{"id":"CVE-2026-116700","kind":"vulnerability","aliases":["CVE-2026-116700"],"related":[],"title":"Windows Telephony Service: heap overflow lets a local user gain higher privileges","description":"Heap-based buffer overflow in Windows Telephony Service allows an authorized attacker to elevate privileges with a physical attack.","summary":"A heap-based buffer overflow in the Windows Telephony Service lets an authorized attacker raise their privileges. The NVD description says it needs a physical attack.","severity":"medium","cvss":6.6,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"Windows Telephony Service","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["other","windows"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:19:11+00:00","first_seen_at":"2026-11-10T19:24:45+00:00","triaged_at":"2026-11-10T19:56:00+00:00","updated_at":"2026-11-10T19:56:00+00:00","category":"other","confidence":0.5,"triage":{"at":"2026-11-10T19:56:00Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Windows Telephony Service: heap overflow lets a local user gain higher privileges","impact":"high","summary":"A heap-based buffer overflow in the Windows Telephony Service lets an authorized attacker raise their privileges. The NVD description says it needs a physical attack.","audience":"businesses","category":"other","nicknames":[],"who_cares":["windows"],"confidence":0.5,"fix_status":"unknown","needs_auth":"yes","worst_case":"attacker gains elevated privileges on the Windows machine","analyst_note":"Check the Microsoft Security Response Center entry for CVE-2026-116700 for affected versions and the patch.","how_to_check":"unknown","plain_action":"","product_name":"Windows Telephony Service","needs_analyst":true,"not_affected_if":[],"who_is_affected":"The sources describe a Windows Telephony Service flaw that needs an authorized account and physical access. The sources do not name affected Windows versions or say which configurations are exposed. unknown","user_interaction":"unknown","product_ecosystem":"vendor","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000657,"input_tokens":4500,"output_tokens":414,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-116700':15A,18A '-2026':14A,17A 'allow':60C 'attack':38B,50B,63C,70C 'author':37B,62C 'base':27B,53C 'buffer':28B,54C 'cve':13A,16A 'descript':44B 'elev':65C 'gain':10A 'heap':4A,26B,52C 'heap-bas':25B,51C 'higher':11A 'let':6A,35B 'local':8A 'need':47B 'nvd':43B 'overflow':5A,29B,55C 'physic':49B,69C 'privileg':12A,41B,66C 'rais':39B 'say':45B 'servic':3A,34B,59C 'service':21A 'telephoni':2A,33B,58C 'telephony':20A 'user':9A 'window':1A,23B,32B,57C 'windows':19A","nicknames":[],"mitigations":[],"who_affected":"The sources describe a Windows Telephony Service flaw that needs an authorized account and physical access. The sources do not name affected Windows versions or say which configurations are exposed. unknown","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":["telephonyservice","windowstelephonyservice"],"ptokens":["service","telephony","windows"],"labels":["medium","other","vendor","windows"],"campaign_type":null,"search_a":"'-116700':15A,18A '-2026':14A,17A 'cve':13A,16A 'gain':10A 'heap':4A 'higher':11A 'let':6A 'local':8A 'overflow':5A 'privileg':12A 'servic':3A 'service':21A 'telephoni':2A 'telephony':20A 'user':9A 'window':1A 'windows':19A","search_b":"'attack':38B,50B 'author':37B 'base':27B 'buffer':28B 'descript':44B 'heap':26B 'heap-bas':25B 'let':35B 'need':47B 'nvd':43B 'overflow':29B 'physic':49B 'privileg':41B 'rais':39B 'say':45B 'servic':34B 'telephoni':33B 'window':23B,32B","search_c":"'allow':60C 'attack':63C,70C 'author':62C 'base':53C 'buffer':54C 'elev':65C 'heap':52C 'heap-bas':51C 'overflow':55C 'physic':69C 'privileg':66C 'servic':59C 'telephoni':58C 'window':57C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:19:11+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:P/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-2026-116700","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116700","severity":null,"published_at":"2026-11-10T19:19:11+00:00","modified_at":"2026-11-10T19:19:11+00:00","first_seen_at":"2026-11-10T19:24:45+00:00","fetched_at":"2026-11-10T19:24:45+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"}