CVE-2025-3947

| EUVD-2025-21065 HIGH
2025-07-10 [email protected]
Denial Of Service
8.2
CVSS 3.1
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CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
High

Lifecycle Timeline

3
Analysis Generated
Mar 16, 2026 - 06:52 vuln.today
EUVD ID Assigned
Mar 16, 2026 - 06:52 euvd
EUVD-2025-21065
CVE Published
Jul 10, 2025 - 21:15 nvd
HIGH 8.2

DescriptionNVD

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.

AnalysisAI

A denial of service vulnerability in Honeywell Experion PKS (CVSS 8.2). High severity vulnerability requiring prompt remediation.

Technical ContextAI

CWE-191 (Integer Underflow). CVSS 8.2 indicates high severity. Affects Honeywell Experion PKS.

RemediationAI

Monitor vendor channels for patch availability.

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CVE-2025-3947 vulnerability details – vuln.today
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