CVE-2025-3946 is a high-severity vulnerability (CVSS 8.2) affecting Honeywell Experion PKS and OneWireless WDM, specifically within the Control Data Access (CDA) component. This "Deployment of Wrong Handler" flaw allows an unauthenticated attacker to manipulate input data, potentially leading to incorrect packet handling and remote code execution. While no public exploits or active exploitation have been observed, and community discussion is minimal, Honeywell recommends immediate updates to Experion PKS 520.2 TCU9 HF1, 530.1 TCU3 HF1, and OneWireless 322.5, 331.1 to mitigate the risk.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
| Honeywell | C200E | >= 520.1, <= 520.2 TCU9, >= 530, <= 530 TCU3CNA affecteddefault unaffected | |
| Honeywell | C300 PCNT02 | >= 520.1, <= 520.2 TCU9, >= 530, <= 530 TCU3CNA affecteddefault unaffected | |
| Honeywell | C300 PCNT05 | >= 520.1, <= 520.2 TCU9, >= 530, <= 530 TCU3CNA affecteddefault unaffected | |
| Honeywell | C300PM | >= 520.1, <= 520.2 TCU9, >= 530, <= 530 TCU3CNA affecteddefault unaffected | |
| Honeywell | CN100 | >= 520.1, <= 520.2 TCU9, >= 530, <= 530 TCU3CNA affecteddefault unaffected |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
No social media mentions found for this CVE.
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.