Vulnerability · Published Jul 10, 2025 · Assigned by Honeywell
CVE-2025-3946Incorrect response generation during FTEB protocol processing
High 8.2
In plain English
A high-severity security flaw in C200E from Honeywell. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 46% of all known vulnerabilities).
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Honeywell | C300 PCNT02 | 520.1 – through 520.2 TCU9530 – through 530 TCU3 |
| Honeywell | C300 PCNT05 | 520.1 – through 520.2 TCU9530 – through 530 TCU3 |
| Honeywell | FIM4 | 520.1 – through 520.2 TCU9530 – through 530 TCU3 |
| Honeywell | FIM8 | 520.1 – through 520.2 TCU9530 – through 530 TCU3 |
| Honeywell | UOC | 520.1 – through 520.2 TCU9530 – through 530 TCU3 |
| Honeywell | CN100 | 520.1 – through 520.2 TCU9530 – through 530 TCU3 |
| Honeywell | HCA | 520.1 – through 520.2 TCU9530 – through 530 TCU3 |
| Honeywell | C300PM | 520.1 – through 520.2 TCU9530 – through 530 TCU3 |
| Honeywell | C200E | 520.1 – through 520.2 TCU9530 – through 530 TCU3 |
| Honeywell | Wireless Device Manager | 322.1 – through 322.4330.1 – through 330.3 |
Weakness: CWE-430 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H