Overview
The CVE-2025-3946 vulnerability represents a significant security threat to users of Honeywell Experion PKS and OneWireless WDM products. The vulnerability lies in the Control Data Access (CDA) component of the aforementioned Honeywell products. This vulnerability can cause incorrect handling of packets, leading to the possibility of remote code execution, a threat with potentially severe consequences.
The risks associated with this vulnerability make it a high priority issue for all users of the affected products. Without proper mitigation, this vulnerability could lead to system compromise or data leakage, posing a serious threat to the integrity of both personal and corporate networks.
Vulnerability Summary
CVE ID: CVE-2025-3946
Severity: High (CVSS: 8.2)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage
Affected Products
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Product | Affected Versions
Experion PKS | 520.1 – 520.2 TCU9, 530 – 530 TCU3
OneWireless WDM | 322.1 – 322.4, 330.1 – 330.3
How the Exploit Works
The vulnerability arises from the incorrect deployment of a handler in the Control Data Access (CDA) component of the Experion PKS and OneWireless WDM. This wrongful deployment can be exploited by an attacker to manipulate the input data, causing the system to incorrectly handle packets. This could potentially enable an attacker to execute remote code, thereby compromising the system.
Conceptual Example Code
Here is a conceptual example of how this vulnerability might be exploited. This is a simplified representation and does not represent an actual exploit.
POST /CDA/endpoint HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "manipulated_data": "{malicious_code}" }In this example, the attacker sends a manipulated data packet to the vulnerable endpoint. The system then incorrectly handles this packet due to the vulnerability, leading to the execution of the malicious code.
Mitigation
It is strongly recommended to update to the most recent versions of Honeywell Experion PKS:520.2 TCU9 HF1 and 530.1 TCU3 HF1 and OneWireless: 322.5 and 331.1. If immediate update is not possible, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can be used as a temporary mitigation measure. However, please note that these are just temporary solutions and updating to the recommended versions is the most effective way to mitigate this vulnerability.