How severe is CVE-2022-31205?

CVE-2022-31205 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-2022-31205 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-31205?

CVE-2022-31205 primarily affects Omron Sysmac Cs1 Firmware. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-31205?

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-2022-31205 published?

CVE-2022-31205 was published on 2022-07-26 and last updated on 2026-06-17.

CVE-2022-31205

CVE-2022-31205 is a high-severity vulnerability in Omron Sysmac Cs1 Firmware 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-312.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-312
Affected product: Omron Sysmac Cs1 Firmware
Published: 2022-07-26
Last modified: 2026-06-17

Description

In Omron CS series, CJ series, and CP series PLCs through 2022-05-18, the password for access to the Web UI is stored in memory area D1449...D1452 and can be read out using the Omron FINS protocol without any further authentication.

Frequently asked questions

What is CVE-2022-31205?: In Omron CS series, CJ series, and CP series PLCs through 2022-05-18, the password for access to the Web UI is stored in memory area D1449...D1452 and can be read out using the Omron FINS protocol without any further authentication.
How severe is CVE-2022-31205?: CVE-2022-31205 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-2022-31205 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-31205?: CVE-2022-31205 primarily affects Omron Sysmac Cs1 Firmware. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-31205?: 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-2022-31205 published?: CVE-2022-31205 was published on 2022-07-26 and last updated on 2026-06-17.

References

Affected products (7)

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:-:*:*:*:*:*:*:*

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