CVE-2022-3396

Code execution via malformed CXP file parsing

Published Oct 6, 2022 · Updated Apr 16, 2025

Out-of-bounds write in OMRON CX-Programmer 9.78 and earlier allows remote attackers to execute code through a malicious CXP file. The CXP-file parser fails to validate user-supplied data before a memory write, corrupting process memory. Exploitation requires a user to open the file or visit a malicious page, after which code runs with the current process'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 remote attackers to execute code through a malicious CXP file. The CXP-file parser fails to validate user-supplied data before a memory write, corrupting process memory. Exploitation requires a user to open the file or visit a malicious page, after which code runs with the current process's privileges.

The record

CVE
CVE-2022-3396
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

7.8CISA ICS-CERTCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/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
T1204.002Malicious 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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