{"id":"CVE-2026-4018","aliases":["EUVD-2026-44321","GHSA-vm3p-4vxh-gffg"],"status":"published","title":"TOCTOU race condition in the QNX Neutrino kernel impacts versions of the QNX Software Development Platform and QNX OS for Safety","description":"TOCTOU Race Condition in specific trace commands of the TraceEvent() system call could allow an attacker with local access and with the PROCMGR_AID_TRACE ability, to cause information disclosure, data tampering or a crash of the QNX Neutrino kernel.","severity":{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00102,"percentile":0.0095,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-367"],"published":"2026-07-14T17:34:01Z","modified":"2026-07-15T16:24:31Z","products":[{"vendor":"blackberry ltd","product":"qnx os for safety"},{"vendor":"blackberry ltd","product":"qnx software development platform"},{"vendor":"blackberry ltd.","product":"qnx os for medical"}],"references":[{"url":"https://support.blackberry.com/pkb/s/article/141213"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4018"},{"url":"https://github.com/advisories/GHSA-vm3p-4vxh-gffg"}],"sources":{"cve":[{"id":"CVE-2026-4018","title":"TOCTOU race condition in the QNX Neutrino kernel impacts versions of the QNX Software Development Platform and QNX OS for Safety","description":"TOCTOU Race Condition in specific trace commands of the TraceEvent() system call could allow an attacker with local access and with the PROCMGR_AID_TRACE ability, to cause information disclosure, data tampering or a crash of the QNX Neutrino kernel.","status":"published","published":"2026-07-14T17:34:01.952Z","modified":"2026-07-15T14:01:13.318Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-367"],"updated_at":"2026-11-02T14:19:59.369956Z"}],"euvd":[{"id":"EUVD-2026-44321","description":"TOCTOU Race Condition in specific trace commands of the TraceEvent() system call could allow an attacker with local access and with the PROCMGR_AID_TRACE ability, to cause information disclosure, data tampering or a crash of the QNX Neutrino kernel.","status":"published","published":"2026-07-14T17:34:01Z","modified":"2026-07-15T14:01:13Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium"}],"updated_at":"2026-11-02T18:19:53.226345Z"}],"ghsa":[{"id":"GHSA-vm3p-4vxh-gffg","title":"TOCTOU Race Condition in specific trace commands of the TraceEvent() system call could allow an...","description":"TOCTOU Race Condition in specific trace commands of the TraceEvent() system call could allow an attacker with local access and with the PROCMGR_AID_TRACE ability, to cause information disclosure, data tampering or a crash of the QNX Neutrino kernel.","status":"published","published":"2026-07-14T18:32:14Z","modified":"2026-07-14T18:32:22Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium"}],"cwes":["CWE-367"],"updated_at":"2026-11-02T15:09:28.885137Z"}],"nvd":[{"id":"CVE-2026-4018","description":"TOCTOU Race Condition in specific trace commands of the TraceEvent() system call could allow an attacker with local access and with the PROCMGR_AID_TRACE ability, to cause information disclosure, data tampering or a crash of the QNX Neutrino kernel.","status":"published","published":"2026-07-14T18:17:26.943Z","modified":"2026-07-15T16:24:31.14Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-367"],"updated_at":"2026-11-02T14:12:29.489525Z"}]}}