CVE-2023-38746

Code execution via out-of-bounds CXP file read

Published Aug 3, 2023 · Updated Oct 17, 2024

Out-of-bounds read in OMRON CX-Programmer 9.80 and earlier allows attackers to execute code via a crafted CXP file. CXP project files are compressed binary files, but OMRON has not published the affected parser routine or the precise bounds error. Opening the file requires user interaction and can expose information or execute arbitrary code in the user's context.

CVSS severity7.8
High
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in OMRON CX-Programmer 9.80 and earlier allows attackers to execute code via a crafted CXP file. CXP project files are compressed binary files, but OMRON has not published the affected parser routine or the precise bounds error. Opening the file requires user interaction and can expose information or execute arbitrary code in the user's context.

The record

CVE
CVE-2023-38746
Published
Aug 3, 2023
Updated
Oct 17, 2024
Vendor
OMRON Corporation
Product
CX-Programmer
Classifications
CWE-125, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 3, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 17, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Included in CX-One CXONE-AL[][]D-V4 V9.80 and earlier

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

OMRON Corporation · CX-Programmerversion=Included in CX-One CXONE-AL[][]D-V4 V9.80 and earlier

Published CVSS scores

7.8JPCERT/CCCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.8OMRON CorporationCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1204.002Malicious File

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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