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Back to active CVEs
High · CVSS 7.4CVE-2026-4017

Buffer overflow in the QNX Neutrino kernel impacts versions of the QNX Software Development Platform and QNX OS for SafetyCVE-2026-4017

Answer in brief

CVE-2026-4017 records a High severity (CVSS 7.4) vulnerability in Buffer overflow in the QNX Neutrino kernel impacts versions of the QNX Software Development Platform and QNX OS for Safety. The current sources do not mark it as known exploited. The current feed maps BlackBerry Ltd./QNX OS for Medical (generic), BlackBerry Ltd/QNX OS for Safety (generic), BlackBerry Ltd/QNX Software Development Platform (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jul 14, 2026Updated Jul 15, 2026Source checked Nov 3, 2026First seen by HOL Jul 15, 2026Material review Jul 15, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.4
Exploitation
Not marked as known exploited
Affected software
3 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 7.4. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps BlackBerry Ltd./QNX OS for Medical (generic), BlackBerry Ltd/QNX OS for Safety (generic), BlackBerry Ltd/QNX Software Development Platform (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
BlackBerry Ltd./QNX OS for Medicalgeneric2.0.2 and earlier || cpe:2.3:o:blackberry:qnx_os_for_medical:2.0:2:*:*:*:*:*:*Not reported
BlackBerry Ltd/QNX OS for Safetygeneric2.2.8 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:*:*:*:*:*:*Not reported
BlackBerry Ltd/QNX Software Development Platformgeneric7.1 || cpe:2.3:a:blackberry:qnx_software_development_platform:7.1:*:*:*:*:*:*:* || 7.0 || cpe:2.3:a:blackberry:qnx_software_development_platform:7.0:*:*:*:*:*:*:*Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for BlackBerry Ltd./QNX OS for Medical, BlackBerry Ltd/QNX OS for Safety, BlackBerry Ltd/QNX Software Development Platform.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Jul 14, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Jul 15, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Jul 15, 2026

Sources and claim methodology

  • Source referencesupport.blackberry.com
Upstream source description

Buffer Overflow in the entry handler of the TraceEvent() system call could allow an attacker with local access to cause information disclosure, data tampering or a crash of the QNX Neutrino kernel.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Buffer Overflow
EPSS
Not reported
CWE IDs
CWE-121
Source
CVE List V5
Source checked
Nov 3, 2026
References
1 linked source
Open source record