Vulnerability-Lookup

CVE-2026-5434 (GCVE-0-2026-5434)

Vulnerability from cvelistv5 – Published: 2026-05-21 08:38 – Updated: 2026-07-30 16:51

Title

Improper storage of sensitive information

Summary

Honeywell Control Network Module (CNM) contains insertion of sensitive information into an unintended directory. An attacker could exploit this vulnerability through probing system files, potentially resulting in unintended access to protected data. Honeywell recommends updating to the most recent version of this product, service or offering [200.1]. The CNM versions affected are from [100.1, 101.1, 110.1, and 110.2].

Severity

5.9 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-21 12:06 UTC

CWE

CWE-538 - Insertion of Sensitive Information into Externally-Accessible File or Directory

Assigner

Honeywell

References

1 reference

URL	Tags
https://www.honeywell.com/us/en/product-security

Impacted products

1 product

Vendor	Product	Version
Honeywell International Inc.	Control Network Module (CNM)	Affected: 100.1 , ≤ 110.2 (cpe)

Credits

Andreas Krämer, BASF Digital Solutions GmbH Martin Floeck, BASF Digital Solutions GmbH Stefan Stahl, BASF Digital Solutions GmbH

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-5434

Vulnerability from fkie_nvd - Published: 2026-05-21 09:16 - Updated: 2026-06-02 14:17

Severity

Summary

Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.

References

	URL	Tags

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority."
    }
  ],
  "id": "CVE-2026-5434",
  "lastModified": "2026-06-02T14:17:05.110",
  "metrics": {},
  "published": "2026-05-21T09:16:30.410",
  "references": [],
  "sourceIdentifier": "psirt@honeywell.com",
  "vulnStatus": "Rejected"
}

GHSA-M6F8-6M3M-X2RV

Vulnerability from github – Published: 2026-05-21 09:32 – Updated: 2026-07-27 15:32

Details

Severity

5.9 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-5434"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-538"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-21T09:16:30Z",
    "severity": "MODERATE"
  },
  "details": "Honeywell Control\nNetwork Module (CNM)\u00a0contains\ninsertion of sensitive information into an unintended directory. An attacker could exploit this vulnerability through probing\nsystem files, potentially resulting in unintended\naccess to protected data.",
  "id": "GHSA-m6f8-6m3m-x2rv",
  "modified": "2026-07-27T15:32:12Z",
  "published": "2026-05-21T09:32:12Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5434"
    },
    {
      "type": "WEB",
      "url": "https://process.honeywell.com"
    },
    {
      "type": "WEB",
      "url": "https://www.honeywell.com/us/en/product-security"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "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.

Detection rules are retrieved from Rulezet.

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.

Action not permitted

CVE-2026-5434 (GCVE-0-2026-5434)

FKIE_CVE-2026-5434

GHSA-M6F8-6M3M-X2RV

Tags

Sightings

Nomenclature