Vulnerability details
CVE-2025-3947
Honeywell C200EHoneywell C300 PCNT02Honeywell C300 PCNT05Honeywell C300PMHoneywell CN100Honeywell FIM4
Integer underflow during processing of short network packets in CDA FTEB responder
CVSS 3.1
8.2High
Official description
The Honeywell Experion PKS contains an Integer Underflow vulnerability in the component Control Data Access (CDA). An attacker could potentially exploit this vulnerability, leading to Input Data Manipulation, which could result in improper integer data value checking during subtraction leading to a denial of service. Honeywell recommends updating to the most recent version of Honeywell Experion PKS:520.2 TCU9 HF1 and 530.1 TCU3 HF1. 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.2High | 3.1 | CVEProject cvelistV5 (CNA) (Honeywell) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Honeywell | C200E | 520.1 ≤ v ≤ 520.2 TCU9 | CVEProject cvelistV5 (CNA) |
| Honeywell | C200E | 530 ≤ v ≤ 530 TCU3 | CVEProject cvelistV5 (CNA) |
| Honeywell | C300 PCNT02 | 520.1 ≤ v ≤ 520.2 TCU9 | CVEProject cvelistV5 (CNA) |
| Honeywell | C300 PCNT02 | 530 ≤ v ≤ 530 TCU3 | CVEProject cvelistV5 (CNA) |
| Honeywell | C300 PCNT05 | 520.1 ≤ v ≤ 520.2 TCU9 | CVEProject cvelistV5 (CNA) |
| Honeywell | C300 PCNT05 | 530 ≤ v ≤ 530 TCU3 | CVEProject cvelistV5 (CNA) |
| Honeywell | C300PM | 520.1 ≤ v ≤ 520.2 TCU9 | CVEProject cvelistV5 (CNA) |
| Honeywell | C300PM | 530 ≤ v ≤ 530 TCU3 | CVEProject cvelistV5 (CNA) |
| Honeywell | CN100 | 520.1 ≤ v ≤ 520.2 TCU9 | CVEProject cvelistV5 (CNA) |
| Honeywell | CN100 | 530 ≤ v ≤ 530 TCU3 | CVEProject cvelistV5 (CNA) |
| Honeywell | FIM4 | 520.1 ≤ v ≤ 520.2 TCU9 | CVEProject cvelistV5 (CNA) |
| Honeywell | FIM4 | 530 ≤ v ≤ 530 TCU3 | CVEProject cvelistV5 (CNA) |
| Honeywell | FIM8 | 520.1 ≤ v ≤ 520.2 TCU9 | CVEProject cvelistV5 (CNA) |
| Honeywell | FIM8 | 530 ≤ v ≤ 530 TCU3 | CVEProject cvelistV5 (CNA) |
| Honeywell | HCA | 520.1 ≤ v ≤ 520.2 TCU9 | CVEProject cvelistV5 (CNA) |
| Honeywell | HCA | 530 ≤ v ≤ 530 TCU3 | CVEProject cvelistV5 (CNA) |
| Honeywell | UOC | 520.1 ≤ v ≤ 520.2 TCU9 | CVEProject cvelistV5 (CNA) |
| Honeywell | UOC | 530 ≤ v ≤ 530 TCU3 | CVEProject cvelistV5 (CNA) |
References and advisories
1
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Details
- Published
- 2025-07-10
- Last updated
- 2025-08-04
- State
- Published
- Assigner (CNA)
- Honeywell
Exploit prediction (EPSS)
0.36%
Probability of exploitation in 30 days
30.7%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-191Integer Underflow (Wrap or Wraparound)