CVE-2022-31207Network attack vector

Code execution via unauthenticated downloaded logic

Published Jul 26, 2022 · Updated Aug 3, 2024

Insufficient data-authenticity verification in Omron SYSMAC CS/CJ/CP Series PLCs allows remote attackers to execute object code. FINS engineering downloads accept compiled user-program object code without cryptographic authentication before routing it to an ASIC or ROM interpreter. The attack requires the ability to alter FINS engineering traffic sent to an unprotected controller and can also halt the PLC.

CVSS severity5.9
Medium
EPSS probability0.92%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insufficient data-authenticity verification in Omron SYSMAC CS/CJ/CP Series PLCs allows remote attackers to execute object code. FINS engineering downloads accept compiled user-program object code without cryptographic authentication before routing it to an ASIC or ROM interpreter. The attack requires the ability to alter FINS engineering traffic sent to an unprotected controller and can also halt the PLC.

The record

CVE
CVE-2022-31207
Published
Jul 26, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-347, CWE-345, T0843
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jul 26, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.9CISACVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-347Improper Verification of Cryptographic Signature
CWE-345Insufficient Verification of Data Authenticity
T0843Program Download

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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