Vulnerability-Lookup

CVE-2026-4017 (GCVE-0-2026-4017)

Vulnerability from cvelistv5 – Published: 2026-07-14 17:25 – Updated: 2026-07-14 23:36

Title

Buffer overflow in the QNX Neutrino kernel impacts versions of the QNX Software Development Platform and QNX OS for Safety

Summary

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.

Severity

7.4 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-14 23:36 UTC

CWE

CWE-121 - Stack-based buffer overflow

Assigner

blackberry CNA under the mitre root

CNA scorecard – unranked: 7 records in the last 180 days, 10 needed details

References

1 reference

URL	Tags
https://support.blackberry.com/pkb/s/article/141213

Impacted products

3 products

Vendor	Product	Version	CPE status
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)	guessed
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)	guessed
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)	guessed

Date Public

2026-07-14 15:15

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-4017

Vulnerability from fkie_nvd - Published: 2026-07-14 18:17 - Updated: 2026-07-15 16:24

Severity

7.4 (High) - CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

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.

References

	URL	Tags
	secure@blackberry.com	https://support.blackberry.com/pkb/s/article/141213

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-4017",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-07-14T23:36:16.979515Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-07-14T18:17:26.820",
  "references": [
    {
      "source": "secure@blackberry.com",
      "url": "https://support.blackberry.com/pkb/s/article/141213"
    }
  ],
  "sourceIdentifier": "secure@blackberry.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-121"
        }
      ],
      "source": "secure@blackberry.com",
      "type": "Secondary"
    }
  ]
}

GHSA-8422-84VM-VCR2

Vulnerability from github – Published: 2026-07-14 18:32 – Updated: 2026-07-14 18:32

Details

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.

Severity

7.4 (High)


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

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2026-4017"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-121"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-14T18:17:26Z",
    "severity": "HIGH"
  },
  "details": "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.",
  "id": "GHSA-8422-84vm-vcr2",
  "modified": "2026-07-14T18:32:14Z",
  "published": "2026-07-14T18:32:14Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4017"
    },
    {
      "type": "WEB",
      "url": "https://support.blackberry.com/pkb/s/article/141213"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-4017 (GCVE-0-2026-4017)

FKIE_CVE-2026-4017

GHSA-8422-84VM-VCR2

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Vulnerability timeline

Related by attack behaviour