{"id":"CVE-2026-112726","kind":"vulnerability","aliases":["CVE-2026-112726"],"related":[],"title":"Microsoft Word: heap buffer overflow lets 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 unauthorized attacker run code over a network. The NVD entry gives a CVSS score of 8.8 and does not describe the trigger or the affected versions.","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":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:18:31+00:00","first_seen_at":"2026-11-10T19:24:30+00:00","triaged_at":"2026-11-10T19:32:00+00:00","updated_at":"2026-11-10T19:32:00+00:00","category":"other","confidence":0.5,"triage":{"at":"2026-11-10T19:32:00Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"Microsoft Word: heap buffer overflow lets remote attacker run code","impact":"high","summary":"A heap-based buffer overflow in Microsoft Office Word lets an unauthorized attacker run code over a network. The NVD entry gives a CVSS score of 8.8 and does not describe the trigger or the affected versions.","audience":"businesses","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 machine over the network","analyst_note":"Find the Microsoft Security Update Guide entry for CVE-2026-112726 to confirm affected Office builds, the fixed build, and whether user interaction is needed.","how_to_check":"- unknown","plain_action":"","product_name":"Microsoft Office Word","needs_analyst":true,"not_affected_if":[],"who_is_affected":"Organizations that run Microsoft Word through Microsoft Office. The sources do not say which Office versions are affected or what user action triggers the flaw. unknown","user_interaction":"unknown","product_ecosystem":"vendor","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000674,"input_tokens":4494,"output_tokens":449,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Find the Microsoft Security Update Guide entry for CVE-2026-112726 to confirm affected Office builds, the fixed build, and whether user interaction is needed.","search":"'-112726':13A,16A '-2026':12A,15A '8.8':53B 'affect':62B 'allow':73C 'attack':8A,39B,76C 'base':29B,66C 'buffer':4A,30B,67C 'code':10A,41B,79C 'cve':11A,14A 'cvss':50B 'describ':57B 'entri':47B 'execut':78C 'give':48B 'heap':3A,28B,65C 'heap-bas':27B,64C 'let':6A,36B 'microsoft':1A,17A,21B,33B,70C 'microsoft-offic':20B 'network':44B,82C 'nvd':46B 'offic':22B,34B,71C 'office':18A 'overflow':5A,31B,68C 'remot':7A 'run':9A,40B 'score':51B 'trigger':59B 'unauthor':38B,75C 'version':63B 'window':24B 'word':2A,19A,25B,35B,72C","nicknames":[],"mitigations":[],"who_affected":"Organizations that run Microsoft Word through Microsoft Office. The sources do not say which Office versions are affected or what user action triggers the flaw. unknown","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":["microsoftofficeword","officeword"],"ptokens":["microsoft","office","word"],"labels":["high","microsoftoffice","other","vendor","windows","word"],"campaign_type":null,"search_a":"'-112726':13A,16A '-2026':12A,15A 'attack':8A 'buffer':4A 'code':10A 'cve':11A,14A 'heap':3A 'let':6A 'microsoft':1A,17A 'office':18A 'overflow':5A 'remot':7A 'run':9A 'word':2A,19A","search_b":"'8.8':53B 'affect':62B 'attack':39B 'base':29B 'buffer':30B 'code':41B 'cvss':50B 'describ':57B 'entri':47B 'give':48B 'heap':28B 'heap-bas':27B 'let':36B 'microsoft':21B,33B 'microsoft-offic':20B 'network':44B 'nvd':46B 'offic':22B,34B 'overflow':31B 'run':40B 'score':51B 'trigger':59B 'unauthor':38B 'version':63B 'window':24B 'word':25B,35B","search_c":"'allow':73C 'attack':76C 'base':66C 'buffer':67C 'code':79C 'execut':78C 'heap':65C 'heap-bas':64C 'microsoft':70C 'network':82C 'offic':71C 'overflow':68C 'unauthor':75C 'word':72C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:18:31+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-2026-112726","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-112726","severity":null,"published_at":"2026-11-10T19:18:31+00:00","modified_at":"2026-11-10T19:18:31+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"}