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CVE-2025-39478.2HighCWE-191

CVE-2025-3947: Integer underflow during processing of short network packets in CDA FTEB responder

Honeywell · C300 PCNT02

Affected: Honeywell C300 PCNT02 · Exploitation: unlikely (under 1%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

0.4%probability of exploitation in the next 30 days
31st percentile
050100

Higher than 31% of scored CVEs

8.2HighCVSS 3.1
LowHigh

DescriptionCVE.org

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.

Affected products9

From the CVE record. A product or version that is not listed is unknown, not unaffected.

  • Honeywell · C300 PCNT02from 520.1 up to and including 520.2 TCU9; from 530 up to and including 530 TCU3
  • Honeywell · C300 PCNT05from 520.1 up to and including 520.2 TCU9; from 530 up to and including 530 TCU3
  • Honeywell · FIM4from 520.1 up to and including 520.2 TCU9; from 530 up to and including 530 TCU3
  • Honeywell · FIM8from 520.1 up to and including 520.2 TCU9; from 530 up to and including 530 TCU3
  • Honeywell · UOCfrom 520.1 up to and including 520.2 TCU9; from 530 up to and including 530 TCU3
  • Honeywell · CN100from 520.1 up to and including 520.2 TCU9; from 530 up to and including 530 TCU3
  • Honeywell · HCAfrom 520.1 up to and including 520.2 TCU9; from 530 up to and including 530 TCU3
  • Honeywell · C300PMfrom 520.1 up to and including 520.2 TCU9; from 530 up to and including 530 TCU3
  • Honeywell · C200Efrom 520.1 up to and including 520.2 TCU9; from 530 up to and including 530 TCU3

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas
Exploitation
Unlikely (under 1%). EPSS under 1%, or no score yet.
CISA KEV
Not listed
Public check
No public nuclei template
Vendor
Honeywell
Published
July 2025

CoverageNo articles yet

No CyberSIXT article names CVE-2025-3947 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.

References

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