{"id":"CVE-2026-119993","kind":"vulnerability","aliases":["CVE-2026-119993"],"related":[],"title":"Microsoft Outlook: type confusion lets an attacker over a network read information","description":"Access of resource using incompatible type ('type confusion') in Microsoft Office Outlook allows an unauthorized attacker to disclose information over a network.","summary":"Microsoft Outlook mishandles a resource of an incompatible type, which lets an unauthorized attacker disclose information over a network. The sources give no further detail on what data is exposed or how the trigger works.","severity":"medium","cvss":6.5,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["microsoft-office","other","outlook","windows"],"not_affected_if":[],"how_to_check":"- Check the installed Outlook build against Microsoft's security update guide for CVE-2026-119993","fix":null,"status":"open","published_at":"2026-11-10T19:20:24+00:00","first_seen_at":"2026-11-10T19:25:07+00:00","triaged_at":"2026-11-10T19:56:22+00:00","updated_at":"2026-11-10T19:56:22+00:00","category":"other","confidence":0.4,"triage":{"at":"2026-11-10T19:56:22Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"Microsoft Outlook: type confusion lets an attacker over a network read information","impact":"low","summary":"Microsoft Outlook mishandles a resource of an incompatible type, which lets an unauthorized attacker disclose information over a network. The sources give no further detail on what data is exposed or how the trigger works.","audience":"everyone","category":"other","nicknames":[],"who_cares":["outlook","microsoft-office","windows"],"confidence":0.4,"fix_status":"unknown","needs_auth":"unknown","worst_case":"Attacker discloses information from Outlook over the network","analyst_note":"Find Microsoft's advisory for CVE-2026-119993 to confirm affected builds, fixed versions, and whether user interaction is required.","how_to_check":"- Check the installed Outlook build against Microsoft's security update guide for CVE-2026-119993\n- unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":[],"who_is_affected":"Microsoft Outlook users on affected builds receiving network traffic from an attacker. The sources do not state affected versions, required configuration or whether user interaction is needed.","user_interaction":"unknown","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000675,"input_tokens":4505,"output_tokens":449,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-119993':15A,18A '-2026':14A,17A 'access':60C 'allow':72C 'attack':7A,38B,75C 'confus':4A,67C 'cve':13A,16A 'data':52B 'detail':49B 'disclos':39B,77C 'expos':54B 'give':46B 'incompat':32B,64C 'inform':12A,40B,78C 'let':5A,35B 'microsoft':1A,20B,25B,69C 'microsoft-offic':19B 'mishandl':27B 'network':10A,43B,81C 'offic':21B,70C 'outlook':2A,23B,26B,71C 'read':11A 'resourc':29B,62C 'sourc':45B 'trigger':58B 'type':3A,33B,65C,66C 'unauthor':37B,74C 'use':63C 'window':24B 'work':59B","nicknames":[],"mitigations":[],"who_affected":"Microsoft Outlook users on affected builds receiving network traffic from an attacker. The sources do not state affected versions, required configuration or whether user interaction is needed.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"everyone","plain_action":null,"pkeys":[],"ptokens":[],"labels":["medium","microsoftoffice","other","outlook","windows"],"campaign_type":null,"search_a":"'-119993':15A,18A '-2026':14A,17A 'attack':7A 'confus':4A 'cve':13A,16A 'inform':12A 'let':5A 'microsoft':1A 'network':10A 'outlook':2A 'read':11A 'type':3A","search_b":"'attack':38B 'data':52B 'detail':49B 'disclos':39B 'expos':54B 'give':46B 'incompat':32B 'inform':40B 'let':35B 'microsoft':20B,25B 'microsoft-offic':19B 'mishandl':27B 'network':43B 'offic':21B 'outlook':23B,26B 'resourc':29B 'sourc':45B 'trigger':58B 'type':33B 'unauthor':37B 'window':24B 'work':59B","search_c":"'access':60C 'allow':72C 'attack':75C 'confus':67C 'disclos':77C 'incompat':64C 'inform':78C 'microsoft':69C 'network':81C 'offic':70C 'outlook':71C 'resourc':62C 'type':65C,66C 'unauthor':74C 'use':63C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:20:24+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-2026-119993","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-119993","severity":null,"published_at":"2026-11-10T19:20:24+00:00","modified_at":"2026-11-10T19:20:24+00:00","first_seen_at":"2026-11-10T19:25:07+00:00","fetched_at":"2026-11-10T19:25:07+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"}