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CVE-2025-2520

Dereferencing of an uninitialized pointer leads to denial of service.

Published: Jul 10, 2025Updated: Jul 15, 2025 Sources: CVE List NVD BDU csafCWE-457
NVD MITRE
7.5CVSSHIGH
EPSS Score
0.4%
Top 72.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-457

Affected Products

C300 PCNT02HoneywellICS / OT / IoT
EHBHoneywellICS / OT / IoT
EHPMHoneywellICS / OT / IoT
ELMMHoneywellICS / OT / IoT
Classic ENIMHoneywellICS / OT / IoT
honeywellcommercialUSICS / OT / IoTaka experion server, saia pg5 controls suite, experion pks
and 6 more affected products View all →

Exploitability

Official Patch Available

References

https://process.honeywell.com/
process.honeywell.com
https://vulners.com/redhatcve/RH:CVE-2025-2520
vulners.com
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2025/icsa-25-205-03.json
raw.githubusercontent.com
and 20 more references View all →

Timeline

Published
Jul 10, 2025
Last Updated
Jul 15, 2025

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