What is CVE-2023-38747?

CVE-2023-38747 is a high-severity vulnerability in Omron Cx-Programmer, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2023-08-03.

How severe is CVE-2023-38747?

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

Buffer overflow in Omron Cx-Programmer

CVE-2023-38747

Heap-based buffer overflow vulnerability exists in CX-Programmer Included in CX-One CXONE-AL[][]D-V4 V9.80 and earlier. By having a user open a specially crafted CXP file, information disclosure and/or arbitrary code execution may occur.

Vulnerability class: Buffer Overflow

Published 2023-08-03 · 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: 0.002 (13.7th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 13.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Omron Cx-Programmer
Omron Corporation Cx-Programmer — versions Included in CX-One CXONE-AL[][]D-V4 V9.80 and earlier

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

www.ia.omron.com/product/vulnerability/OMSR-2023-005_en.pdf (Vendor Advisory)
jvn.jp/en/vu/JVNVU93286117/ (Third Party Advisory)

Frequently asked questions

What is CVE-2023-38747?: CVE-2023-38747 is a high-severity vulnerability in Omron Cx-Programmer, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2023-08-03.
How severe is CVE-2023-38747?: High severity. CVSS v3 base score is 7.8 out of 10.