{"id":"CVE-2026-116925","kind":"vulnerability","aliases":["CVE-2026-116925"],"related":[],"title":"Microsoft Word: heap overflow lets an attacker run code over a network","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 unauthorized attacker run code on a victim's machine over a network. The sources give a CVSS score of 8.8 and do not describe the trigger in more detail.","severity":"high","cvss":8.8,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["microsoft-office","other","windows","word"],"not_affected_if":[],"how_to_check":"- Check the installed Word version in File > Account > About Word, or with Microsoft's Office update channel.","fix":null,"status":"open","published_at":"2026-11-10T19:19:19+00:00","first_seen_at":"2026-11-10T19:24:45+00:00","triaged_at":"2026-11-10T19:30:28+00:00","updated_at":"2026-11-10T19:30:28+00:00","category":"other","confidence":0.5,"triage":{"at":"2026-11-10T19:30:28Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"Microsoft Word: heap overflow lets an attacker run code over a network","impact":"high","summary":"A heap-based buffer overflow in Microsoft Office Word lets an unauthorized attacker run code on a victim's machine over a network. The sources give a CVSS score of 8.8 and do not describe the trigger in more detail.","audience":"businesses","category":"other","nicknames":[],"who_cares":["microsoft-office","windows","word"],"confidence":0.5,"fix_status":"unknown","needs_auth":"no","worst_case":"Attacker runs code on the victim's machine over the network","analyst_note":"Confirm affected Word builds, whether a document open is required, and the Microsoft security update that fixes CVE-2026-116925 from the MSRC advisory.","how_to_check":"- Check the installed Word version in File > Account > About Word, or with Microsoft's Office update channel.\n- unknown for anything more specific; the sources do not say which builds are affected.","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":[],"who_is_affected":"Organisations running Microsoft Office Word. The sources do not say which versions or builds are affected, or whether opening a document is enough to trigger the flaw. unknown","user_interaction":"unknown","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000688,"input_tokens":4494,"output_tokens":477,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Confirm affected Word builds, whether a document open is required, and the Microsoft security update that fixes CVE-2026-116925 from the MSRC advisory.","search":"'-116925':15A,18A '-2026':14A,17A '8.8':56B 'allow':75C 'attack':7A,38B,78C 'base':28B,68C 'buffer':29B,69C 'code':9A,40B,81C 'cve':13A,16A 'cvss':53B 'describ':60B 'detail':65B 'execut':80C 'give':51B 'heap':3A,27B,67C 'heap-bas':26B,66C 'let':5A,35B 'machin':45B 'microsoft':1A,20B,32B,72C 'microsoft-offic':19B 'network':12A,48B,84C 'offic':21B,33B,73C 'overflow':4A,30B,70C 'run':8A,39B 'score':54B 'sourc':50B 'trigger':62B 'unauthor':37B,77C 'victim':43B 'window':23B 'word':2A,24B,34B,74C","nicknames":[],"mitigations":[],"who_affected":"Organisations running Microsoft Office Word. The sources do not say which versions or builds are affected, or whether opening a document is enough to trigger the flaw. unknown","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["high","microsoftoffice","other","windows","word"],"campaign_type":null,"search_a":"'-116925':15A,18A '-2026':14A,17A 'attack':7A 'code':9A 'cve':13A,16A 'heap':3A 'let':5A 'microsoft':1A 'network':12A 'overflow':4A 'run':8A 'word':2A","search_b":"'8.8':56B 'attack':38B 'base':28B 'buffer':29B 'code':40B 'cvss':53B 'describ':60B 'detail':65B 'give':51B 'heap':27B 'heap-bas':26B 'let':35B 'machin':45B 'microsoft':20B,32B 'microsoft-offic':19B 'network':48B 'offic':21B,33B 'overflow':30B 'run':39B 'score':54B 'sourc':50B 'trigger':62B 'unauthor':37B 'victim':43B 'window':23B 'word':24B,34B","search_c":"'allow':75C 'attack':78C 'base':68C 'buffer':69C 'code':81C 'execut':80C 'heap':67C 'heap-bas':66C 'microsoft':72C 'network':84C 'offic':73C 'overflow':70C 'unauthor':77C 'word':74C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:19:19+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-2026-116925","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116925","severity":null,"published_at":"2026-11-10T19:19:19+00:00","modified_at":"2026-11-10T19:19:19+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"}