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CVE-2025-3947

8.2 · HIGH

The Honeywell Experion PKS contains an Integer Underflow vulnerability in the component Control Data Access (CDA).

Published Jul 10, 2025CWE-191EPSS 0.37%

Overview

CVE-2025-3947 is a high-severity vulnerability. It was published on July 10, 2025 and has a CVSS 3.1 base score of 8.2 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refprocess.honeywell.com/

How CyberStrike helps

Frequently asked questions

What is CVE-2025-3947?

CVE-2025-3947 is a high-severity vulnerability. It was published on July 10, 2025 and has a CVSS 3.1 base score of 8.2 (HIGH).

How severe is CVE-2025-3947?

This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2025-3947?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-3947?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-3947 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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