{"id":"CVE-2026-112735","kind":"vulnerability","aliases":["CVE-2026-112735"],"related":[],"title":"Microsoft Word: use-after-free lets a network attacker run code","description":"Use after free in Microsoft Office Word allows an unauthorized attacker to execute code over a network.","summary":"A use-after-free bug in Microsoft Office Word lets an unauthorized attacker run code on a machine over the network. The sources give a CVSS score of 8.8 and no fixed version.","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":"- Open Word and check its version under File > Account (Microsoft 365) or Help > About\n- Compare the build against Microsoft's security update guide entry for CVE-2026-112735","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":"2026-11-10T19:31:53+00:00","updated_at":"2026-11-10T19:31:53+00:00","category":"other","confidence":0.5,"triage":{"at":"2026-11-10T19:31:53Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"Microsoft Word: use-after-free lets a network attacker run code","impact":"high","summary":"A use-after-free bug in Microsoft Office Word lets an unauthorized attacker run code on a machine over the network. The sources give a CVSS score of 8.8 and no fixed version.","audience":"businesses","category":"other","nicknames":[],"who_cares":["microsoft-office","word","windows"],"confidence":0.5,"fix_status":"unknown","needs_auth":"unknown","worst_case":"Attacker runs arbitrary code on the victim's machine over the network","analyst_note":"Check Microsoft's security update guide for CVE-2026-112735 for affected builds, fixed versions and whether user interaction (opening a file) is required.","how_to_check":"- Open Word and check its version under File > Account (Microsoft 365) or Help > About\n- Compare the build against Microsoft's security update guide entry for CVE-2026-112735\n- unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":[],"who_is_affected":"Organisations that run Microsoft Office Word on their desktops or in Office deployments; the sources do not list affected versions or the trigger path beyond a network attack. unknown","user_interaction":"unknown","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000686,"input_tokens":4480,"output_tokens":475,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Check Microsoft's security update guide for CVE-2026-112735 for affected builds, fixed versions and whether user interaction (opening a file) is required.","search":"'-112735':15A,18A '-2026':14A,17A '8.8':54B 'allow':66C 'attack':10A,38B,69C 'bug':30B 'code':12A,40B,72C 'cve':13A,16A 'cvss':51B 'execut':71C 'fix':57B 'free':6A,29B,61C 'give':49B 'let':7A,35B 'machin':43B 'microsoft':1A,20B,32B,63C 'microsoft-offic':19B 'network':9A,46B,75C 'offic':21B,33B,64C 'run':11A,39B 'score':52B 'sourc':48B 'unauthor':37B,68C 'use':4A,27B,59C 'use-after-fre':3A,26B 'version':58B 'window':23B 'word':2A,24B,34B,65C","nicknames":[],"mitigations":[],"who_affected":"Organisations that run Microsoft Office Word on their desktops or in Office deployments; the sources do not list affected versions or the trigger path beyond a network attack. 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":"'-112735':15A,18A '-2026':14A,17A 'attack':10A 'code':12A 'cve':13A,16A 'free':6A 'let':7A 'microsoft':1A 'network':9A 'run':11A 'use':4A 'use-after-fre':3A 'word':2A","search_b":"'8.8':54B 'attack':38B 'bug':30B 'code':40B 'cvss':51B 'fix':57B 'free':29B 'give':49B 'let':35B 'machin':43B 'microsoft':20B,32B 'microsoft-offic':19B 'network':46B 'offic':21B,33B 'run':39B 'score':52B 'sourc':48B 'unauthor':37B 'use':27B 'use-after-fre':26B 'version':58B 'window':23B 'word':24B,34B","search_c":"'allow':66C 'attack':69C 'code':72C 'execut':71C 'free':61C 'microsoft':63C 'network':75C 'offic':64C 'unauthor':68C 'use':59C 'word':65C","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-2026-112735","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-112735","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"}