Improper check for unusual conditions in Triconex TCM 4351B installed on Tricon V11.3.x…
Priority LOW 18CWE-754Published · Updated
Key facts
- Attack vector
- Physical
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
Improper Check for Unusual or Exceptional Conditions vulnerability exists in Triconex TCM 4351B installed on Tricon V11.3.x systems that could cause module reset when TCM receives malformed TriStation packets while the write-protect keyswitch is in the program position.
Why it matters now
EPSS 0.00224 13th 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 |
|---|---|---|---|---|---|
| — | Triconex TCM 4351B installed on Tricon V11.3.x systems. | Triconex TCM 4351B installed on Tricon V11.3.x systems | — | No fix listed | CNA |
- Triconex TCM 4351B installed on Tricon V11.3.x systems. Vendor— Affected Triconex TCM 4351B installed on Tricon V11.3.x systems Fixed in — No fix listed CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:schneider-electric:triconex_model_3009_mp_firmware:*:*:*:*:*:*:*:* | 11.3.0 to before 11.8.0 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:triconex_model_3009_mp:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:tcm_4351b_firmware:*:*:*:*:*:*:*:* | 11.3.0 to before 11.5.1 | Vulnerable | Schneider Electric |
| cpe:2.3:o:schneider-electric:tcm_4351b_firmware:11.7.0:*:*:*:*:*:*:* | 11.7.0 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:tcm_4351b:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
- cpe:2.3:o:schneider-electric:triconex_model_3009_mp_firmware:*:*:*:*:*:*:*:* Versions 11.3.0 to before 11.8.0 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:triconex_model_3009_mp:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:tcm_4351b_firmware:*:*:*:*:*:*:*:* Versions 11.3.0 to before 11.5.1 Vulnerable ·Schneider Electric
- cpe:2.3:o:schneider-electric:tcm_4351b_firmware:11.7.0:*:*:*:*:*:*:* Versions 11.7.0 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:tcm_4351b:-:*:*:*:*:*:*:* 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-2021-22743
- 2026-10-03 Alias added: GHSA-48h6-xg8f-qv46
References
More Schneider Electric Tcm 4351b Firmware vulnerabilities
- TI-2021-05628 Improper check for unusual conditions in Triconex Model 3009 MP installed on Tricon… CVSS 3.1LOW 3.9
- TI-2021-05627 Improper check for unusual conditions in Triconex Model 3009 MP installed on Tricon… CVSS 3.1LOW 3.9
- TI-2021-05626 Improper check for unusual conditions in Triconex Model 3009 MP installed on Tricon… CVSS 3.1LOW 3.9
- TI-2021-05625 Improper check for unusual conditions in Triconex Model 3009 MP installed on Tricon… CVSS 3.1LOW 3.9
- TI-2021-05623 Improper check for unusual conditions in Triconex Model 3009 MP installed on Tricon… CVSS 3.1LOW 3.9
Sources
- CVE-2021-22743 · CVE Program
- CVE-2021-22743 · NVD
- FIRST EPSS
- GHSA-48h6-xg8f-qv46 · GitHub Advisory Database · CC BY 4.0
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