CVE-2025-3946

Incorrect response generation during FTEB protocol processing

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.

Category

8.2
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.21%
Affected: Honeywell C300 PCNT02
Affected: Honeywell C300 PCNT05
Affected: Honeywell FIM4
Affected: Honeywell FIM8
Affected: Honeywell UOC
Affected: Honeywell CN100
Affected: Honeywell HCA
Affected: Honeywell C300PM
Affected: Honeywell C200E
Affected: Honeywell Wireless Device Manager
Published at:
Updated at:

References

Link Tags
https://process.honeywell.com/

Frequently Asked Questions

What is the severity of CVE-2025-3946?
CVE-2025-3946 has been scored as a high severity vulnerability.
How to fix CVE-2025-3946?
To fix CVE-2025-3946, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-3946 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-3946 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-3946?
CVE-2025-3946 affects Honeywell C300 PCNT02, Honeywell C300 PCNT05, Honeywell FIM4, Honeywell FIM8, Honeywell UOC, Honeywell CN100, Honeywell HCA, Honeywell C300PM, Honeywell C200E, Honeywell Wireless Device Manager.
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