CVE-2026-4018 - Vulnerability Details - OpenCVE

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.

No CVSS v4.0

Attack Vector Local

Attack Complexity High

Privileges Required High

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact total

Vendors	Products
Blackberry	Qnx Os For Medical Qnx Os For Safety Qnx Software Development Platform

No data.

No data.

References

Link	Providers
https://support.blackberry.com/pkb/s/article/141213

History

Wed, 15 Jul 2026 14:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Tue, 14 Jul 2026 19:00:00 +0000

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

Tue, 14 Jul 2026 17:45:00 +0000

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		https://support.blackberry.com/pkb/s/article/141213
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'}`

MITRE

Status: PUBLISHED

Assigner: blackberry

Published: 2026-07-14T17:34:01.952Z

Updated: 2026-07-15T14:01:13.318Z

Reserved: 2026-03-11T19:24:46.531Z

Link: CVE-2026-4018

Vulnrichment

Updated: 2026-07-15T14:01:09.643Z

NVD

No data.

Redhat

No data.

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-4018", "assignerOrgId": "dbe78b00-5e7b-4fda-8748-329789ecfc5c", "state": "PUBLISHED", "assignerShortName": "blackberry", "dateReserved": "2026-03-11T19:24:46.531Z", "datePublished": "2026-07-14T17:34:01.952Z", "dateUpdated": "2026-07-15T14:01:13.318Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "dbe78b00-5e7b-4fda-8748-329789ecfc5c", "shortName": "blackberry", "dateUpdated": "2026-07-14T17:34:01.952Z"}, "title": "TOCTOU race condition in the QNX Neutrino kernel impacts versions of the QNX Software Development Platform and QNX OS for Safety", "datePublic": "2026-07-14T15:20:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-367", "description": "CWE-367 Time-of-check time-of-use (TOCTOU) race condition", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-29", "descriptions": [{"lang": "en", "value": "CAPEC-29 Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions"}]}], "affected": [{"vendor": "BlackBerry Ltd", "product": "QNX Software Development Platform", "versions": [{"status": "affected", "version": "7.1"}, {"status": "affected", "version": "cpe:2.3:a:blackberry:qnx_software_development_platform:7.1:*:*:*:*:*:*:*", "versionType": "cpe"}, {"status": "affected", "version": "7.0"}, {"status": "affected", "version": "cpe:2.3:a:blackberry:qnx_software_development_platform:7.0:*:*:*:*:*:*:*", "versionType": "cpe"}], "defaultStatus": "unaffected"}, {"vendor": "BlackBerry Ltd", "product": "QNX OS for Safety", "versions": [{"status": "affected", "version": "2.2.8 and earlier"}, {"status": "affected", "version": "cpe:2.3:o:blackberry:qnx_os_for_safety:2.2:8:*:*:*:*:*:*", "versionType": "cpe"}, {"status": "affected", "version": "2.1.5 and earlier"}, {"status": "affected", "version": "cpe:2.3:o:blackberry:qnx_os_for_safety:2.1:5:*:*:*:*:*:*", "versionType": "cpe"}, {"status": "affected", "version": "2.0.3 and earlier"}, {"status": "affected", "version": "cpe:2.3:o:blackberry:qnx_os_for_safety:2.0:3:*:*:*:*:*:*", "versionType": "cpe"}], "defaultStatus": "unaffected"}, {"vendor": "BlackBerry Ltd.", "product": "QNX OS for Medical", "versions": [{"status": "affected", "version": "2.0.2 and earlier"}, {"status": "affected", "version": "cpe:2.3:o:blackberry:qnx_os_for_medical:2.0:2:*:*:*:*:*:*", "versionType": "cpe"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "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.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "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."}]}], "references": [{"url": "https://support.blackberry.com/pkb/s/article/141213"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "LOCAL", "attackComplexity": "HIGH", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseSeverity": "MEDIUM", "baseScore": 6.4, "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H"}}], "source": {"advisory": "https://support.blackberry.com/pkb/s/article/141213", "discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.2"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-07-15T14:00:49.532095Z", "id": "CVE-2026-4018", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-15T14:01:13.318Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-4018", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-07-15T14:00:49.532095Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-15T14:01:09.643Z"}}], "cna": {"title": "TOCTOU race condition in the QNX Neutrino kernel impacts versions of the QNX Software Development Platform and QNX OS for Safety", "source": {"advisory": "https://support.blackberry.com/pkb/s/article/141213", "discovery": "UNKNOWN"}, "impacts": [{"capecId": "CAPEC-29", "descriptions": [{"lang": "en", "value": "CAPEC-29 Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions"}]}], "metrics": [{"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.4, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "HIGH"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "BlackBerry Ltd", "product": "QNX Software Development Platform", "versions": [{"status": "affected", "version": "7.1"}, {"status": "affected", "version": "cpe:2.3:a:blackberry:qnx_software_development_platform:7.1:*:*:*:*:*:*:*", "versionType": "cpe"}, {"status": "affected", "version": "7.0"}, {"status": "affected", "version": "cpe:2.3:a:blackberry:qnx_software_development_platform:7.0:*:*:*:*:*:*:*", "versionType": "cpe"}], "defaultStatus": "unaffected"}, {"vendor": "BlackBerry Ltd", "product": "QNX OS for Safety", "versions": [{"status": "affected", "version": "2.2.8 and earlier"}, {"status": "affected", "version": "cpe:2.3:o:blackberry:qnx_os_for_safety:2.2:8:*:*:*:*:*:*", "versionType": "cpe"}, {"status": "affected", "version": "2.1.5 and earlier"}, {"status": "affected", "version": "cpe:2.3:o:blackberry:qnx_os_for_safety:2.1:5:*:*:*:*:*:*", "versionType": "cpe"}, {"status": "affected", "version": "2.0.3 and earlier"}, {"status": "affected", "version": "cpe:2.3:o:blackberry:qnx_os_for_safety:2.0:3:*:*:*:*:*:*", "versionType": "cpe"}], "defaultStatus": "unaffected"}, {"vendor": "BlackBerry Ltd.", "product": "QNX OS for Medical", "versions": [{"status": "affected", "version": "2.0.2 and earlier"}, {"status": "affected", "version": "cpe:2.3:o:blackberry:qnx_os_for_medical:2.0:2:*:*:*:*:*:*", "versionType": "cpe"}], "defaultStatus": "unaffected"}], "datePublic": "2026-07-14T15:20:00.000Z", "references": [{"url": "https://support.blackberry.com/pkb/s/article/141213"}], "x_generator": {"engine": "Vulnogram 1.0.2"}, "descriptions": [{"lang": "en", "value": "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.", "supportingMedia": [{"type": "text/html", "value": "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.", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-367", "description": "CWE-367 Time-of-check time-of-use (TOCTOU) race condition"}]}], "providerMetadata": {"orgId": "dbe78b00-5e7b-4fda-8748-329789ecfc5c", "shortName": "blackberry", "dateUpdated": "2026-07-14T17:34:01.952Z"}}}, "cveMetadata": {"cveId": "CVE-2026-4018", "state": "PUBLISHED", "dateUpdated": "2026-07-15T14:01:13.318Z", "dateReserved": "2026-03-11T19:24:46.531Z", "assignerOrgId": "dbe78b00-5e7b-4fda-8748-329789ecfc5c", "datePublished": "2026-07-14T17:34:01.952Z", "assignerShortName": "blackberry"}, "dataVersion": "5.2"}