{"id":"CVE-2026-95888","kind":"vulnerability","aliases":["CVE-2026-95888"],"related":[],"title":"Windows Graphics Kernel: heap overflow lets a local user gain higher privileges","description":"Heap-based buffer overflow in Windows Graphics Kernel allows an authorized attacker to elevate privileges locally.","summary":"A heap-based buffer overflow in the Windows Graphics Kernel lets an attacker who already has a local account escalate privileges. The sources give no further detail on exploitation conditions.","severity":"high","cvss":7.0,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["graphics-kernel","infrastructure","windows"],"not_affected_if":["no-local-untrusted-users"],"how_to_check":"- Check the Windows build with `winver` and compare it against the fixed build listed in Microsoft's security update guide for CVE-2026-95888","fix":null,"status":"open","published_at":"2026-11-10T19:21:42+00:00","first_seen_at":"2026-11-10T19:25:22+00:00","triaged_at":"2026-11-10T19:49:53+00:00","updated_at":"2026-11-10T19:49:53+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-11-10T19:49:53Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Windows Graphics Kernel: heap overflow lets a local user gain higher privileges","impact":"high","summary":"A heap-based buffer overflow in the Windows Graphics Kernel lets an attacker who already has a local account escalate privileges. The sources give no further detail on exploitation conditions.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["windows","graphics-kernel"],"confidence":0.6,"fix_status":"unknown","needs_auth":"yes","worst_case":"local user gains SYSTEM-level privileges on the machine","analyst_note":"Confirm affected Windows builds and the Microsoft fixed build from the Security Update Guide entry for CVE-2026-95888.","how_to_check":"- Check the Windows build with `winver` and compare it against the fixed build listed in Microsoft's security update guide for CVE-2026-95888\n- unknown otherwise","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["no-local-untrusted-users"],"who_is_affected":"Any Windows machine with the Graphics Kernel component that has a local user account an attacker could use. The sources do not state which Windows builds are affected or the fixed builds. unknown","user_interaction":"no","product_ecosystem":"","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000686,"input_tokens":4498,"output_tokens":473,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Confirm affected Windows builds and the Microsoft fixed build from the Security Update Guide entry for CVE-2026-95888.","search":"'-2026':14A,17A '-95888':15A,18A 'account':43B 'allow':64C 'alreadi':39B 'attack':37B,67C 'author':66C 'base':27B,57C 'buffer':28B,58C 'condit':54B 'cve':13A,16A 'detail':51B 'elev':69C 'escal':44B 'exploit':53B 'gain':10A 'give':48B 'graphic':2A,20B,33B,62C 'graphics-kernel':19B 'heap':4A,26B,56C 'heap-bas':25B,55C 'higher':11A 'infrastructur':22B 'kernel':3A,21B,34B,63C 'let':6A,35B 'local':8A,42B,71C 'overflow':5A,29B,59C 'privileg':12A,45B,70C 'sourc':47B 'user':9A 'window':1A,23B,32B,61C","nicknames":[],"mitigations":[],"who_affected":"Any Windows machine with the Graphics Kernel component that has a local user account an attacker could use. The sources do not state which Windows builds are affected or the fixed builds. unknown","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["graphicskernel","high","infrastructure","windows"],"campaign_type":null,"search_a":"'-2026':14A,17A '-95888':15A,18A 'cve':13A,16A 'gain':10A 'graphic':2A 'heap':4A 'higher':11A 'kernel':3A 'let':6A 'local':8A 'overflow':5A 'privileg':12A 'user':9A 'window':1A","search_b":"'account':43B 'alreadi':39B 'attack':37B 'base':27B 'buffer':28B 'condit':54B 'detail':51B 'escal':44B 'exploit':53B 'give':48B 'graphic':20B,33B 'graphics-kernel':19B 'heap':26B 'heap-bas':25B 'infrastructur':22B 'kernel':21B,34B 'let':35B 'local':42B 'overflow':29B 'privileg':45B 'sourc':47B 'window':23B,32B","search_c":"'allow':64C 'attack':67C 'author':66C 'base':57C 'buffer':58C 'elev':69C 'graphic':62C 'heap':56C 'heap-bas':55C 'kernel':63C 'local':71C 'overflow':59C 'privileg':70C 'window':61C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:21:42+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-2026-95888","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-95888","severity":null,"published_at":"2026-11-10T19:21:42+00:00","modified_at":"2026-11-10T19:21:42+00:00","first_seen_at":"2026-11-10T19:25:22+00:00","fetched_at":"2026-11-10T19:25:22+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"}