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.
References (1)
Scores
CVSS v3
7.5
EPSS
0.0010
EPSS Percentile
27.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-457
Status
published
Products (20)
Honeywell/C300 PCNT02
520.1 - 520.2 TCU9
Honeywell/C300 PCNT02
530 - 530 TCU3
Honeywell/Classic ENIM
520.1 - 520.2 TCU9
Honeywell/Classic ENIM
530 - 530 TCU3
Honeywell/EHB
520.1 - 520.2 TCU9
Honeywell/EHB
530 - 530 TCU3
Honeywell/EHPM
520.1 - 520.2 TCU9
Honeywell/EHPM
530 - 530 TCU3
Honeywell/ELMM
520.1 - 520.2 TCU9
Honeywell/ELMM
530 - 530 TCU3
... and 10 more
Published
Jul 10, 2025
Tracked Since
Feb 18, 2026