What is CVE-2022-3398?

CVE-2022-3398 is a high-severity vulnerability in Omron Cx-Programmer, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2022-10-06.

How severe is CVE-2022-3398?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in Omron Cx-Programmer

CVE-2022-3398

OMRON CX-Programmer 9.78 and prior is vulnerable to an Out-of-Bounds Write, which may allow an attacker to execute arbitrary code.

Vulnerability class: Buffer Overflow

Published 2022-10-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (47.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 47.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000

Affected products

Omron Cx-Programmer — versions unspecified

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

www.cisa.gov/uscert/ics/advisories/icsa-22-277-04 (US Government Resource, Third Party Advisory)

Frequently asked questions

What is CVE-2022-3398?: CVE-2022-3398 is a high-severity vulnerability in Omron Cx-Programmer, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2022-10-06.
How severe is CVE-2022-3398?: High severity. CVSS v3 base score is 7.8 out of 10.