Vulnerability in Honeywell C300 Pcnt02
CVE-2025-2520
The Honeywell Experion PKS contains an Uninitialized Variable in the common Epic Platform Analyzer (EPA) communications. An attacker could potentially exploit this vulnerability, leading to a Communication Channel Manipulation, which results in a dereferencing of an uninitialized pointer leading to a denial of service. Honeywell recommends updating to the most recent version of Honeywell Experion PKS: 520.2 TCU9 HF1and 530.1 TCU3 HF1. The affected Experion PKS products are C300 PCNT02, EHB, EHPM, ELMM, Classic ENIM, ETN, FIM4, FIM8, PGM, and RFIM. The Experion PKS versions affected are from 520.1 through 520.2 TCU9 and from 530 through 530 TCU3.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (29.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 29.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
- Honeywell C300 Pcnt02 — versions 520.1, 530
- Honeywell Classic Enim — versions 520.1, 530
- Honeywell Ehb — versions 520.1, 530
- Honeywell Ehpm — versions 520.1, 530
- Honeywell Elmm — versions 520.1, 530
- Honeywell Etn — versions 520.1, 530
- Honeywell Fim4 — versions 520.1, 530
- Honeywell Fim8 — versions 520.1, 530
- Honeywell Pgm — versions 520.1, 530
- Honeywell Rfim — versions 520.1, 530
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2025-2520?
- CVE-2025-2520 is a high-severity vulnerability in Honeywell C300 Pcnt02, classified under CWE-457. CVSS score: 7.5/10. Published 2025-07-10.
- How severe is CVE-2025-2520?
- High severity. CVSS v3 base score is 7.5 out of 10.