Vulnerability-Lookup

GHSA-235Q-27Q4-67JX

Vulnerability from github – Published: 2025-07-10 21:31 – Updated: 2025-07-10 21:31

Details

Honeywell recommends updating to the most recent version of

Honeywell Experion PKS: 520.2 TCU9 HF1and 530.1 TCU3 HF1. The affected Experion PKS products are

C300 PCNT02, EHB, EHPM, ELMM, Classic ENIM, ETN, FIM4, FIM8, PGM, and RFIM. The Experion PKS versions affected are from 520.1 through 520.2 TCU9 and from 530 through 530 TCU3.

Severity

7.5 (High)


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

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2025-2520"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-457"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-07-10T20:15:24Z",
    "severity": "HIGH"
  },
  "details": "The Honeywell Experion PKS contains an Uninitialized Variable in the common Epic Platform Analyzer (EPA) communications. An attacker could potentially exploit this vulnerability, leading to a Communication Channel Manipulation, which results in a dereferencing of an uninitialized pointer leading to a denial of service.\n\n\n\nHoneywell recommends updating to the most recent version of \n\nHoneywell Experion PKS: 520.2 TCU9 HF1and\u00a0530.1 TCU3 HF1.\u00a0The affected Experion PKS products are \n\nC300 PCNT02, EHB, EHPM, ELMM, Classic ENIM, ETN, FIM4, FIM8, PGM, and RFIM.  The Experion PKS versions affected are\u00a0from 520.1 through 520.2 TCU9 and from 530 through 530 TCU3.",
  "id": "GHSA-235q-27q4-67jx",
  "modified": "2025-07-10T21:31:53Z",
  "published": "2025-07-10T21:31:53Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-2520"
    },
    {
      "type": "WEB",
      "url": "https://process.honeywell.com"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-2520 (GCVE-0-2025-2520)

Vulnerability from cvelistv5 – Published: 2025-07-10 19:54 – Updated: 2025-08-04 19:44

Title

Dereferencing of an uninitialized pointer leads to denial of service.

Summary

The Honeywell Experion PKS contains an Uninitialized Variable in the common Epic Platform Analyzer (EPA) communications. An attacker could potentially exploit this vulnerability, leading to a Communication Channel Manipulation, which results in a dereferencing of an uninitialized pointer leading to a denial of service. Honeywell recommends updating to the most recent version of Honeywell Experion PKS: 520.2 TCU9 HF1and 530.1 TCU3 HF1. The affected Experion PKS products are C300 PCNT02, EHB, EHPM, ELMM, Classic ENIM, ETN, FIM4, FIM8, PGM, and RFIM. The Experion PKS versions affected are from 520.1 through 520.2 TCU9 and from 530 through 530 TCU3.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-07-10 20:33 UTC

CWE

CWE-457 - Use of Uninitialized Variable

Assigner

Honeywell icscert root

References

1 reference

URL	Tags
https://process.honeywell.com/

Impacted products

10 products

Vendor	Product	Version
Honeywell	C300 PCNT02	Affected: 520.1 , ≤ 520.2 TCU9 (semver) Affected: 530 , ≤ 530 TCU3 (semver)
Honeywell	EHB	Affected: 520.1 , ≤ 520.2 TCU9 (semver) Affected: 530 , ≤ 530 TCU3 (semver)
Honeywell	EHPM	Affected: 520.1 , ≤ 520.2 TCU9 (semver) Affected: 530 , ≤ 530 TCU3 (semver)
Honeywell	ELMM	Affected: 520.1 , ≤ 520.2 TCU9 (semver) Affected: 530 , ≤ 530 TCU3 (semver)
Honeywell	Classic ENIM	Affected: 520.1 , ≤ 520.2 TCU9 (semver) Affected: 530 , ≤ 530 TCU3 (semver)
Honeywell	ETN	Affected: 520.1 , ≤ 520.2 TCU9 (semver) Affected: 530 , ≤ 530 TCU3 (semver)
Honeywell	FIM4	Affected: 520.1 , ≤ 520.2 TCU9 (semver) Affected: 530 , ≤ 530 TCU3 (semver)
Honeywell	FIM8	Affected: 520.1 , ≤ 520.2 TCU9 (semver) Affected: 530 , ≤ 530 TCU3 (semver)
Honeywell	PGM	Affected: 520.1 , ≤ 520.2 TCU9 (semver) Affected: 530 , ≤ 530 TCU3 (semver)
Honeywell	RFIM	Affected: 520.1 , ≤ 520.2 TCU9 (semver) Affected: 530 , ≤ 530 TCU3 (semver)

Credits

Demid Uzenkov and Kirill Kutaev (Positive Technologies)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-2520",
                "options": [
                  {
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                  },
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                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-07-10T20:33:19.670618Z",
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          "dateUpdated": "2025-07-10T20:33:30.482Z",
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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

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