CVE-2026-4018 (GCVE-0-2026-4018)

Vulnerability from cvelistv5 – Published: 2026-07-14 17:34 – Updated: 2026-07-15 14:01
VLAI
Title
TOCTOU race condition in the QNX Neutrino kernel impacts versions of the QNX Software Development Platform and QNX OS for Safety
Summary
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
6.4 (Medium)
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-367 - Time-of-check time-of-use (TOCTOU) race condition
Assigner
References
Impacted products
Vendor Product Version
BlackBerry Ltd QNX Software Development Platform Affected: 7.1
Affected: cpe:2.3:a:blackberry:qnx_software_development_platform:7.1:*:*:*:*:*:*:* (cpe)
Affected: 7.0
Affected: cpe:2.3:a:blackberry:qnx_software_development_platform:7.0:*:*:*:*:*:*:* (cpe)
Create a notification for this product.
BlackBerry Ltd QNX OS for Safety Affected: 2.2.8 and earlier
Affected: cpe:2.3:o:blackberry:qnx_os_for_safety:2.2:8:*:*:*:*:*:* (cpe)
Affected: 2.1.5 and earlier
Affected: cpe:2.3:o:blackberry:qnx_os_for_safety:2.1:5:*:*:*:*:*:* (cpe)
Affected: 2.0.3 and earlier
Affected: cpe:2.3:o:blackberry:qnx_os_for_safety:2.0:3:*:*:*:*:*:* (cpe)
Create a notification for this product.
BlackBerry Ltd. QNX OS for Medical Affected: 2.0.2 and earlier
Affected: cpe:2.3:o:blackberry:qnx_os_for_medical:2.0:2:*:*:*:*:*:* (cpe)
Create a notification for this product.
Date Public
2026-07-14 15:20
Show details on NVD website
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.