{"id":"CVE-2026-108409","kind":"vulnerability","aliases":["CVE-2026-108409"],"related":[],"title":"Windows Overlay Filter leaks sensitive system information to local users","description":"Exposure of sensitive system information to an unauthorized control sphere in Windows Overlay Filter allows an authorized attacker to disclose information locally.","summary":"A flaw in the Windows Overlay Filter exposes sensitive system information to a control sphere that should not see it. An authorized local attacker can read that information.","severity":"medium","cvss":5.5,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"Windows Overlay Filter","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["infrastructure","windows"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:18:10+00:00","first_seen_at":"2026-11-10T19:24:22+00:00","triaged_at":"2026-11-10T20:02:14+00:00","updated_at":"2026-11-10T20:02:14+00:00","category":"infrastructure","confidence":0.5,"triage":{"at":"2026-11-10T20:02:14Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Windows Overlay Filter leaks sensitive system information to local users","impact":"low","summary":"A flaw in the Windows Overlay Filter exposes sensitive system information to a control sphere that should not see it. An authorized local attacker can read that information.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["windows"],"confidence":0.5,"fix_status":"unknown","needs_auth":"yes","worst_case":"local attacker reads sensitive system information","analyst_note":"","how_to_check":"unknown","plain_action":"","product_name":"Windows Overlay Filter","needs_analyst":false,"not_affected_if":[],"who_is_affected":"Windows machines running the Overlay Filter component; the sources do not name affected builds or configurations. Exposure requires an attacker with a local account on the machine, so systems without untrusted local users carry less risk.","user_interaction":"unknown","product_ecosystem":"vendor","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000638,"input_tokens":4503,"output_tokens":376,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-108409':13A,16A '-2026':12A,15A 'allow':64C 'attack':45B,67C 'author':43B,66C 'control':35B,58C 'cve':11A,14A 'disclos':69C 'expos':29B 'exposur':50C 'filter':3A,19A,28B,63C 'flaw':23B 'inform':7A,32B,49B,54C,70C 'infrastructur':20B 'leak':4A 'local':9A,44B,71C 'overlay':2A,18A,27B,62C 'read':47B 'see':40B 'sensit':5A,30B,52C 'sphere':36B,59C 'system':6A,31B,53C 'unauthor':57C 'user':10A 'window':1A,21B,26B,61C 'windows':17A","nicknames":[],"mitigations":[],"who_affected":"Windows machines running the Overlay Filter component; the sources do not name affected builds or configurations. Exposure requires an attacker with a local account on the machine, so systems without untrusted local users carry less risk.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":["overlayfilter","windowsoverlayfilter"],"ptokens":["filter","overlay","windows"],"labels":["infrastructure","medium","vendor","windows"],"campaign_type":null,"search_a":"'-108409':13A,16A '-2026':12A,15A 'cve':11A,14A 'filter':3A,19A 'inform':7A 'leak':4A 'local':9A 'overlay':2A,18A 'sensit':5A 'system':6A 'user':10A 'window':1A 'windows':17A","search_b":"'attack':45B 'author':43B 'control':35B 'expos':29B 'filter':28B 'flaw':23B 'inform':32B,49B 'infrastructur':20B 'local':44B 'overlay':27B 'read':47B 'see':40B 'sensit':30B 'sphere':36B 'system':31B 'window':21B,26B","search_c":"'allow':64C 'attack':67C 'author':66C 'control':58C 'disclos':69C 'exposur':50C 'filter':63C 'inform':54C,70C 'local':71C 'overlay':62C 'sensit':52C 'sphere':59C 'system':53C 'unauthor':57C 'window':61C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:18:10+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-2026-108409","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-108409","severity":null,"published_at":"2026-11-10T19:18:10+00:00","modified_at":"2026-11-10T19:18:10+00:00","first_seen_at":"2026-11-10T19:24:22+00:00","fetched_at":"2026-11-10T19:24:22+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"}