How severe is CVE-2022-31204?

CVE-2022-31204 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2022-31204 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-31204?

CVE-2022-31204 primarily affects Omron Cx-programmer. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-31204?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2022-31204 published?

CVE-2022-31204 was published on 2022-07-26 and last updated on 2026-06-17.

CVE-2022-31204

CVE-2022-31204 is a high-severity vulnerability in Omron Cx-programmer with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-319.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-319
Affected product: Omron Cx-programmer
Published: 2022-07-26
Last modified: 2026-06-17

Description

Omron CS series, CJ series, and CP series PLCs through 2022-05-18 use cleartext passwords. They feature a UM Protection setting that allows users or system integrators to configure a password in order to restrict sensitive engineering operations (such as project/logic uploads and downloads). This password is set using the OMRON FINS command Program Area Protect and unset using the command Program Area Protect Clear, both of which are transmitted in cleartext.

Frequently asked questions

What is CVE-2022-31204?: Omron CS series, CJ series, and CP series PLCs through 2022-05-18 use cleartext passwords. They feature a UM Protection setting that allows users or system integrators to configure a password in order to restrict sensitive engineering operations (such as project/logic uploads and downloads). This password is set using the OMRON FINS command Program Area Protect and unset using the command Program Area Protect Clear, both of which are transmitted in cleartext.
How severe is CVE-2022-31204?: CVE-2022-31204 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2022-31204 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-31204?: CVE-2022-31204 primarily affects Omron Cx-programmer. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-31204?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2022-31204 published?: CVE-2022-31204 was published on 2022-07-26 and last updated on 2026-06-17.

References

Affected products (8)

cpe:2.3:o:omron:sysmac_cs1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:omron:sysmac_cj2m_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:omron:sysmac_cj2h_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:omron:sysmac_cp1e_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:omron:sysmac_cp1h_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:omron:sysmac_cp1l_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:omron:cp1w-cif41_firmware:-:*:*:*:*:*:*:*
cpe:2.3:a:omron:cx-programmer:*:*:*:*:*:*:*:*

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