{"id":"CVE-2026-95953","kind":"vulnerability","aliases":["CVE-2026-95953"],"related":[],"title":"Windows Graphics Kernel: out-of-bounds read lets a local user gain higher privileges","description":"Out-of-bounds read in Windows Graphics Kernel allows an authorized attacker to elevate privileges locally.","summary":"A flaw in the Windows Graphics Kernel reads memory past the end of a buffer. A signed-in local user with some access can use it to elevate privileges on the machine.","severity":"high","cvss":7.8,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["infrastructure","windows","windows-graphics-kernel"],"not_affected_if":["no-untrusted-local-users"],"how_to_check":"Open the MSRC Update Guide entry for CVE-2026-95953, find the KB for your Windows version, then check it is installed (Settings > Windows Update > Update history, or PowerShell Get-HotFix -Id KBxxxxxxx). Builds and KB numbers are not confirmed yet.","fix":null,"status":"open","published_at":"2026-11-10T19:21:49+00:00","first_seen_at":"2026-11-10T19:25:24+00:00","triaged_at":"2026-11-10T19:38:08+00:00","updated_at":"2026-11-10T20:20:47+00:00","category":"infrastructure","confidence":0.4,"triage":{"at":"2026-11-10T19:38:08Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Windows Graphics Kernel: out-of-bounds read lets a local user gain higher privileges","impact":"high","summary":"A flaw in the Windows Graphics Kernel reads memory past the end of a buffer. A signed-in local user with some access can use it to elevate privileges on the machine.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["windows","windows-graphics-kernel"],"confidence":0.5,"fix_status":"unknown","needs_auth":"yes","worst_case":"local user gains SYSTEM privileges on the machine","analyst_note":"Confirm affected Windows builds and the fixed update from the Microsoft Security Response Center entry for CVE-2026-95953 (NVD link in sources).","how_to_check":"- Check the installed Windows build with `winver` and compare it against Microsoft's security update guide for CVE-2026-95953\n- Confirm Windows Update has applied the latest cumulative update","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["no-untrusted-local-users"],"who_is_affected":"Any Windows machine where a user with local access, such as a standard account or a process running as one, could attempt the exploit. Servers and workstations with untrusted local users are the main concern. The sources do not name the exact affected builds.","user_interaction":"no","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000701,"input_tokens":4494,"output_tokens":503,"severity_before":"high"},"analyst_status":"done","analyst_note":"Confirm affected Windows builds and the fixed update from the Microsoft Security Response Center entry for CVE-2026-95953 (NVD link in sources).","search":"'-2026':17A,20A '-95953':18A,21A 'access':51B 'allow':70C 'attack':73C 'author':72C 'bound':7A,64C 'buffer':42B 'cve':16A,19A 'elev':56B,75C 'end':39B 'flaw':29B 'gain':13A 'graphic':2A,26B,33B,68C 'higher':14A 'infrastructur':22B 'kernel':3A,27B,34B,69C 'let':9A 'local':11A,47B,77C 'machin':60B 'memori':36B 'out-of-bound':4A,61C 'past':37B 'privileg':15A,57B,76C 'read':8A,35B,65C 'sign':45B 'signed-in':44B 'use':53B 'user':12A,48B 'window':1A,23B,25B,32B,67C 'windows-graphics-kernel':24B","nicknames":[],"mitigations":[],"who_affected":"Any Windows machine where a user with local access, such as a standard account or a process running as one, could attempt the exploit. Servers and workstations with untrusted local users are the main concern. The sources do not name the exact affected builds.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"unknown","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["high","infrastructure","windows","windowsgraphicskernel"],"campaign_type":null,"search_a":"'-2026':17A,20A '-95953':18A,21A 'bound':7A 'cve':16A,19A 'gain':13A 'graphic':2A 'higher':14A 'kernel':3A 'let':9A 'local':11A 'out-of-bound':4A 'privileg':15A 'read':8A 'user':12A 'window':1A","search_b":"'access':51B 'buffer':42B 'elev':56B 'end':39B 'flaw':29B 'graphic':26B,33B 'infrastructur':22B 'kernel':27B,34B 'local':47B 'machin':60B 'memori':36B 'past':37B 'privileg':57B 'read':35B 'sign':45B 'signed-in':44B 'use':53B 'user':48B 'window':23B,25B,32B 'windows-graphics-kernel':24B","search_c":"'allow':70C 'attack':73C 'author':72C 'bound':64C 'elev':75C 'graphic':68C 'kernel':69C 'local':77C 'out-of-bound':61C 'privileg':76C 'read':65C 'window':67C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:21:49+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-2026-95953","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-95953","severity":null,"published_at":"2026-11-10T19:21:49+00:00","modified_at":"2026-11-10T19:21:49+00:00","first_seen_at":"2026-11-10T19:25:24+00:00","fetched_at":"2026-11-10T19:25:24+00:00","note":null},{"source":"analyst","external_id":"CVE-2026-95953:2643","url":null,"severity":null,"published_at":"2026-11-10T20:20:47+00:00","modified_at":"2026-11-10T20:20:47+00:00","first_seen_at":"2026-11-10T20:20:47+00:00","fetched_at":"2026-11-10T20:20:47+00:00","note":"MSRC and NVD pages returned no content via web-cli; no primary page read. Only a third-party list (NextGuard) confirms Nov 9 2026 release as Windows Graphics Kernel EoP, CVSS 7.8. Affected builds and KB unknown; settle by reading the MSRC update guide entry. Nothing verified."}],"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"}