{"id":"CVE-2026-111286","kind":"vulnerability","aliases":["CVE-2026-111286"],"related":[],"title":"Microsoft Office: use-after-free lets a network attacker run code","description":"Use after free in Microsoft Office allows an unauthorized attacker to execute code over a network.","summary":"A use-after-free bug in Microsoft Office lets an unauthorized attacker run code on a victim's machine over a network. The sources give a CVSS score of 7.5 and no affected version ranges.","severity":"high","cvss":7.5,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["microsoft-office","other","windows"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:18:25+00:00","first_seen_at":"2026-11-10T19:24:28+00:00","triaged_at":"2026-11-10T19:47:17+00:00","updated_at":"2026-11-10T19:47:17+00:00","category":"other","confidence":0.5,"triage":{"at":"2026-11-10T19:47:17Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"Microsoft Office: use-after-free lets a network attacker run code","impact":"high","summary":"A use-after-free bug in Microsoft Office lets an unauthorized attacker run code on a victim's machine over a network. The sources give a CVSS score of 7.5 and no affected version ranges.","audience":"everyone","category":"other","nicknames":[],"who_cares":["microsoft-office","windows"],"confidence":0.5,"fix_status":"unknown","needs_auth":"no","worst_case":"attacker runs code on the victim's computer over the network","analyst_note":"Check the Microsoft Security Response Center entry for CVE-2026-111286 for affected Office builds, the fixed build and whether user interaction (opening a file) is required.","how_to_check":"unknown","plain_action":"Update Microsoft Office through Windows Update or the Microsoft 365 update channel once Microsoft releases a fix for CVE-2026-111286.","product_name":"","needs_analyst":true,"not_affected_if":[],"who_is_affected":"unknown","user_interaction":"unknown","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000653,"input_tokens":4476,"output_tokens":410,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Check the Microsoft Security Response Center entry for CVE-2026-111286 for affected Office builds, the fixed build and whether user interaction (opening a file) is required.","search":"'-111286':15A,18A '-2026':14A,17A '7.5':54B 'affect':57B 'allow':66C 'attack':10A,36B,69C 'bug':29B 'code':12A,38B,72C 'cve':13A,16A 'cvss':51B 'execut':71C 'free':6A,28B,62C 'give':49B 'let':7A,33B 'machin':43B 'microsoft':1A,20B,31B,64C 'microsoft-offic':19B 'network':9A,46B,75C 'offic':2A,21B,32B,65C 'rang':59B 'run':11A,37B 'score':52B 'sourc':48B 'unauthor':35B,68C 'use':4A,26B,60C 'use-after-fre':3A,25B 'version':58B 'victim':41B 'window':23B","nicknames":[],"mitigations":[],"who_affected":null,"tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"everyone","plain_action":"Update Microsoft Office through Windows Update or the Microsoft 365 update channel once Microsoft releases a fix for CVE-2026-111286.","pkeys":[],"ptokens":[],"labels":["high","microsoftoffice","other","windows"],"campaign_type":null,"search_a":"'-111286':15A,18A '-2026':14A,17A 'attack':10A 'code':12A 'cve':13A,16A 'free':6A 'let':7A 'microsoft':1A 'network':9A 'offic':2A 'run':11A 'use':4A 'use-after-fre':3A","search_b":"'7.5':54B 'affect':57B 'attack':36B 'bug':29B 'code':38B 'cvss':51B 'free':28B 'give':49B 'let':33B 'machin':43B 'microsoft':20B,31B 'microsoft-offic':19B 'network':46B 'offic':21B,32B 'rang':59B 'run':37B 'score':52B 'sourc':48B 'unauthor':35B 'use':26B 'use-after-fre':25B 'version':58B 'victim':41B 'window':23B","search_c":"'allow':66C 'attack':69C 'code':72C 'execut':71C 'free':62C 'microsoft':64C 'network':75C 'offic':65C 'unauthor':68C 'use':60C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:18:25+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:H/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-2026-111286","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-111286","severity":null,"published_at":"2026-11-10T19:18:25+00:00","modified_at":"2026-11-10T19:18:25+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"}