{"id":"CVE-2026-111291","kind":"vulnerability","aliases":["CVE-2026-111291"],"related":[],"title":"Microsoft Office: out-of-bounds read lets a network attacker leak information","description":"Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information over a network.","summary":"A memory read past the end of a buffer in Microsoft Office can be triggered by an unauthorized attacker over a network. The attacker can disclose information from the affected system's memory.","severity":"medium","cvss":6.5,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["microsoft-office","other"],"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":"other","confidence":0.4,"triage":{"at":"2026-11-10T19:58:02Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"Microsoft Office: out-of-bounds read lets a network attacker leak information","impact":"low","summary":"A memory read past the end of a buffer in Microsoft Office can be triggered by an unauthorized attacker over a network. The attacker can disclose information from the affected system's memory.","audience":"businesses","category":"other","nicknames":[],"who_cares":["microsoft-office"],"confidence":0.4,"fix_status":"unknown","needs_auth":"no","worst_case":"attacker reads sensitive memory contents over the network","analyst_note":"Sources list no affected versions, fix or patch details; check the Microsoft Security Response Center entry for CVE-2026-111291 and the NVD page.","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":0.000623,"input_tokens":4489,"output_tokens":348,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-111291':16A,19A '-2026':15A,18A 'affect':52B 'allow':64C 'attack':11A,41B,46B,67C 'bound':6A,59C 'buffer':31B 'cve':14A,17A 'disclos':48B,69C 'end':28B 'inform':13A,49B,70C 'leak':12A 'let':8A 'memori':24B,55B 'microsoft':1A,21B,33B,62C 'microsoft-offic':20B 'network':10A,44B,73C 'offic':2A,22B,34B,63C 'out-of-bound':3A,56C 'past':26B 'read':7A,25B,60C 'system':53B 'trigger':37B 'unauthor':40B,66C","nicknames":[],"mitigations":[],"who_affected":null,"tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["medium","microsoftoffice","other"],"campaign_type":null,"search_a":"'-111291':16A,19A '-2026':15A,18A 'attack':11A 'bound':6A 'cve':14A,17A 'inform':13A 'leak':12A 'let':8A 'microsoft':1A 'network':10A 'offic':2A 'out-of-bound':3A 'read':7A","search_b":"'affect':52B 'attack':41B,46B 'buffer':31B 'disclos':48B 'end':28B 'inform':49B 'memori':24B,55B 'microsoft':21B,33B 'microsoft-offic':20B 'network':44B 'offic':22B,34B 'past':26B 'read':25B 'system':53B 'trigger':37B 'unauthor':40B","search_c":"'allow':64C 'attack':67C 'bound':59C 'disclos':69C 'inform':70C 'microsoft':62C 'network':73C 'offic':63C 'out-of-bound':56C 'read':60C 'unauthor':66C","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-2026-111291","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-111291","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"}