{"id":"CVE-2026-88229","kind":"vulnerability","aliases":["CVE-2026-88229"],"related":[],"title":"Windows Media Player: heap overflow lets a network attacker run code","description":"Heap-based buffer overflow in Windows Media Player allows an unauthorized attacker to execute code over a network.","summary":"A heap-based buffer overflow in Windows Media Player lets an unauthorized attacker run code over a network. The sources give no further detail on the trigger or the affected versions.","severity":"high","cvss":8.8,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"Windows Media Player","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["other","windows","windows-media-player"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:21:31+00:00","first_seen_at":"2026-11-10T19:25:19+00:00","triaged_at":"2026-11-10T19:25:59+00:00","updated_at":"2026-11-10T19:25:59+00:00","category":"other","confidence":0.4,"triage":{"at":"2026-11-10T19:25:59Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"Windows Media Player: heap overflow lets a network attacker run code","impact":"high","summary":"A heap-based buffer overflow in Windows Media Player lets an unauthorized attacker run code over a network. The sources give no further detail on the trigger or the affected versions.","audience":"everyone","category":"other","nicknames":[],"who_cares":["windows","windows-media-player"],"confidence":0.4,"fix_status":"unknown","needs_auth":"unknown","worst_case":"Attacker runs code on the affected Windows machine over the network","analyst_note":"Check the Microsoft Security Update Guide entry for CVE-2026-88229 for affected Windows versions, fixed builds and whether user interaction is needed.","how_to_check":"- unknown","plain_action":"","product_name":"Windows Media Player","needs_analyst":true,"not_affected_if":[],"who_is_affected":"unknown","user_interaction":"unknown","product_ecosystem":"vendor","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000639,"input_tokens":4490,"output_tokens":380,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Check the Microsoft Security Update Guide entry for CVE-2026-88229 for affected Windows versions, fixed builds and whether user interaction is needed.","search":"'-2026':13A,16A '-88229':14A,17A 'affect':57B 'allow':68C 'attack':9A,40B,71C 'base':30B,61C 'buffer':31B,62C 'code':11A,42B,74C 'cve':12A,15A 'detail':51B 'execut':73C 'give':48B 'heap':4A,29B,60C 'heap-bas':28B,59C 'let':6A,37B 'media':2A,19A,25B,35B,66C 'network':8A,45B,77C 'overflow':5A,32B,63C 'player':3A,20A,26B,36B,67C 'run':10A,41B 'sourc':47B 'trigger':54B 'unauthor':39B,70C 'version':58B 'window':1A,22B,24B,34B,65C 'windows':18A 'windows-media-play':23B","nicknames":[],"mitigations":[],"who_affected":null,"tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"everyone","plain_action":null,"pkeys":["mediaplayer","windowsmediaplayer"],"ptokens":["media","player","windows"],"labels":["high","other","vendor","windows","windowsmediaplayer"],"campaign_type":null,"search_a":"'-2026':13A,16A '-88229':14A,17A 'attack':9A 'code':11A 'cve':12A,15A 'heap':4A 'let':6A 'media':2A,19A 'network':8A 'overflow':5A 'player':3A,20A 'run':10A 'window':1A 'windows':18A","search_b":"'affect':57B 'attack':40B 'base':30B 'buffer':31B 'code':42B 'detail':51B 'give':48B 'heap':29B 'heap-bas':28B 'let':37B 'media':25B,35B 'network':45B 'overflow':32B 'player':26B,36B 'run':41B 'sourc':47B 'trigger':54B 'unauthor':39B 'version':58B 'window':22B,24B,34B 'windows-media-play':23B","search_c":"'allow':68C 'attack':71C 'base':61C 'buffer':62C 'code':74C 'execut':73C 'heap':60C 'heap-bas':59C 'media':66C 'network':77C 'overflow':63C 'player':67C 'unauthor':70C 'window':65C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:21:31+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/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-2026-88229","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-88229","severity":null,"published_at":"2026-11-10T19:21:31+00:00","modified_at":"2026-11-10T19:21:31+00:00","first_seen_at":"2026-11-10T19:25:19+00:00","fetched_at":"2026-11-10T19:25:19+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"}