CVE-2026-4018
TOCTOU race condition in the QNX Neutrino kernel impacts versions of the QNX Software Development Platform and QNX OS for Safety
CVSS Score
6.4
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-367 |
| Vendor | blackberry ltd |
| Product | qnx software development platform |
| Published | Jul 14, 2026 |
| Last Updated | Jul 15, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H Attack Vector
Local
Attack Complexity
High
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
BlackBerry Ltd / QNX Software Development Platform
7.1 cpe:2.3:a:blackberry:qnx_software_development_platform:7.1:*:*:*:*:*:*:* 7.0 cpe:2.3:a:blackberry:qnx_software_development_platform:7.0:*:*:*:*:*:*:*
BlackBerry Ltd / QNX OS for Safety
2.2.8 and earlier cpe:2.3:o:blackberry:qnx_os_for_safety:2.2:8:*:*:*:*:*:* 2.1.5 and earlier cpe:2.3:o:blackberry:qnx_os_for_safety:2.1:5:*:*:*:*:*:* 2.0.3 and earlier cpe:2.3:o:blackberry:qnx_os_for_safety:2.0:3:*:*:*:*:*:*
BlackBerry Ltd. / QNX OS for Medical
2.0.2 and earlier cpe:2.3:o:blackberry:qnx_os_for_medical:2.0:2:*:*:*:*:*:*