{"id":"CVE-2026-111292","kind":"vulnerability","aliases":["CVE-2026-111292"],"related":[],"title":"Microsoft Excel: out-of-bounds read lets remote attacker leak information","description":"Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.","summary":"Microsoft Office Excel has an out-of-bounds read flaw that lets an unauthorized attacker disclose information over a network. The sources give no detail on what data leaks or how the file is delivered.","severity":"medium","cvss":6.5,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["microsoft-excel","microsoft-office","package","windows"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:18:26+00:00","first_seen_at":"2026-11-10T19:24:28+00:00","triaged_at":"2026-11-10T19:58:02+00:00","updated_at":"2026-11-10T19:58:02+00:00","category":"package","confidence":0.4,"triage":{"at":"2026-11-10T19:58:02Z","model":"claude-haiku-5-5","output":{"fix":"- unknown","reach":"network","title":"Microsoft Excel: out-of-bounds read lets remote attacker leak information","impact":"low","summary":"Microsoft Office Excel has an out-of-bounds read flaw that lets an unauthorized attacker disclose information over a network. The sources give no detail on what data leaks or how the file is delivered.","audience":"everyone","category":"package","nicknames":[],"who_cares":["microsoft-excel","microsoft-office","windows"],"confidence":0.4,"fix_status":"unknown","needs_auth":"no","worst_case":"unauthorized attacker reads some memory contents from Excel","analyst_note":"Check the Microsoft Security Update Guide entry for CVE-2026-111292 for affected Office builds, patched versions and whether user interaction (opening a file) is required.","how_to_check":"- unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":[],"who_is_affected":"unknown","user_interaction":"unknown","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000639,"input_tokens":4495,"output_tokens":379,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-111292':15A,18A '-2026':14A,17A 'allow':72C 'attack':10A,42B,75C 'bound':6A,35B,66C 'cve':13A,16A 'data':55B 'deliv':62B 'detail':52B 'disclos':43B,77C 'excel':2A,21B,29B,71C 'file':60B 'flaw':37B 'give':50B 'inform':12A,44B,78C 'leak':11A,56B 'let':8A,39B 'microsoft':1A,20B,23B,27B,69C 'microsoft-excel':19B 'microsoft-offic':22B 'network':47B,81C 'offic':24B,28B,70C 'out-of-bound':3A,32B,63C 'packag':25B 'read':7A,36B,67C 'remot':9A 'sourc':49B 'unauthor':41B,74C 'window':26B","nicknames":[],"mitigations":[],"who_affected":null,"tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"everyone","plain_action":null,"pkeys":[],"ptokens":[],"labels":["medium","microsoftexcel","microsoftoffice","package","windows"],"campaign_type":null,"search_a":"'-111292':15A,18A '-2026':14A,17A 'attack':10A 'bound':6A 'cve':13A,16A 'excel':2A 'inform':12A 'leak':11A 'let':8A 'microsoft':1A 'out-of-bound':3A 'read':7A 'remot':9A","search_b":"'attack':42B 'bound':35B 'data':55B 'deliv':62B 'detail':52B 'disclos':43B 'excel':21B,29B 'file':60B 'flaw':37B 'give':50B 'inform':44B 'leak':56B 'let':39B 'microsoft':20B,23B,27B 'microsoft-excel':19B 'microsoft-offic':22B 'network':47B 'offic':24B,28B 'out-of-bound':32B 'packag':25B 'read':36B 'sourc':49B 'unauthor':41B 'window':26B","search_c":"'allow':72C 'attack':75C 'bound':66C 'disclos':77C 'excel':71C 'inform':78C 'microsoft':69C 'network':81C 'offic':70C 'out-of-bound':63C 'read':67C 'unauthor':74C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:18:26+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-2026-111292","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-111292","severity":null,"published_at":"2026-11-10T19:18:26+00:00","modified_at":"2026-11-10T19:18:26+00:00","first_seen_at":"2026-11-10T19:24:28+00:00","fetched_at":"2026-11-10T19:24:28+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"}