori':30B 'microsoft':24B 'out-of-bound':3A,52C 'past':31B 'privileg':14A,51B,66C 'read':7A,29B,56C 'use':46B 'user':11A 'win32k':2A,22B,26B,59C 'window':1A,23B,25B,58C","nicknames":[],"mitigations":[],"who_affected":"Windows machines where a local user account exists that could be used by an attacker. The sources do not list affected Windows builds or whether a patch is out. unknown","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["high","infrastructure","win32k","windows"],"campaign_type":null,"search_a":"'-105028':17A,20A '-2026':16A,19A 'bound':6A 'cve':15A,18A 'gain':12A 'higher':13A 'let':8A 'local':10A 'out-of-bound':3A 'privileg':14A 'read':7A 'user':11A 'win32k':2A 'window':1A","search_b":"'account':44B 'alreadi':40B 'attack':38B 'buffer':36B 'driver':28B 'elev':49B 'end':33B 'infrastructur':21B 'kernel':27B 'local':43B 'memori':30B 'microsoft':24B 'past':31B 'privileg':51B 'read':29B 'use':46B 'win32k':22B,26B 'window':23B,25B","search_c":"'allow':60C 'attack':63C 'author':62C 'bound':55C 'elev':65C 'local':67C 'out-of-bound':52C 'privileg':66C 'read':56C 'win32k':59C 'window':58C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:17:44+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-2026-105028","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-105028","severity":null,"published_at":"2026-11-10T19:17:44+00:00","modified_at":"2026-11-10T19:17:46+00:00","first_seen_at":"2026-11-10T19:24:14+00:00","fetched_at":"2026-11-10T19:24:14+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"}