What is CVE-2023-7243?

CVE-2023-7243 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-2023-7243?

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

Buffer overflow in Cisa Icsnpp-Ethercat

CVE-2023-7243

Industrial Control Systems Network Protocol Parsers (ICSNPP) - Ethercat Zeek Plugin versions d78dda6 and prior are vulnerable to out-of-bounds write while analyzing specific Ethercat datagrams. This could allow an attacker to cause arbitrary code execution.

Vulnerability class: Buffer Overflow

EPSS: 0.008 (53.5th percentile) — read the EPSS interpretation.

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.

Affected products

Cisa Icsnpp-ethercat
Cisa Industrial Control Systems Network Protocol Parsers (Icsnpp) - Ethercat Plugin For Zeek — versions 0

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

ics-cert@hq.dhs.gov (US Government Resource, Vendor Advisory)

Frequently asked questions

What is CVE-2023-7243?: CVE-2023-7243 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-2023-7243?: Critical severity. CVSS v3 base score is 9.8 out of 10.