What is CVE-2023-22357?

CVE-2023-22357 is a critical-severity vulnerability in Omron Cp1l-El20dr-D, classified under Active Debug Code. CVSS score: 9.8/10. Published 2023-01-17.

How severe is CVE-2023-22357?

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

Vulnerability in Omron Cp1l-El20dr-D

CVE-2023-22357

Active debug code exists in OMRON CP1L-EL20DR-D all versions, which may lead to a command that is not specified in FINS protocol being executed without authentication. A remote unauthenticated attacker may read/write in arbitrary area of the device memory, which may lead to overwriting the firmware, causing a denial-of-service (DoS) condition, and/or arbitrary code execution.

Published 2023-01-17 · 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: 0.012 (66.1th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 66.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Omron Cp1l-El20dr-D
Omron Cp1l-El20dr-D Firmware
Omron Corporation Cp1l-El20dr-D — versions All versions

Weakness classification (CWE)

CWE-489 — Active Debug Code

References

jvn.jp/en/vu/JVNVU97575890/index.html (Third Party Advisory)

Frequently asked questions

What is CVE-2023-22357?: CVE-2023-22357 is a critical-severity vulnerability in Omron Cp1l-El20dr-D, classified under Active Debug Code. CVSS score: 9.8/10. Published 2023-01-17.
How severe is CVE-2023-22357?: Critical severity. CVSS v3 base score is 9.8 out of 10.