{"id":"CVE-2026-110064","kind":"vulnerability","aliases":["CVE-2026-110064"],"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 unauthorized attacker run code over a network. The sources give no further detail on the trigger or the affected Word 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","word"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:18:24+00:00","first_seen_at":"2026-11-10T19:24:27+00:00","triaged_at":"2026-11-10T19:32:26+00:00","updated_at":"2026-11-10T19:32:26+00:00","category":"other","confidence":0.4,"triage":{"at":"2026-11-10T19:32:26Z","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 unauthorized attacker run code over a network. The sources give no further detail on the trigger or the affected Word versions.","audience":"everyone","category":"other","nicknames":[],"who_cares":["microsoft-office","word"],"confidence":0.4,"fix_status":"unknown","needs_auth":"unknown","worst_case":"attacker runs code on the victim's machine over the network","analyst_note":"Find the vendor advisory for CVE-2026-110064 at msrc.microsoft.com to confirm affected Word builds, whether user interaction (opening a file) is needed, and the patch.","how_to_check":"- unknown","plain_action":"","product_name":"Microsoft Office Word","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":0.000647,"input_tokens":4494,"output_tokens":396,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Find the vendor advisory for CVE-2026-110064 at msrc.microsoft.com to confirm affected Word builds, whether user interaction (opening a file) is needed, and the patch.","search":"'-110064':14A,17A '-2026':13A,16A 'affect':56B 'allow':68C 'attack':9A,39B,71C 'base':29B,61C 'buffer':4A,30B,62C 'code':11A,41B,74C 'cve':12A,15A 'detail':50B 'execut':73C 'give':47B 'heap':3A,28B,60C 'heap-bas':27B,59C 'let':6A,36B 'microsoft':1A,18A,22B,33B,65C 'microsoft-offic':21B 'network':44B,77C 'offic':23B,34B,66C 'office':19A 'overflow':5A,31B,63C 'remot':8A 'run':10A,40B 'sourc':46B 'trigger':53B 'unauthor':38B,70C 'version':58B 'word':2A,20A,25B,35B,57B,67C","nicknames":[],"mitigations":[],"who_affected":null,"tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"everyone","plain_action":null,"pkeys":["microsoftofficeword","officeword"],"ptokens":["microsoft","office","word"],"labels":["high","microsoftoffice","other","vendor","word"],"campaign_type":null,"search_a":"'-110064':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":"'affect':56B 'attack':39B 'base':29B 'buffer':30B 'code':41B 'detail':50B 'give':47B 'heap':28B 'heap-bas':27B 'let':36B 'microsoft':22B,33B 'microsoft-offic':21B 'network':44B 'offic':23B,34B 'overflow':31B 'run':40B 'sourc':46B 'trigger':53B 'unauthor':38B 'version':58B 'word':25B,35B,57B","search_c":"'allow':68C 'attack':71C 'base':61C 'buffer':62C 'code':74C 'execut':73C 'heap':60C 'heap-bas':59C 'microsoft':65C 'network':77C 'offic':66C 'overflow':63C 'unauthor':70C 'word':67C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:18:24+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-2026-110064","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-110064","severity":null,"published_at":"2026-11-10T19:18:24+00:00","modified_at":"2026-11-10T19:18:24+00:00","first_seen_at":"2026-11-10T19:24:27+00:00","fetched_at":"2026-11-10T19:24:27+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"}