CVE-2026-4018 MEDIUM

CVE-2026-4018: TOCTOU race condition in the QNX Neutrino kernel impacts versions of the QNX Software Development Platform and QNX OS for Safety

Vendor Blackberry Ltd
Product QNX Software Development Platform
Weakness CWE-367
Published July 14, 2026
Last update July 14, 2026
View on NVD All CVEs

CVSS base score

6.4/10
Attack vector Local
Attack complexity High
Privileges required High
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

July 14, 2026 CVE published