{"id":"CVE-2026-88217","kind":"vulnerability","aliases":["CVE-2026-88217"],"related":[],"title":"Windows Graphics Kernel: uninitialized memory lets a local user read data","description":"Use of uninitialized resource in Windows Graphics Kernel allows an authorized attacker to disclose information locally.","summary":"The Windows Graphics Kernel reads a resource that was never initialized, so an authorized local user can see memory contents they should not. The sources give no further detail on what data is exposed.","severity":"medium","cvss":5.5,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["infrastructure","windows"],"not_affected_if":["no-local-logins"],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:21:28+00:00","first_seen_at":"2026-11-10T19:25:19+00:00","triaged_at":"2026-11-10T20:00:33+00:00","updated_at":"2026-11-10T20:00:33+00:00","category":"infrastructure","confidence":0.5,"triage":{"at":"2026-11-10T20:00:33Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Windows Graphics Kernel: uninitialized memory lets a local user read data","impact":"low","summary":"The Windows Graphics Kernel reads a resource that was never initialized, so an authorized local user can see memory contents they should not. The sources give no further detail on what data is exposed.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["windows"],"confidence":0.5,"fix_status":"unknown","needs_auth":"yes","worst_case":"local user reads uninitialized kernel memory, possibly sensitive data","analyst_note":"Check the Microsoft security update guide entry for CVE-2026-88217 for affected Windows builds, the fixed update, and whether the disclosed data is sensitive.","how_to_check":"- unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["no-local-logins"],"who_is_affected":"Windows machines where a user already has a local login can be affected. Remote attackers without an account on the machine are not described as able to trigger it. The sources do not list affected Windows builds.","user_interaction":"unknown","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.00066,"input_tokens":4493,"output_tokens":422,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-2026':13A,16A '-88217':14A,17A 'allow':62C 'attack':65C 'author':33B,64C 'content':39B 'cve':12A,15A 'data':11A,51B 'detail':48B 'disclos':67C 'expos':53B 'give':45B 'graphic':2A,22B,60C 'inform':68C 'infrastructur':18B 'initi':30B 'kernel':3A,23B,61C 'let':6A 'local':8A,34B,69C 'memori':5A,38B 'never':29B 'read':10A,24B 'resourc':26B,57C 'see':37B 'sourc':44B 'uniniti':4A,56C 'use':54C 'user':9A,35B 'window':1A,19B,21B,59C","nicknames":[],"mitigations":[],"who_affected":"Windows machines where a user already has a local login can be affected. Remote attackers without an account on the machine are not described as able to trigger it. The sources do not list affected Windows builds.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["infrastructure","medium","windows"],"campaign_type":null,"search_a":"'-2026':13A,16A '-88217':14A,17A 'cve':12A,15A 'data':11A 'graphic':2A 'kernel':3A 'let':6A 'local':8A 'memori':5A 'read':10A 'uniniti':4A 'user':9A 'window':1A","search_b":"'author':33B 'content':39B 'data':51B 'detail':48B 'expos':53B 'give':45B 'graphic':22B 'infrastructur':18B 'initi':30B 'kernel':23B 'local':34B 'memori':38B 'never':29B 'read':24B 'resourc':26B 'see':37B 'sourc':44B 'user':35B 'window':19B,21B","search_c":"'allow':62C 'attack':65C 'author':64C 'disclos':67C 'graphic':60C 'inform':68C 'kernel':61C 'local':69C 'resourc':57C 'uniniti':56C 'use':54C 'window':59C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:21:28+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","cvss_by":"secure@microsoft.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-88217","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-88217","severity":null,"published_at":"2026-11-10T19:21:28+00:00","modified_at":"2026-11-10T19:21:28+00:00","first_seen_at":"2026-11-10T19:25:19+00:00","fetched_at":"2026-11-10T19:25:19+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"}