Vulnerability details

CVE-2025-3946

Honeywell C200EHoneywell C300 PCNT02Honeywell C300 PCNT05Honeywell C300PMHoneywell CN100Honeywell FIM4

Incorrect response generation during FTEB protocol processing

CVSS 3.1

8.2High

Official description

The Honeywell Experion PKS and OneWireless WDM contains a Deployment of Wrong Handler vulnerability in the component Control Data Access (CDA). An attacker could potentially exploit this vulnerability, leading to Input Data Manipulation, which could result in incorrect handling of packets leading to remote code execution. Honeywell recommends updating to the most recent version of Honeywell Experion PKS:520.2 TCU9 HF1 and 530.1 TCU3 HF1 and OneWireless: 322.5 and 331.1. 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. The OneWireless WDM affected versions are 322.1 through 322.4 and 330.1 through 330.3.

CVSS scores

Score	Version	Source	Vector
8.2High	3.1	CVEProject cvelistV5 (CNA) (Honeywell)	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H`

Affected products

Vendor	Product	Versions	Source
Honeywell	C200E	520.1 ≤ v ≤ 520.2 TCU9	CVEProject cvelistV5 (CNA)
Honeywell	C200E	530 ≤ v ≤ 530 TCU3	CVEProject cvelistV5 (CNA)
Honeywell	C300 PCNT02	520.1 ≤ v ≤ 520.2 TCU9	CVEProject cvelistV5 (CNA)
Honeywell	C300 PCNT02	530 ≤ v ≤ 530 TCU3	CVEProject cvelistV5 (CNA)
Honeywell	C300 PCNT05	520.1 ≤ v ≤ 520.2 TCU9	CVEProject cvelistV5 (CNA)
Honeywell	C300 PCNT05	530 ≤ v ≤ 530 TCU3	CVEProject cvelistV5 (CNA)
Honeywell	C300PM	520.1 ≤ v ≤ 520.2 TCU9	CVEProject cvelistV5 (CNA)
Honeywell	C300PM	530 ≤ v ≤ 530 TCU3	CVEProject cvelistV5 (CNA)
Honeywell	CN100	520.1 ≤ v ≤ 520.2 TCU9	CVEProject cvelistV5 (CNA)
Honeywell	CN100	530 ≤ v ≤ 530 TCU3	CVEProject cvelistV5 (CNA)
Honeywell	FIM4	520.1 ≤ v ≤ 520.2 TCU9	CVEProject cvelistV5 (CNA)
Honeywell	FIM4	530 ≤ v ≤ 530 TCU3	CVEProject cvelistV5 (CNA)
Honeywell	FIM8	520.1 ≤ v ≤ 520.2 TCU9	CVEProject cvelistV5 (CNA)
Honeywell	FIM8	530 ≤ v ≤ 530 TCU3	CVEProject cvelistV5 (CNA)
Honeywell	HCA	520.1 ≤ v ≤ 520.2 TCU9	CVEProject cvelistV5 (CNA)
Honeywell	HCA	530 ≤ v ≤ 530 TCU3	CVEProject cvelistV5 (CNA)
Honeywell	UOC	520.1 ≤ v ≤ 520.2 TCU9	CVEProject cvelistV5 (CNA)
Honeywell	UOC	530 ≤ v ≤ 530 TCU3	CVEProject cvelistV5 (CNA)
Honeywell	Wireless Device Manager	322.1 ≤ v ≤ 322.4	CVEProject cvelistV5 (CNA)
Honeywell	Wireless Device Manager	330.1 ≤ v ≤ 330.3	CVEProject cvelistV5 (CNA)

References and advisories

https://process.honeywell.com/

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Details

Published: 2025-07-10
Last updated: 2025-08-04
State: Published
Assigner (CNA): Honeywell

Exploit prediction (EPSS)

0.55%

Probability of exploitation in 30 days

46.5%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: No
Exploitation: None
Technical impact: Partial

Weaknesses (CWE)

CWE-430
Deployment of Wrong Handler