Omron CS series, CJ series, and CP series PLCs through 2022-05-18 use cleartext passwords.
Priority LOW 34CWE-319Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-319.
Summary
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.
Why it matters now
EPSS 0.0067 52nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 15
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:omron:sysmac_cs1_firmware:*:*:*:*:*:*:*:* | before 4.1 | Vulnerable | OMRON Corporation |
| cpe:2.3:h:omron:sysmac_cs1:-:*:*:*:*:*:*:* | not specified by NVD | Running on | OMRON Corporation |
| cpe:2.3:o:omron:sysmac_cj2m_firmware:*:*:*:*:*:*:*:* | before 2.1 | Vulnerable | OMRON Corporation |
| cpe:2.3:h:omron:sysmac_cj2m:-:*:*:*:*:*:*:* | not specified by NVD | Running on | OMRON Corporation |
| cpe:2.3:o:omron:sysmac_cj2h_firmware:*:*:*:*:*:*:*:* | before 1.5 | Vulnerable | OMRON Corporation |
| cpe:2.3:h:omron:sysmac_cj2h:-:*:*:*:*:*:*:* | not specified by NVD | Running on | OMRON Corporation |
| cpe:2.3:o:omron:sysmac_cp1e_firmware:*:*:*:*:*:*:*:* | before 1.30 | Vulnerable | OMRON Corporation |
| cpe:2.3:h:omron:sysmac_cp1e:-:*:*:*:*:*:*:* | not specified by NVD | Running on | OMRON Corporation |
| cpe:2.3:o:omron:sysmac_cp1h_firmware:*:*:*:*:*:*:*:* | before 1.30 | Vulnerable | OMRON Corporation |
| cpe:2.3:h:omron:sysmac_cp1h:-:*:*:*:*:*:*:* | not specified by NVD | Running on | OMRON Corporation |
- cpe:2.3:o:omron:sysmac_cs1_firmware:*:*:*:*:*:*:*:* Versions before 4.1 Vulnerable ·OMRON Corporation
- cpe:2.3:h:omron:sysmac_cs1:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·OMRON Corporation
- cpe:2.3:o:omron:sysmac_cj2m_firmware:*:*:*:*:*:*:*:* Versions before 2.1 Vulnerable ·OMRON Corporation
- cpe:2.3:h:omron:sysmac_cj2m:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·OMRON Corporation
- cpe:2.3:o:omron:sysmac_cj2h_firmware:*:*:*:*:*:*:*:* Versions before 1.5 Vulnerable ·OMRON Corporation
- cpe:2.3:h:omron:sysmac_cj2h:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·OMRON Corporation
- cpe:2.3:o:omron:sysmac_cp1e_firmware:*:*:*:*:*:*:*:* Versions before 1.30 Vulnerable ·OMRON Corporation
- cpe:2.3:h:omron:sysmac_cp1e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·OMRON Corporation
- cpe:2.3:o:omron:sysmac_cp1h_firmware:*:*:*:*:*:*:*:* Versions before 1.30 Vulnerable ·OMRON Corporation
- cpe:2.3:h:omron:sysmac_cp1h:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·OMRON Corporation
Show 5 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:omron:sysmac_cp1l_firmware:*:*:*:*:*:*:*:* | before 1.10 | Vulnerable | OMRON Corporation |
| cpe:2.3:h:omron:sysmac_cp1l:-:*:*:*:*:*:*:* | not specified by NVD | Running on | OMRON Corporation |
| cpe:2.3:o:omron:cp1w-cif41_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | OMRON Corporation |
| cpe:2.3:h:omron:cp1w-cif41:-:*:*:*:*:*:*:* | not specified by NVD | Running on | OMRON Corporation |
| cpe:2.3:a:omron:cx-programmer:*:*:*:*:*:*:*:* | before 9.6 | Vulnerable | OMRON Corporation |
- cpe:2.3:o:omron:sysmac_cp1l_firmware:*:*:*:*:*:*:*:* Versions before 1.10 Vulnerable ·OMRON Corporation
- cpe:2.3:h:omron:sysmac_cp1l:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·OMRON Corporation
- cpe:2.3:o:omron:cp1w-cif41_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·OMRON Corporation
- cpe:2.3:h:omron:cp1w-cif41:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·OMRON Corporation
- cpe:2.3:a:omron:cx-programmer:*:*:*:*:*:*:*:* Versions before 9.6 Vulnerable ·OMRON Corporation
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2022-31204
- 2026-10-03 Alias added: GHSA-r7cc-f77m-gvjj
- 2026-10-12 EPSS moved to the 50th–90th percentile
References
More OMRON Corporation Cp1w-cif41 Firmware vulnerabilities
- TI-2023-12128 Missing authentication in OMRON Corporation Multiple OMRON products which implement FINS… CVSS 3.1CRITICAL 9.8
- TI-2022-13246 The Omron SYSMAC Cx product family PLCs (CS series, CJ series, and CP series) through… CVSS 3.1CRITICAL 9.8
- TI-2022-13244 In Omron CS series, CJ series, and CP series PLCs through 2022-05-18, the password for… CVSS 3.1HIGH 7.5
Sources
- CVE-2022-31204 · CVE Program
- CVE-2022-31204 · NVD
- FIRST EPSS
- GHSA-r7cc-f77m-gvjj · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences