Vulnerability-Lookup

BDU:2025-08555 (CVE-2025-2520)

Vulnerability from fstec – Published: 2025-07-16 – Updated: 2025-09-01 – View on bdu.fstec.ru Fixed

Title

Уязвимость компонента Epic Platform Analyzer (EPA) микропрограммного обеспечения программируемых логических контроллеров Honeywell Experion PKS, позволяющая нарушителю вызвать отказ в обслуживании

Summary

Уязвимость компонента Epic Platform Analyzer (EPA) микропрограммного обеспечения программируемых логических контроллеров Honeywell Experion PKS связана с использованием неинициализированной переменной. Эксплуатация уязвимости может позволить нарушителю, действующему удалённо, вызвать отказ в обслуживании

Severity

7.8 (High) CVSS 2.0


                      
                        AV:N/AC:L/Au:N/C:N/I:N/A:C

7.5 (High) CVSS 3.1


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

Class

Code vulnerability

Status

Confirmed by the vendor

Exploitation

Resource manipulation

Incidents

Being clarified

Remediation

Software update

CWE

CWE-457 - Использование неинициализированной переменной

Aliases

CVE-2025-2520

References

2 references

URL
https://vulners.com/redhatcve/RH:CVE-2025-2520
https://process.honeywell.com/

Impacted products

1 product from 1 vendor

Vendors

Honeywell International Inc.

Products

Experion PKS

Versions

от 520.1 до 520.2 TCU9 HF1 (Experion PKS), от 530.0 до 530.1 TCU3 HF1 (Experion PKS)

Product types

Средство АСУ ТП, ПО программно-аппаратного средства АСУ ТП

Platforms

Honeywell International Inc. - - C300 PCNT02, Honeywell International Inc. - - EHB, Honeywell International Inc. - - EHPM, Honeywell International Inc. - - ELMM, Honeywell International Inc. - - Classic ENIM, Honeywell International Inc. - - ETN, Honeywell International Inc. - - FIM4, Honeywell International Inc. - - FIM8, Honeywell International Inc. - - PGM, Honeywell International Inc. - - RFIM

Mitigations

Использование рекомендаций: https://process.honeywell.com/

Credits

Уязвимость выявлена исследователями: Демид Узеньков, Кирилл Кутаев (Positive Technologies)

JSON

To clipboard

{
  "CVSS 2.0": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
  "CVSS 3.0": "AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "CVSS 4.0": null,
  "remediation_\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": null,
  "remediation_\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435": null,
  "\u0412\u0435\u043d\u0434\u043e\u0440 \u041f\u041e": "Honeywell International Inc.",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "\u043e\u0442 520.1 \u0434\u043e 520.2 TCU9 HF1 (Experion PKS), \u043e\u0442 530.0 \u0434\u043e 530.1 TCU3 HF1 (Experion PKS)",
  "\u0412\u043e\u0437\u043c\u043e\u0436\u043d\u044b\u0435 \u043c\u0435\u0440\u044b \u043f\u043e \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044e": "\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439:\nhttps://process.honeywell.com/",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "10.07.2025",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "01.09.2025",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "16.07.2025",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2025-08555",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u044b \u0434\u0440\u0443\u0433\u0438\u0445 \u0441\u0438\u0441\u0442\u0435\u043c \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "CVE-2025-2520",
  "\u0418\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430",
  "\u041a\u043b\u0430\u0441\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043a\u043e\u0434\u0430",
  "\u041d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u041f\u041e": "Experion PKS",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u041e\u0421 \u0438 \u0442\u0438\u043f \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b": "Honeywell International Inc. - - C300 PCNT02, Honeywell International Inc. - - EHB, Honeywell International Inc. - - EHPM, Honeywell International Inc. - - ELMM, Honeywell International Inc. - - Classic ENIM, Honeywell International Inc. - - ETN, Honeywell International Inc. - - FIM4, Honeywell International Inc. - - FIM8, Honeywell International Inc. - - PGM, Honeywell International Inc. - - RFIM",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u0430 Epic Platform Analyzer (EPA) \u043c\u0438\u043a\u0440\u043e\u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0438\u0440\u0443\u0435\u043c\u044b\u0445 \u043b\u043e\u0433\u0438\u0447\u0435\u0441\u043a\u0438\u0445 \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u043b\u0435\u0440\u043e\u0432 Honeywell Experion PKS, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u0432\u044b\u0437\u0432\u0430\u0442\u044c \u043e\u0442\u043a\u0430\u0437 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438",
  "\u041d\u0430\u043b\u0438\u0447\u0438\u0435 \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u043d\u0435\u0438\u043d\u0438\u0446\u0438\u0430\u043b\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0439 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0439 (CWE-457)",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u0430 Epic Platform Analyzer (EPA) \u043c\u0438\u043a\u0440\u043e\u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0438\u0440\u0443\u0435\u043c\u044b\u0445 \u043b\u043e\u0433\u0438\u0447\u0435\u0441\u043a\u0438\u0445 \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u043b\u0435\u0440\u043e\u0432 Honeywell Experion PKS \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435\u043c \u043d\u0435\u0438\u043d\u0438\u0446\u0438\u0430\u043b\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0439 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0439. \u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0442\u044c \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e, \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u043c\u0443 \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e, \u0432\u044b\u0437\u0432\u0430\u0442\u044c \u043e\u0442\u043a\u0430\u0437 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438",
  "\u041f\u043e\u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": null,
  "\u041f\u0440\u043e\u0447\u0430\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u044f\u043c\u0438: \u0414\u0435\u043c\u0438\u0434 \u0423\u0437\u0435\u043d\u044c\u043a\u043e\u0432, \u041a\u0438\u0440\u0438\u043b\u043b \u041a\u0443\u0442\u0430\u0435\u0432 (Positive Technologies)",
  "\u0421\u0432\u044f\u0437\u044c \u0441 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u0430\u043c\u0438 \u0418\u0411": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u0421\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f": "\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438": "\u041c\u0430\u043d\u0438\u043f\u0443\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u0441\u0443\u0440\u0441\u0430\u043c\u0438",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://vulners.com/redhatcve/RH:CVE-2025-2520\nhttps://process.honeywell.com/",
  "\u0421\u0442\u0430\u0442\u0443\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u0435\u043c",
  "\u0422\u0438\u043f \u041f\u041e": "\u0421\u0440\u0435\u0434\u0441\u0442\u0432\u043e \u0410\u0421\u0423 \u0422\u041f, \u041f\u041e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e-\u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0433\u043e \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430 \u0410\u0421\u0423 \u0422\u041f",
  "\u0422\u0438\u043f \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "CWE-457",
  "\u0423\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0412\u044b\u0441\u043e\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 2.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 7,8)\n\u0412\u044b\u0441\u043e\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 3.1 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 7,5)"
}

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": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-07-10T20:33:19.670618Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-07-10T20:33:30.482Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Experion PKS"
          ],
          "product": "C300 PCNT02",
          "vendor": "Honeywell",
          "versions": [
            {
              "lessThanOrEqual": "520.2 TCU9",
              "status": "affected",
              "version": "520.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "530 TCU3",
              "status": "affected",
              "version": "530",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Experion PKS"
          ],
          "product": "EHB",
          "vendor": "Honeywell",
          "versions": [
            {
              "lessThanOrEqual": "520.2 TCU9",
              "status": "affected",
              "version": "520.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "530 TCU3",
              "status": "affected",
              "version": "530",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Experion PKS"
          ],
          "product": "EHPM",
          "vendor": "Honeywell",
          "versions": [
            {
              "lessThanOrEqual": "520.2 TCU9",
              "status": "affected",
              "version": "520.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "530 TCU3",
              "status": "affected",
              "version": "530",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Experion PKS"
          ],
          "product": "ELMM",
          "vendor": "Honeywell",
          "versions": [
            {
              "lessThanOrEqual": "520.2 TCU9",
              "status": "affected",
              "version": "520.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "530 TCU3",
              "status": "affected",
              "version": "530",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Experion PKS"
          ],
          "product": "Classic ENIM",
          "vendor": "Honeywell",
          "versions": [
            {
              "lessThanOrEqual": "520.2 TCU9",
              "status": "affected",
              "version": "520.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "530 TCU3",
              "status": "affected",
              "version": "530",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Experion PKS"
          ],
          "product": "ETN",
          "vendor": "Honeywell",
          "versions": [
            {
              "lessThanOrEqual": "520.2 TCU9",
              "status": "affected",
              "version": "520.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "530 TCU3",
              "status": "affected",
              "version": "530",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Experion PKS"
          ],
          "product": "FIM4",
          "vendor": "Honeywell",
          "versions": [
            {
              "lessThanOrEqual": "520.2 TCU9",
              "status": "affected",
              "version": "520.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "530 TCU3",
              "status": "affected",
              "version": "530",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Experion PKS"
          ],
          "product": "FIM8",
          "vendor": "Honeywell",
          "versions": [
            {
              "lessThanOrEqual": "520.2 TCU9",
              "status": "affected",
              "version": "520.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "530 TCU3",
              "status": "affected",
              "version": "530",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Experion PKS"
          ],
          "product": "PGM",
          "vendor": "Honeywell",
          "versions": [
            {
              "lessThanOrEqual": "520.2 TCU9",
              "status": "affected",
              "version": "520.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "530 TCU3",
              "status": "affected",
              "version": "530",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Experion PKS"
          ],
          "product": "RFIM",
          "vendor": "Honeywell",
          "versions": [
            {
              "lessThanOrEqual": "520.2 TCU9",
              "status": "affected",
              "version": "520.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "530 TCU3",
              "status": "affected",
              "version": "530",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Demid Uzenkov and Kirill Kutaev (Positive Technologies)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003eThe Honeywell Experion PKS contains an \u003c/span\u003e\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003eUninitialized Variable i\u003c/span\u003e\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003en the common Epic Platform Analyzer (EPA) communications\u003c/span\u003e\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003e. An attacker could potentially exploit this vulnerability, leading to a Communication Channel Manipulation, which results in a d\u003c/span\u003eereferencing of an uninitialized pointer leading to a denial of service.\u003cbr\u003e\u003cbr\u003e\n\nHoneywell recommends updating to the most recent version of \n\nHoneywell Experion PKS: 520.2 TCU9 HF1and\u0026nbsp;530.1 TCU3 HF1.\u0026nbsp;\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003eThe 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\u0026nbsp;from 520.1 through 520.2 TCU9 and from 530 through 530 TCU3.\u003c/span\u003e\u003cbr\u003e"
            }
          ],
          "value": "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."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-216",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-216 Communication Channel Manipulation"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-457",
              "description": "CWE-457 Use of Uninitialized Variable",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-08-04T19:44:48.506Z",
        "orgId": "0dc86260-d7e3-4e81-ba06-3508e030ce8d",
        "shortName": "Honeywell"
      },
      "references": [
        {
          "url": "https://process.honeywell.com/"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Dereferencing of an uninitialized pointer leads to denial of service.",
      "x_generator": {
        "engine": "Vulnogram 0.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "0dc86260-d7e3-4e81-ba06-3508e030ce8d",
    "assignerShortName": "Honeywell",
    "cveId": "CVE-2025-2520",
    "datePublished": "2025-07-10T19:54:35.250Z",
    "dateReserved": "2025-03-19T13:57:27.868Z",
    "dateUpdated": "2025-08-04T19:44:48.506Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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

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.