What is CVE-2022-43604?

CVE-2022-43604 is a critical-severity vulnerability in Eip Stack Group Opener, classified under Out-of-bounds Write. CVSS score: 10.0/10. Published 2023-03-16.

How severe is CVE-2022-43604?

Critical severity. CVSS v3 base score is 10.0 out of 10.

Buffer overflow in Eip Stack Group Opener

CVE-2022-43604

An out-of-bounds write vulnerability exists in the GetAttributeList attribute_count_request functionality of EIP Stack Group OpENer development commit 58ee13c. A specially crafted EtherNet/IP request can lead to an out-of-bounds write, potentially causing the server to crash or allow for remote code execution. An attacker can send a series of EtherNet/IP requests to trigger this vulnerability.

Vulnerability class: Buffer Overflow

Published 2023-03-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.144 (96.5th percentile), scored 2026-09-30.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 96.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.144 · newest: 0.144 · change: 0.000

Affected products

Eip Stack Group Opener — versions development commit 58ee13c
Opener Project

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

talosintelligence.com/vulnerability_reports/TALOS-2022-1661 (Exploit, Third Party Advisory)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2022-43604?: CVE-2022-43604 is a critical-severity vulnerability in Eip Stack Group Opener, classified under Out-of-bounds Write. CVSS score: 10.0/10. Published 2023-03-16.
How severe is CVE-2022-43604?: Critical severity. CVSS v3 base score is 10.0 out of 10.