CVE-2022-31204Network attack vector

Password disclosure via cleartext FINS protection commands

Published Jul 26, 2022 · Updated Aug 3, 2024

Cleartext transmission in Omron CS, CJ, and CP series PLCs allows attackers to capture UM Protection passwords on the network. The FINS Program Area Protect and Program Area Protect Clear commands transmit the configured password without encryption while setting or clearing protection. Packet interception or a man-in-the-middle position is required; the exposed password enables protected project or logic uploads and downloads.

CVSS severity6.5
Medium
EPSS probability0.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext transmission in Omron CS, CJ, and CP series PLCs allows attackers to capture UM Protection passwords on the network. The FINS Program Area Protect and Program Area Protect Clear commands transmit the configured password without encryption while setting or clearing protection. Packet interception or a man-in-the-middle position is required; the exposed password enables protected project or logic uploads and downloads.

The record

CVE
CVE-2022-31204
Published
Jul 26, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-319, T0842
Attack vector
network
Privileges
unauthenticated

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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5Omron via JVNCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-319Cleartext Transmission of Sensitive Information
T0842Network Sniffing

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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