{"id":"CVE-2026-109487","kind":"vulnerability","aliases":["CVE-2026-109487"],"related":[],"title":"Microsoft PowerPoint: use-after-free lets a network attacker run code","description":"Use after free in Microsoft Office PowerPoint allows an unauthorized attacker to execute code over a network.","summary":"A memory-handling bug in Microsoft Office PowerPoint lets an unauthorized attacker run code on a victim's machine over a network. The sources give no further detail on how the file or message is delivered.","severity":"high","cvss":7.5,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["microsoft-office","package","powerpoint","windows"],"not_affected_if":[],"how_to_check":"- Open PowerPoint and check its version under File > Account (or About PowerPoint) against Microsoft's security update guide for CVE-2026-109487","fix":null,"status":"open","published_at":"2026-11-10T19:18:17+00:00","first_seen_at":"2026-11-10T19:24:25+00:00","triaged_at":"2026-11-10T19:47:22+00:00","updated_at":"2026-11-10T19:47:22+00:00","category":"package","confidence":0.4,"triage":{"at":"2026-11-10T19:47:22Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"Microsoft PowerPoint: use-after-free lets a network attacker run code","impact":"high","summary":"A memory-handling bug in Microsoft Office PowerPoint lets an unauthorized attacker run code on a victim's machine over a network. The sources give no further detail on how the file or message is delivered.","audience":"everyone","category":"package","nicknames":[],"who_cares":["microsoft-office","powerpoint","windows"],"confidence":0.4,"fix_status":"unknown","needs_auth":"unknown","worst_case":"Attacker runs code on the victim's computer over the network.","analyst_note":"Find the Microsoft Security Response Center entry for CVE-2026-109487 to confirm affected builds, fixed versions and whether user interaction (opening a file) is needed.","how_to_check":"- Open PowerPoint and check its version under File > Account (or About PowerPoint) against Microsoft's security update guide for CVE-2026-109487\n- unknown","plain_action":"Update Microsoft PowerPoint through Microsoft Office update channels once Microsoft lists a fixed version for this flaw.","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":0.000684,"input_tokens":4488,"output_tokens":471,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Find the Microsoft Security Response Center entry for CVE-2026-109487 to confirm affected builds, fixed versions and whether user interaction (opening a file) is needed.","search":"'-109487':15A,18A '-2026':14A,17A 'allow':69C 'attack':10A,37B,72C 'bug':29B 'code':12A,39B,75C 'cve':13A,16A 'deliv':61B 'detail':53B 'execut':74C 'file':57B 'free':6A,64C 'give':50B 'handl':28B 'let':7A,34B 'machin':44B 'memori':27B 'memory-handl':26B 'messag':59B 'microsoft':1A,20B,31B,66C 'microsoft-offic':19B 'network':9A,47B,78C 'offic':21B,32B,67C 'packag':22B 'powerpoint':2A,23B,33B,68C 'run':11A,38B 'sourc':49B 'unauthor':36B,71C 'use':4A,62C 'use-after-fre':3A 'victim':42B 'window':24B","nicknames":[],"mitigations":[],"who_affected":null,"tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"everyone","plain_action":"Update Microsoft PowerPoint through Microsoft Office update channels once Microsoft lists a fixed version for this flaw.","pkeys":[],"ptokens":[],"labels":["high","microsoftoffice","package","powerpoint","windows"],"campaign_type":null,"search_a":"'-109487':15A,18A '-2026':14A,17A 'attack':10A 'code':12A 'cve':13A,16A 'free':6A 'let':7A 'microsoft':1A 'network':9A 'powerpoint':2A 'run':11A 'use':4A 'use-after-fre':3A","search_b":"'attack':37B 'bug':29B 'code':39B 'deliv':61B 'detail':53B 'file':57B 'give':50B 'handl':28B 'let':34B 'machin':44B 'memori':27B 'memory-handl':26B 'messag':59B 'microsoft':20B,31B 'microsoft-offic':19B 'network':47B 'offic':21B,32B 'packag':22B 'powerpoint':23B,33B 'run':38B 'sourc':49B 'unauthor':36B 'victim':42B 'window':24B","search_c":"'allow':69C 'attack':72C 'code':75C 'execut':74C 'free':64C 'microsoft':66C 'network':78C 'offic':67C 'powerpoint':68C 'unauthor':71C 'use':62C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:18:17+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-2026-109487","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-109487","severity":null,"published_at":"2026-11-10T19:18:17+00:00","modified_at":"2026-11-10T19:18:17+00:00","first_seen_at":"2026-11-10T19:24:25+00:00","fetched_at":"2026-11-10T19:24:25+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"}