Description
The Honeywell Experion PKS contains an Integer Underflow vulnerability in the component Control Data Access (CDA). An attacker could potentially exploit this vulnerability, leading to Input Data Manipulation, which could result in improper integer data value checking during subtraction leading to a denial of service. Honeywell recommends updating to the most recent version of Honeywell Experion PKS:520.2 TCU9 HF1 and 530.1 TCU3 HF1. The affected Experion PKS products are C300 PCNT02, C300 PCNT05, FIM4, FIM8, UOC, CN100, HCA, C300PM, and C200E. The Experion PKS versions affected are from 520.1 through 520.2 TCU9 and from 530 through 530 TCU3.
References (1)
Scores
CVSS v3
8.2
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:L/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-191
Status
published
Products (18)
Honeywell/C200E
520.1 - 520.2 TCU9
Honeywell/C200E
530 - 530 TCU3
Honeywell/C300 PCNT02
520.1 - 520.2 TCU9
Honeywell/C300 PCNT02
530 - 530 TCU3
Honeywell/C300 PCNT05
520.1 - 520.2 TCU9
Honeywell/C300 PCNT05
530 - 530 TCU3
Honeywell/C300PM
520.1 - 520.2 TCU9
Honeywell/C300PM
530 - 530 TCU3
Honeywell/CN100
520.1 - 520.2 TCU9
Honeywell/CN100
530 - 530 TCU3
... and 8 more
Published
Jul 10, 2025
Tracked Since
Feb 18, 2026