CVE-2026-4018

TOCTOU race condition in the QNX Neutrino kernel impacts versions of the QNX Software Development Platform and QNX OS for Safety

Published Jul 14, 2026 CVSS 3.1 · 6.4 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Blackberry
Blackberry qnx Os For Medical
Blackberry qnx Os For Safety
Blackberry qnx Software Development Platform
Vendors & Products Blackberry
Blackberry qnx Os For Medical
Blackberry qnx Os For Safety
Blackberry qnx Software Development Platform
Type Values Removed Values Added
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.
Title TOCTOU race condition in the QNX Neutrino kernel impacts versions of the QNX Software Development Platform and QNX OS for Safety
Weaknesses CWE-367
References
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
blackberry
Published
Updated
Jul 15, 2026, 2:01 PM
Reserved
Mar 11, 2026, 7:24 PM
Status
Deferred
Published
Jul 14, 2026, 6:17 PM
Modified
Jul 15, 2026, 4:24 PM