**VERSION NOT SUPPORTED WHEN ASSIGNED** A legacy debug port account in TCMs installed in…
Priority LOW 35Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
**VERSION NOT SUPPORTED WHEN ASSIGNED** A legacy debug port account in TCMs installed in Tricon system versions 10.2.0 through 10.5.3 is visible on the network and could allow inappropriate access. This vulnerability was remediated in TCM version 10.5.4.
Why it matters now
EPSS 0.01308 70th 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 |
|---|---|---|---|---|---|
| — | Tricon system versions 10.2.0 through 10.5.3 | Tricon system versions 10.2.0 through 10.5.3 | — | No fix listed | CNA |
- Tricon system versions 10.2.0 through 10.5.3 Vendor— Affected Tricon system versions 10.2.0 through 10.5.3 Fixed in — No fix listed CNA
CPE configurations NVD · 14
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:schneider-electric:tricon_tcm_4351_firmware:*:*:*:*:*:*:*:* | 10.2.0 to before 10.5.4 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:tricon_tcm_4351:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:tricon_tcm_4352_firmware:*:*:*:*:*:*:*:* | 10.2.0 to before 10.5.4 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:tricon_tcm_4352:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:tricon_tcm_4351a_firmware:*:*:*:*:*:*:*:* | 10.2.0 to before 10.5.4 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:tricon_tcm_4351a:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:tricon_tcm_4351b_firmware:*:*:*:*:*:*:*:* | 10.2.0 to before 10.5.4 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:tricon_tcm_4351b:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:tricon_tcm_4352a_firmware:*:*:*:*:*:*:*:* | 10.2.0 to before 10.5.4 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:tricon_tcm_4352a:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
- cpe:2.3:o:schneider-electric:tricon_tcm_4351_firmware:*:*:*:*:*:*:*:* Versions 10.2.0 to before 10.5.4 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:tricon_tcm_4351:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:tricon_tcm_4352_firmware:*:*:*:*:*:*:*:* Versions 10.2.0 to before 10.5.4 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:tricon_tcm_4352:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:tricon_tcm_4351a_firmware:*:*:*:*:*:*:*:* Versions 10.2.0 to before 10.5.4 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:tricon_tcm_4351a:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:tricon_tcm_4351b_firmware:*:*:*:*:*:*:*:* Versions 10.2.0 to before 10.5.4 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:tricon_tcm_4351b:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:tricon_tcm_4352a_firmware:*:*:*:*:*:*:*:* Versions 10.2.0 to before 10.5.4 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:tricon_tcm_4352a:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
Show 4 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:schneider-electric:tricon_tcm_4352b_firmware:*:*:*:*:*:*:*:* | 10.2.0 to before 10.5.4 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:tricon_tcm_4352b:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:tristation_1131_firmware:*:*:*:*:*:*:*:* | 1.0.0 – 4.9.0; 4.10.0 – 4.12.0 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:tristation_1131:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
- cpe:2.3:o:schneider-electric:tricon_tcm_4352b_firmware:*:*:*:*:*:*:*:* Versions 10.2.0 to before 10.5.4 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:tricon_tcm_4352b:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:tristation_1131_firmware:*:*:*:*:*:*:*:* Versions 1.0.0 – 4.9.0; 4.10.0 – 4.12.0 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:tristation_1131:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-7491
- 2026-10-03 Alias added: GHSA-6q95-r497-79jw
References
More Schneider Electric Tricon Tcm 4351 Firmware vulnerabilities
- TI-2020-06009 Uncontrolled resource consumption in Tricon TCM Model 4351, 4352, 4351A/B, 4352A/B CVSS 3.1HIGH 7.5
Sources
- CVE-2020-7491 · CVE Program
- CVE-2020-7491 · NVD
- FIRST EPSS
- GHSA-6q95-r497-79jw · 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