{"id":"CVE-2026-112733","kind":"vulnerability","aliases":["CVE-2026-112733"],"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 can be triggered over a network by an unauthorized attacker. A successful attack lets the attacker execute code on the victim's machine.","severity":"high","cvss":8.8,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"Microsoft Office Word","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["microsoft-office","other","windows","word"],"not_affected_if":["unknown"],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:18:32+00:00","first_seen_at":"2026-11-10T19:24:31+00:00","triaged_at":"2026-11-10T19:31:55+00:00","updated_at":"2026-11-10T19:31:55+00:00","category":"other","confidence":0.5,"triage":{"at":"2026-11-10T19:31:55Z","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 can be triggered over a network by an unauthorized attacker. A successful attack lets the attacker execute code on the victim's machine.","audience":"everyone","category":"other","nicknames":[],"who_cares":["microsoft-office","word","windows"],"confidence":0.5,"fix_status":"unknown","needs_auth":"no","worst_case":"Code runs on the victim's machine after a network-delivered document","analyst_note":"Check the Microsoft Security Response Center advisory for CVE-2026-112733 for affected versions, fixed builds and whether user interaction is required.","how_to_check":"- unknown","plain_action":"Update Microsoft Word through Microsoft's usual Office updates once Microsoft publishes a fix; the sources do not name a fixed version.","product_name":"Microsoft Office Word","needs_analyst":true,"not_affected_if":["unknown"],"who_is_affected":"Anyone running Microsoft Office Word that the sources do not list by version. The sources do not say which versions are affected or whether a special setting is needed, so unknown.","user_interaction":"unknown","product_ecosystem":"vendor","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000694,"input_tokens":4494,"output_tokens":489,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Check the Microsoft Security Response Center advisory for CVE-2026-112733 for affected versions, fixed builds and whether user interaction is required.","search":"'-112733':14A,17A '-2026':13A,16A 'allow':69C 'attack':9A,46B,49B,52B,72C 'base':30B,62C 'buffer':4A,31B,63C 'code':11A,54B,75C 'cve':12A,15A 'execut':53B,74C 'heap':3A,29B,61C 'heap-bas':28B,60C 'let':6A,50B 'machin':59B 'microsoft':1A,18A,22B,34B,66C 'microsoft-offic':21B 'network':42B,78C 'offic':23B,35B,67C 'office':19A 'overflow':5A,32B,64C 'remot':8A 'run':10A 'success':48B 'trigger':39B 'unauthor':45B,71C 'victim':57B 'window':25B 'word':2A,20A,26B,36B,68C","nicknames":[],"mitigations":[],"who_affected":"Anyone running Microsoft Office Word that the sources do not list by version. The sources do not say which versions are affected or whether a special setting is needed, so unknown.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"everyone","plain_action":"Update Microsoft Word through Microsoft's usual Office updates once Microsoft publishes a fix; the sources do not name a fixed version.","pkeys":["microsoftofficeword","officeword"],"ptokens":["microsoft","office","word"],"labels":["high","microsoftoffice","other","vendor","windows","word"],"campaign_type":null,"search_a":"'-112733':14A,17A '-2026':13A,16A 'attack':9A 'buffer':4A 'code':11A 'cve':12A,15A 'heap':3A 'let':6A 'microsoft':1A,18A 'office':19A 'overflow':5A 'remot':8A 'run':10A 'word':2A,20A","search_b":"'attack':46B,49B,52B 'base':30B 'buffer':31B 'code':54B 'execut':53B 'heap':29B 'heap-bas':28B 'let':50B 'machin':59B 'microsoft':22B,34B 'microsoft-offic':21B 'network':42B 'offic':23B,35B 'overflow':32B 'success':48B 'trigger':39B 'unauthor':45B 'victim':57B 'window':25B 'word':26B,36B","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":"2026-11-10T19:18:32+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-2026-112733","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-112733","severity":null,"published_at":"2026-11-10T19:18:32+00:00","modified_at":"2026-11-10T19:18:32+00:00","first_seen_at":"2026-11-10T19:24:31+00:00","fetched_at":"2026-11-10T19:24:31+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"}