What is CVE-2023-7244?

CVE-2023-7244 is a critical-severity vulnerability in Cisa Icsnpp-Ethercat, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2024-03-01.

How severe is CVE-2023-7244?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Cisa Icsnpp-Ethercat

CVE-2023-7244

Industrial Control Systems Network Protocol Parsers (ICSNPP) - Ethercat Zeek Plugin versions d78dda6 and prior are vulnerable to out-of-bounds write in their primary analyses function for Ethercat communication packets. This could allow an attacker to cause arbitrary code execution.

Vulnerability class: Buffer Overflow

Published 2024-03-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.008 (55.5th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

www.cisa.gov/news-events/ics-advisories/icsa-24-051-02 (US Government Resource, Vendor Advisory)

Frequently asked questions

What is CVE-2023-7244?: CVE-2023-7244 is a critical-severity vulnerability in Cisa Icsnpp-Ethercat, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2024-03-01.
How severe is CVE-2023-7244?: Critical severity. CVSS v3 base score is 9.8 out of 10.