{"id":"CVE-2026-112717","kind":"vulnerability","aliases":["CVE-2026-112717"],"related":[],"title":"Microsoft Word: heap buffer overflow lets a remote attacker run code","description":"Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.","summary":"A heap-based buffer overflow in Microsoft Office Word lets an attacker send a crafted input over a network to write past allocated memory. The sources say this allows an unauthorized attacker to execute code.","severity":"high","cvss":8.8,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["microsoft-office","other","windows","word"],"not_affected_if":["unknown"],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:18:29+00:00","first_seen_at":"2026-11-10T19:24:30+00:00","triaged_at":"2026-11-10T19:32:06+00:00","updated_at":"2026-11-10T19:32:06+00:00","category":"other","confidence":0.5,"triage":{"at":"2026-11-10T19:32:06Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"Microsoft Word: heap buffer overflow lets a remote attacker run code","impact":"high","summary":"A heap-based buffer overflow in Microsoft Office Word lets an attacker send a crafted input over a network to write past allocated memory. The sources say this allows an unauthorized attacker to execute code.","audience":"everyone","category":"other","nicknames":[],"who_cares":["microsoft-office","word","windows"],"confidence":0.5,"fix_status":"unknown","needs_auth":"no","worst_case":"Attacker runs code on the affected machine over the network","analyst_note":"Find the Microsoft Security Response Center advisory for CVE-2026-112717 to get affected Word versions, fixed builds and whether user interaction is required.","how_to_check":"- unknown","plain_action":"Update Microsoft Word through Microsoft Update once Microsoft publishes a fix for this flaw.","product_name":"","needs_analyst":true,"not_affected_if":["unknown"],"who_is_affected":"Machines running Microsoft Office Word. The sources do not say which Word versions are affected, what file or network path triggers the flaw, or whether a preview pane or other automatic handling is involved. unknown","user_interaction":"unknown","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000681,"input_tokens":4494,"output_tokens":464,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Find the Microsoft Security Response Center advisory for CVE-2026-112717 to get affected Word versions, fixed builds and whether user interaction is required.","search":"'-112717':14A,17A '-2026':13A,16A 'alloc':47B 'allow':53B,69C 'attack':9A,36B,56B,72C 'base':27B,62C 'buffer':4A,28B,63C 'code':11A,59B,75C 'craft':39B 'cve':12A,15A 'execut':58B,74C 'heap':3A,26B,61C 'heap-bas':25B,60C 'input':40B 'let':6A,34B 'memori':48B 'microsoft':1A,19B,31B,66C 'microsoft-offic':18B 'network':43B,78C 'offic':20B,32B,67C 'overflow':5A,29B,64C 'past':46B 'remot':8A 'run':10A 'say':51B 'send':37B 'sourc':50B 'unauthor':55B,71C 'window':22B 'word':2A,23B,33B,68C 'write':45B","nicknames":[],"mitigations":[],"who_affected":"Machines running Microsoft Office Word. The sources do not say which Word versions are affected, what file or network path triggers the flaw, or whether a preview pane or other automatic handling is involved. unknown","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"everyone","plain_action":"Update Microsoft Word through Microsoft Update once Microsoft publishes a fix for this flaw.","pkeys":[],"ptokens":[],"labels":["high","microsoftoffice","other","windows","word"],"campaign_type":null,"search_a":"'-112717':14A,17A '-2026':13A,16A 'attack':9A 'buffer':4A 'code':11A 'cve':12A,15A 'heap':3A 'let':6A 'microsoft':1A 'overflow':5A 'remot':8A 'run':10A 'word':2A","search_b":"'alloc':47B 'allow':53B 'attack':36B,56B 'base':27B 'buffer':28B 'code':59B 'craft':39B 'execut':58B 'heap':26B 'heap-bas':25B 'input':40B 'let':34B 'memori':48B 'microsoft':19B,31B 'microsoft-offic':18B 'network':43B 'offic':20B,32B 'overflow':29B 'past':46B 'say':51B 'send':37B 'sourc':50B 'unauthor':55B 'window':22B 'word':23B,33B 'write':45B","search_c":"'allow':69C 'attack':72C 'base':62C 'buffer':63C 'code':75C 'execut':74C 'heap':61C 'heap-bas':60C 'microsoft':66C 'network':78C 'offic':67C 'overflow':64C 'unauthor':71C 'word':68C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:18:29+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-2026-112717","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-112717","severity":null,"published_at":"2026-11-10T19:18:29+00:00","modified_at":"2026-11-10T19:18:29+00:00","first_seen_at":"2026-11-10T19:24:30+00:00","fetched_at":"2026-11-10T19:24:30+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"}