CVE-2026-4017

Kernel data disclosure, tampering, or crash via TraceEvent

Published Jul 14, 2026 · Updated Jul 14, 2026

Stack overflow in affected BlackBerry QNX Neutrino products allows local users to disclose or alter kernel data or crash the kernel. The overflow occurs in the TraceEvent() system-call entry handler, but BlackBerry has not disclosed the unchecked operation or input. Exploitation requires local access and high-complexity conditions; success compromises kernel data or interrupts the system through a kernel crash.

CVSS severity7.4
High
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack overflow in affected BlackBerry QNX Neutrino products allows local users to disclose or alter kernel data or crash the kernel. The overflow occurs in the TraceEvent() system-call entry handler, but BlackBerry has not disclosed the unchecked operation or input. Exploitation requires local access and high-complexity conditions; success compromises kernel data or interrupts the system through a kernel crash.

The record

CVE
CVE-2026-4017
Published
Jul 14, 2026
Updated
Jul 14, 2026
Vendor
BlackBerry
Product
QNX Software Development Platform
Classifications
CWE-121, CAPEC-100
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=7.0
  2. Affected versionversion=7.1
  3. Affected versionversion=cpe:2.3:a:blackberry:qnx_software_development_platform:7.0:*:*:*:*:*:*:*
  4. Affected versionversion=cpe:2.3:a:blackberry:qnx_software_development_platform:7.1:*:*:*:*:*:*:*

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

BlackBerry · QNX Software Development Platformversion=7.0; version=7.1; version=cpe:2.3:a:blackberry:qnx_software_development_platform:7.0:*:*:*:*:*:*:*; version=cpe:2.3:a:blackberry:qnx_software_development_platform:7.1:*:*:*:*:*:*:*
BlackBerry · QNX OS for Safetyversion=2.0.3 and earlier; version=2.1.5 and earlier; version=2.2.8 and earlier; version=cpe:2.3:o:blackberry:qnx_os_for_safety:2.0:3:*:*:*:*:*:*; version=cpe:2.3:o:blackberry:qnx_os_for_safety:2.1:5:*:*:*:*:*:*; version=cpe:2.3:o:blackberry:qnx_os_for_safety:2.2:8:*:*:*:*:*:*
BlackBerry · QNX OS for Medicalversion=2.0.2 and earlier; version=cpe:2.3:o:blackberry:qnx_os_for_medical:2.0:2:*:*:*:*:*:*

Published CVSS scores

7.4BlackBerryCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
CAPEC-100Overflow Buffers

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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