{"id":"CVE-2026-96152","kind":"vulnerability","aliases":["CVE-2026-96152"],"related":[],"title":"Windows Installer: stack overflow lets a local user gain higher privileges","description":"Stack-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.","summary":"NVD (CVSS 7.8, local, low privileges, no user interaction) lists a stack-based buffer overflow in Windows Installer that lets an authorized local attacker elevate privileges. No Microsoft page with affected builds, KB or fix could be read; no exploitation or public PoC found.","severity":"high","cvss":7.8,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["infrastructure","local-privilege-escalation","windows","windows-installer"],"not_affected_if":["no-local-untrusted-users"],"how_to_check":"Unknown until Microsoft lists affected builds. Meanwhile, check the Windows build (winver) and installed updates against the MSRC Security Update Guide entry for CVE-2026-96152.","fix":null,"status":"open","published_at":"2026-11-10T19:22:12+00:00","first_seen_at":"2026-11-10T19:25:31+00:00","triaged_at":"2026-11-10T19:36:25+00:00","updated_at":"2026-11-10T19:45:19+00:00","category":"infrastructure","confidence":0.4,"triage":{"at":"2026-11-10T19:36:25Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Windows Installer: stack overflow lets a local user gain higher privileges","impact":"high","summary":"A stack-based buffer overflow in Windows Installer lets an attacker who already has a local account raise their privileges. The sources do not say which Windows versions are affected or how the overflow is triggered.","audience":"everyone","category":"infrastructure","nicknames":[],"who_cares":["windows","windows-installer"],"confidence":0.5,"fix_status":"unknown","needs_auth":"yes","worst_case":"local user gains SYSTEM-level privileges on the machine","analyst_note":"Check the NVD entry and Microsoft's security update guide for affected Windows builds and the patch KB, since the sources given state neither.","how_to_check":"unknown","plain_action":"Install the latest Windows updates from Settings > Windows Update, since Microsoft ships Windows Installer fixes through them.","product_name":"","needs_analyst":true,"not_affected_if":["no-local-untrusted-users"],"who_is_affected":"Anyone with a local user account on an affected Windows machine could raise their privileges; the sources do not name the Windows versions or the exact trigger. Systems where people share a machine or run untrusted local code are the ones most exposed. unknown for the rest.","user_interaction":"unknown","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.00069,"input_tokens":4488,"output_tokens":483,"severity_before":"high"},"analyst_status":"done","analyst_note":"Check the NVD entry and Microsoft's security update guide for affected Windows builds and the patch KB, since the sources given state neither.","search":"'-2026':13A,16A '-96152':14A,17A '7.8':29B 'affect':58B 'allow':80C 'attack':51B,83C 'author':49B,82C 'base':40B,74C 'buffer':41B,75C 'build':59B 'could':63B 'cve':12A,15A 'cvss':28B 'elev':52B,85C 'escal':22B 'exploit':67B 'fix':62B 'found':71B 'gain':9A 'higher':10A 'infrastructur':18B 'instal':2A,26B,45B,79C 'interact':35B 'kb':60B 'let':5A,47B 'list':36B 'local':7A,20B,30B,50B,87C 'local-privilege-escal':19B 'low':31B 'microsoft':55B 'nvd':27B 'overflow':4A,42B,76C 'page':56B 'poc':70B 'privileg':11A,21B,32B,53B,86C 'public':69B 'read':65B 'stack':3A,39B,73C 'stack-bas':38B,72C 'user':8A,34B 'window':1A,23B,25B,44B,78C 'windows-instal':24B","nicknames":[],"mitigations":[],"who_affected":"Anyone with a local user account on an affected Windows machine could raise their privileges; the sources do not name the Windows versions or the exact trigger. Systems where people share a machine or run untrusted local code are the ones most exposed. unknown for the rest.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"everyone","plain_action":"Install the latest Windows updates from Settings > Windows Update, since Microsoft ships Windows Installer fixes through them.","pkeys":[],"ptokens":[],"labels":["high","infrastructure","localprivilegeescalation","windows","windowsinstaller"],"campaign_type":null,"search_a":"'-2026':13A,16A '-96152':14A,17A 'cve':12A,15A 'gain':9A 'higher':10A 'instal':2A 'let':5A 'local':7A 'overflow':4A 'privileg':11A 'stack':3A 'user':8A 'window':1A","search_b":"'7.8':29B 'affect':58B 'attack':51B 'author':49B 'base':40B 'buffer':41B 'build':59B 'could':63B 'cvss':28B 'elev':52B 'escal':22B 'exploit':67B 'fix':62B 'found':71B 'infrastructur':18B 'instal':26B,45B 'interact':35B 'kb':60B 'let':47B 'list':36B 'local':20B,30B,50B 'local-privilege-escal':19B 'low':31B 'microsoft':55B 'nvd':27B 'overflow':42B 'page':56B 'poc':70B 'privileg':21B,32B,53B 'public':69B 'read':65B 'stack':39B 'stack-bas':38B 'user':34B 'window':23B,25B,44B 'windows-instal':24B","search_c":"'allow':80C 'attack':83C 'author':82C 'base':74C 'buffer':75C 'elev':85C 'instal':79C 'local':87C 'overflow':76C 'privileg':86C 'stack':73C 'stack-bas':72C 'window':78C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:22:12+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvss_by":"secure@microsoft.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-96152","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-96152","severity":null,"published_at":"2026-11-10T19:22:12+00:00","modified_at":"2026-11-10T19:22:12+00:00","first_seen_at":"2026-11-10T19:25:31+00:00","fetched_at":"2026-11-10T19:25:31+00:00","note":null},{"source":"analyst","external_id":"CVE-2026-96152:2545","url":null,"severity":null,"published_at":"2026-11-10T19:45:19+00:00","modified_at":"2026-11-10T19:45:19+00:00","first_seen_at":"2026-11-10T19:45:19+00:00","fetched_at":"2026-11-10T19:45:19+00:00","note":"Could not read primary source: MSRC advisory page returned nothing (JS-only), NVD page text empty. Affected builds, KB and fix remain unknown; nothing verified. Revisit when MSRC/Patch Tuesday lists it (check Nov 2026 Patch Tuesday)."}],"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"}