What is CVE-2023-7242?

CVE-2023-7242 is a high-severity vulnerability in Cisa Icsnpp-Ethercat, classified under Out-of-bounds Read. CVSS score: 8.2/10. Published 2024-03-01.

How severe is CVE-2023-7242?

High severity. CVSS v3 base score is 8.2 out of 10.

Out-of-bounds Read in Cisa Icsnpp-Ethercat

CVE-2023-7242

Industrial Control Systems Network Protocol Parsers (ICSNPP) - Ethercat Zeek Plugin versions d78dda6 and prior are vulnerable to out-of-bounds read during the process of analyzing a specific Ethercat packet. This could allow an attacker to crash the Zeek process and leak some information in memory.

Vulnerability class: Buffer Overflow

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

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H.

EPSS exploit prediction

EPSS: 0.005 (38.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 38.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

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

Frequently asked questions

What is CVE-2023-7242?: CVE-2023-7242 is a high-severity vulnerability in Cisa Icsnpp-Ethercat, classified under Out-of-bounds Read. CVSS score: 8.2/10. Published 2024-03-01.
How severe is CVE-2023-7242?: High severity. CVSS v3 base score is 8.2 out of 10.