CVE-2022-3398

Arbitrary code execution via malformed project file

Published Oct 6, 2022 · Updated Apr 16, 2025

Out-of-bounds write in OMRON CX-Programmer 9.78 and earlier allows attackers to execute arbitrary code through a crafted project file. The project-file parser writes beyond an allocated buffer while loading malformed project data; public sources do not identify the affected function or field. A user must open the file in the Windows application, after which the process can crash or run attacker-controlled code with that user's privileges.

CVSS severity7.8
High
EPSS probability0.61%
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 write in OMRON CX-Programmer 9.78 and earlier allows attackers to execute arbitrary code through a crafted project file. The project-file parser writes beyond an allocated buffer while loading malformed project data; public sources do not identify the affected function or field. A user must open the file in the Windows application, after which the process can crash or run attacker-controlled code with that user's privileges.

The record

CVE
CVE-2022-3398
Published
Oct 6, 2022
Updated
Apr 16, 2025
Vendor
OMRON Corporation
Product
CX-Programmer
Classifications
CWE-787, T1203, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 6, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 16, 2025Record 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=unspecified <=9.78

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

OMRON Corporation · CX-Programmerversion=unspecified <=9.78

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.8ICS-CERTCVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-787Out-of-bounds Write
T1203Exploitation for Client Execution
T1204.002User Execution: Malicious 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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