{"id":"CVE-2026-114165","kind":"vulnerability","aliases":["CVE-2026-114165"],"related":[],"title":"Windows Codecs Library: heap overflow lets a local attacker run code","description":"Heap-based buffer overflow in Microsoft Windows Codecs Library allows an unauthorized attacker to execute code locally.","summary":"A heap-based buffer overflow in the Microsoft Windows Codecs Library lets an unauthorized local attacker run code. The sources give no details on which file types or inputs trigger it.","severity":"high","cvss":7.8,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["infrastructure","windows"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:19:10+00:00","first_seen_at":"2026-11-10T19:24:44+00:00","triaged_at":"2026-11-10T19:40:50+00:00","updated_at":"2026-11-10T19:40:50+00:00","category":"infrastructure","confidence":0.5,"triage":{"at":"2026-11-10T19:40:50Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Windows Codecs Library: heap overflow lets a local attacker run code","impact":"high","summary":"A heap-based buffer overflow in the Microsoft Windows Codecs Library lets an unauthorized local attacker run code. The sources give no details on which file types or inputs trigger it.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["windows"],"confidence":0.5,"fix_status":"unknown","needs_auth":"unknown","worst_case":"Attacker runs code locally on the Windows machine","analyst_note":"Find Microsoft's security update guide entry for CVE-2026-114165 to confirm affected Windows builds, fixed versions and whether user interaction is needed.","how_to_check":"- unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":[],"who_is_affected":"unknown","user_interaction":"unknown","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000628,"input_tokens":4502,"output_tokens":355,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Find Microsoft's security update guide entry for CVE-2026-114165 to confirm affected Windows builds, fixed versions and whether user interaction is needed.","search":"'-114165':14A,17A '-2026':13A,16A 'allow':61C 'attack':9A,36B,64C 'base':23B,53C 'buffer':24B,54C 'code':11A,38B,67C 'codec':2A,30B,59C 'cve':12A,15A 'detail':43B 'execut':66C 'file':46B 'give':41B 'heap':4A,22B,52C 'heap-bas':21B,51C 'infrastructur':18B 'input':49B 'let':6A,32B 'librari':3A,31B,60C 'local':8A,35B,68C 'microsoft':28B,57C 'overflow':5A,25B,55C 'run':10A,37B 'sourc':40B 'trigger':50B 'type':47B 'unauthor':34B,63C 'window':1A,19B,29B,58C","nicknames":[],"mitigations":[],"who_affected":null,"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":"'-114165':14A,17A '-2026':13A,16A 'attack':9A 'code':11A 'codec':2A 'cve':12A,15A 'heap':4A 'let':6A 'librari':3A 'local':8A 'overflow':5A 'run':10A 'window':1A","search_b":"'attack':36B 'base':23B 'buffer':24B 'code':38B 'codec':30B 'detail':43B 'file':46B 'give':41B 'heap':22B 'heap-bas':21B 'infrastructur':18B 'input':49B 'let':32B 'librari':31B 'local':35B 'microsoft':28B 'overflow':25B 'run':37B 'sourc':40B 'trigger':50B 'type':47B 'unauthor':34B 'window':19B,29B","search_c":"'allow':61C 'attack':64C 'base':53C 'buffer':54C 'code':67C 'codec':59C 'execut':66C 'heap':52C 'heap-bas':51C 'librari':60C 'local':68C 'microsoft':57C 'overflow':55C 'unauthor':63C 'window':58C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:19:10+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cvss_by":"secure@microsoft.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-114165","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-114165","severity":null,"published_at":"2026-11-10T19:19:10+00:00","modified_at":"2026-11-10T19:19:10+00:00","first_seen_at":"2026-11-10T19:24:44+00:00","fetched_at":"2026-11-10T19:24:44+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"}