{"id":"CVE-2026-118218","kind":"vulnerability","aliases":["CVE-2026-118218"],"related":[],"title":"Windows: use-after-free in graphics platform lets a local user gain admin rights","description":"Use after free in Windows Advanced Rasterization Platform allows an authorized attacker to elevate privileges locally.","summary":"A use-after-free bug in the Windows Advanced Rasterization Platform, the graphics component of Windows, lets an attacker who already has a local account raise their privileges. The sources give a CVSS score of 8.8 and do not describe a public exploit.","severity":"high","cvss":8.8,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["infrastructure","windows"],"not_affected_if":["no-untrusted-local-users"],"how_to_check":"- Check the Windows build with `winver` and compare it against the update Microsoft lists for CVE-2026-118218.\n- Confirm that Windows Update is current on each machine.","fix":null,"status":"open","published_at":"2026-11-10T19:19:38+00:00","first_seen_at":"2026-11-10T19:24:50+00:00","triaged_at":"2026-11-10T19:30:11+00:00","updated_at":"2026-11-10T19:30:11+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-11-10T19:30:11Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Windows: use-after-free in graphics platform lets a local user gain admin rights","impact":"high","summary":"A use-after-free bug in the Windows Advanced Rasterization Platform, the graphics component of Windows, lets an attacker who already has a local account raise their privileges. The sources give a CVSS score of 8.8 and do not describe a public exploit.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["windows"],"confidence":0.6,"fix_status":"unknown","needs_auth":"yes","worst_case":"local user gains SYSTEM-level control of the machine","analyst_note":"Find the Microsoft Security Response Center advisory for CVE-2026-118218 to get the fixed Windows build numbers and the update KB.","how_to_check":"- Check the Windows build with `winver` and compare it against the update Microsoft lists for CVE-2026-118218.\n- Confirm that Windows Update is current on each machine.","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["no-untrusted-local-users"],"who_is_affected":"Any Windows machine where a user can log in locally is in scope, since the attacker must already be authorized on the system. Shared hosts, terminal servers and multi-user workstations carry the most risk. Systems where only trusted administrators log in are less exposed but still need the patch.","user_interaction":"no","product_ecosystem":"","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000708,"input_tokens":4492,"output_tokens":517,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Find the Microsoft Security Response Center advisory for CVE-2026-118218 to get the fixed Windows build numbers and the update KB.","search":"'-118218':18A,21A '-2026':17A,20A '8.8':60B 'account':49B 'admin':14A 'advanc':33B,73C 'allow':76C 'alreadi':45B 'attack':43B,79C 'author':78C 'bug':29B 'compon':38B 'cve':16A,19A 'cvss':57B 'describ':64B 'elev':81C 'exploit':67B 'free':5A,28B,70C 'gain':13A 'give':55B 'graphic':7A,37B 'infrastructur':22B 'let':9A,41B 'local':11A,48B,83C 'platform':8A,35B,75C 'privileg':52B,82C 'public':66B 'rais':50B 'raster':34B,74C 'right':15A 'score':58B 'sourc':54B 'use':3A,26B,68C 'use-after-fre':2A,25B 'user':12A 'window':1A,23B,32B,40B,72C","nicknames":[],"mitigations":[],"who_affected":"Any Windows machine where a user can log in locally is in scope, since the attacker must already be authorized on the system. Shared hosts, terminal servers and multi-user workstations carry the most risk. Systems where only trusted administrators log in are less exposed but still need the patch.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["high","infrastructure","windows"],"campaign_type":null,"search_a":"'-118218':18A,21A '-2026':17A,20A 'admin':14A 'cve':16A,19A 'free':5A 'gain':13A 'graphic':7A 'let':9A 'local':11A 'platform':8A 'right':15A 'use':3A 'use-after-fre':2A 'user':12A 'window':1A","search_b":"'8.8':60B 'account':49B 'advanc':33B 'alreadi':45B 'attack':43B 'bug':29B 'compon':38B 'cvss':57B 'describ':64B 'exploit':67B 'free':28B 'give':55B 'graphic':37B 'infrastructur':22B 'let':41B 'local':48B 'platform':35B 'privileg':52B 'public':66B 'rais':50B 'raster':34B 'score':58B 'sourc':54B 'use':26B 'use-after-fre':25B 'window':23B,32B,40B","search_c":"'advanc':73C 'allow':76C 'attack':79C 'author':78C 'elev':81C 'free':70C 'local':83C 'platform':75C 'privileg':82C 'raster':74C 'use':68C 'window':72C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:19:38+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","cvss_by":"secure@microsoft.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-118218","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-118218","severity":null,"published_at":"2026-11-10T19:19:38+00:00","modified_at":"2026-11-10T19:19:39+00:00","first_seen_at":"2026-11-10T19:24:50+00:00","fetched_at":"2026-11-10T19:24:50+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"}