{"id":"CVE-2026-40273","kind":"vulnerability","aliases":["CVE-2026-40273"],"related":[],"title":"QNX Neutrino kernel: crafted local message leaks information from procnto","description":"Improper Input Validation in a procnto message handler could allow an attacker with local access to send a crafted message which can cause an information disclosure in the QNX Neutrino kernel","summary":"A flaw in the procnto message handler of the QNX Neutrino kernel lets a local attacker send a crafted message that causes information disclosure. The sources describe only information disclosure, not code execution or takeover.","severity":"medium","cvss":4.0,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["embedded","infrastructure","neutrino","qnx","runtime"],"not_affected_if":["no-local-access"],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:21:15+00:00","first_seen_at":"2026-11-10T19:25:15+00:00","triaged_at":"2026-11-10T20:04:33+00:00","updated_at":"2026-11-10T20:04:33+00:00","category":"runtime","confidence":0.6,"triage":{"at":"2026-11-10T20:04:33Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"QNX Neutrino kernel: crafted local message leaks information from procnto","impact":"low","summary":"A flaw in the procnto message handler of the QNX Neutrino kernel lets a local attacker send a crafted message that causes information disclosure. The sources describe only information disclosure, not code execution or takeover.","audience":"businesses","category":"runtime","nicknames":[],"who_cares":["qnx","neutrino","embedded","infrastructure"],"confidence":0.6,"fix_status":"unknown","needs_auth":"unknown","worst_case":"Kernel memory contents leak to a local attacker","analyst_note":"Find the affected and fixed QNX Neutrino versions and the vendor advisory in the NVD entry or QNX security bulletins.","how_to_check":"- unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["no-local-access"],"who_is_affected":"Systems running the QNX Neutrino real-time operating system where an attacker already has local access to the machine. The sources do not list affected versions or configurations.","user_interaction":"no","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.00066,"input_tokens":4505,"output_tokens":418,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-2026':12A,15A '-40273':13A,16A 'access':71C 'allow':66C 'attack':37B,68C 'caus':43B,79C 'code':53B 'could':65C 'craft':4A,40B,75C 'cve':11A,14A 'describ':48B 'disclosur':45B,51B,82C 'embed':17B 'execut':54B 'flaw':23B 'handler':28B,64C 'improp':57C 'inform':8A,44B,50B,81C 'infrastructur':18B 'input':58C 'kernel':3A,33B,87C 'leak':7A 'let':34B 'local':5A,36B,70C 'messag':6A,27B,41B,63C,76C 'neutrino':2A,19B,32B,86C 'procnto':10A,26B,62C 'qnx':1A,20B,31B,85C 'runtim':21B 'send':38B,73C 'sourc':47B 'takeov':56B 'valid':59C","nicknames":[],"mitigations":[],"who_affected":"Systems running the QNX Neutrino real-time operating system where an attacker already has local access to the machine. The sources do not list affected versions or configurations.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["embedded","infrastructure","medium","neutrino","qnx","runtime"],"campaign_type":null,"search_a":"'-2026':12A,15A '-40273':13A,16A 'craft':4A 'cve':11A,14A 'inform':8A 'kernel':3A 'leak':7A 'local':5A 'messag':6A 'neutrino':2A 'procnto':10A 'qnx':1A","search_b":"'attack':37B 'caus':43B 'code':53B 'craft':40B 'describ':48B 'disclosur':45B,51B 'embed':17B 'execut':54B 'flaw':23B 'handler':28B 'inform':44B,50B 'infrastructur':18B 'kernel':33B 'let':34B 'local':36B 'messag':27B,41B 'neutrino':19B,32B 'procnto':26B 'qnx':20B,31B 'runtim':21B 'send':38B 'sourc':47B 'takeov':56B","search_c":"'access':71C 'allow':66C 'attack':68C 'caus':79C 'could':65C 'craft':75C 'disclosur':82C 'handler':64C 'improp':57C 'inform':81C 'input':58C 'kernel':87C 'local':70C 'messag':63C,76C 'neutrino':86C 'procnto':62C 'qnx':85C 'send':73C 'valid':59C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:21:15+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","cvss_by":"secure@blackberry.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-40273","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40273","severity":null,"published_at":"2026-11-10T19:21:15+00:00","modified_at":"2026-11-10T19:21:15+00:00","first_seen_at":"2026-11-10T19:25:15+00:00","fetched_at":"2026-11-10T19:25:15+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"}