{"id":"CVE-2026-124233","kind":"vulnerability","aliases":["CVE-2026-124233"],"related":[],"title":"Microsoft Word: buffer over-read lets a remote attacker leak information","description":"Buffer over-read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.","summary":"A buffer over-read in Microsoft Office Word lets an unauthorized attacker read memory it should not reach over a network. The impact is information disclosure, not code execution, according to the NVD description.","severity":"medium","cvss":6.5,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"Microsoft Office Word","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["microsoft-office","microsoft-word","package","windows"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:20:50+00:00","first_seen_at":"2026-11-10T19:25:14+00:00","triaged_at":"2026-11-10T19:56:13+00:00","updated_at":"2026-11-10T19:56:13+00:00","category":"package","confidence":0.4,"triage":{"at":"2026-11-10T19:56:13Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"Microsoft Word: buffer over-read lets a remote attacker leak information","impact":"low","summary":"A buffer over-read in Microsoft Office Word lets an unauthorized attacker read memory it should not reach over a network. The impact is information disclosure, not code execution, according to the NVD description.","audience":"everyone","category":"package","nicknames":[],"who_cares":["microsoft-office","microsoft-word","windows"],"confidence":0.4,"fix_status":"unknown","needs_auth":"no","worst_case":"attacker reads some memory contents from the document software","analyst_note":"Check the Microsoft Security Update Guide entry and NVD for affected Word builds, fixed versions and whether user interaction (opening a file) is required.","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":"medium"},"cost_usd":0.000643,"input_tokens":4489,"output_tokens":389,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-124233':15A,18A '-2026':14A,17A 'accord':60B 'allow':73C 'attack':10A,42B,76C 'buffer':3A,31B,65C 'code':58B 'cve':13A,16A 'descript':64B 'disclos':78C 'disclosur':56B 'execut':59B 'impact':53B 'inform':12A,55B,79C 'leak':11A 'let':7A,39B 'memori':44B 'microsoft':1A,19A,23B,26B,36B,70C 'microsoft-offic':22B 'microsoft-word':25B 'network':51B,82C 'nvd':63B 'offic':24B,37B,71C 'office':20A 'over-read':4A,32B,66C 'packag':28B 'reach':48B 'read':6A,34B,43B,68C 'remot':9A 'unauthor':41B,75C 'window':29B 'word':2A,21A,27B,38B,72C","nicknames":[],"mitigations":[],"who_affected":null,"tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"everyone","plain_action":null,"pkeys":["microsoftofficeword","officeword"],"ptokens":["microsoft","office","word"],"labels":["medium","microsoftoffice","microsoftword","package","vendor","windows"],"campaign_type":null,"search_a":"'-124233':15A,18A '-2026':14A,17A 'attack':10A 'buffer':3A 'cve':13A,16A 'inform':12A 'leak':11A 'let':7A 'microsoft':1A,19A 'office':20A 'over-read':4A 'read':6A 'remot':9A 'word':2A,21A","search_b":"'accord':60B 'attack':42B 'buffer':31B 'code':58B 'descript':64B 'disclosur':56B 'execut':59B 'impact':53B 'inform':55B 'let':39B 'memori':44B 'microsoft':23B,26B,36B 'microsoft-offic':22B 'microsoft-word':25B 'network':51B 'nvd':63B 'offic':24B,37B 'over-read':32B 'packag':28B 'reach':48B 'read':34B,43B 'unauthor':41B 'window':29B 'word':27B,38B","search_c":"'allow':73C 'attack':76C 'buffer':65C 'disclos':78C 'inform':79C 'microsoft':70C 'network':82C 'offic':71C 'over-read':66C 'read':68C 'unauthor':75C 'word':72C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:20:50+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","cvss_by":"secure@microsoft.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-124233","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-124233","severity":null,"published_at":"2026-11-10T19:20:50+00:00","modified_at":"2026-11-10T19:20:50+00:00","first_seen_at":"2026-11-10T19:25:14+00:00","fetched_at":"2026-11-10T19:25:14+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"}