CVE-2025-3946

Incorrect response generation during FTEB protocol processing

HIGH
8.2
CVSS Score
Published: July 10, 2025 at 08:16 PM UTC
Updated: June 17, 2026 at 09:20 AM UTC
8 products affected across 1 vendorC300OneWireless Network Wireless Device ManagerC200E

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Severity
HIGH8.2
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

520.1 ≤ v ≤ 520.2 TCU9530 ≤ v ≤ 530 TCU3520.1530
520.1 ≤ v ≤ 520.2 TCU9530 ≤ v ≤ 530 TCU3520.1530
520.1 ≤ v ≤ 520.2 TCU9530 ≤ v ≤ 530 TCU3520.1530
520.1 ≤ v ≤ 520.2 TCU9530 ≤ v ≤ 530 TCU3520.1530
520.1 ≤ v ≤ 520.2 TCU9530 ≤ v ≤ 530 TCU3520.1530
520.1 ≤ v ≤ 520.2 TCU9530 ≤ v ≤ 530 TCU3520.1530
520.1 ≤ v ≤ 520.2 TCU9530 ≤ v ≤ 530 TCU3520.1530
322.1 ≤ v ≤ 322.4330.1 ≤ v ≤ 330.3322.1330.1

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.2HIGHHoneywell
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
HIGH
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-430

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