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CVE-2025-2520

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CVE-2025-2520

Published: Jul 10, 2025

Modified: Aug 4, 2025

PUBLISHED

CVSS v3.1

7.5

HIGH

Description

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.

VendorProductVersions

Honeywell

C300 PCNT02

affected
520.1 - <= 520.2 TCU9
affected
530 - <= 530 TCU3

Honeywell

EHB

affected
520.1 - <= 520.2 TCU9
affected
530 - <= 530 TCU3

Honeywell

EHPM

affected
520.1 - <= 520.2 TCU9
affected
530 - <= 530 TCU3

Honeywell

ELMM

affected
520.1 - <= 520.2 TCU9
affected
530 - <= 530 TCU3

Honeywell

Classic ENIM

affected
520.1 - <= 520.2 TCU9
affected
530 - <= 530 TCU3

Honeywell

ETN

affected
520.1 - <= 520.2 TCU9
affected
530 - <= 530 TCU3

Honeywell

FIM4

affected
520.1 - <= 520.2 TCU9
affected
530 - <= 530 TCU3

Honeywell

FIM8

affected
520.1 - <= 520.2 TCU9
affected
530 - <= 530 TCU3

Honeywell

PGM

affected
520.1 - <= 520.2 TCU9
affected
530 - <= 530 TCU3

Honeywell

RFIM

affected
520.1 - <= 520.2 TCU9
affected
530 - <= 530 TCU3

Weaknesses (CWE)

CWE-457

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

References

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