Improper check for unusual conditions in Schneider Electric Embedded Web Servers in all…
Priority LOW 36CWE-754Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA.
Summary
An Improper Check for Unusual or Exceptional Conditions vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 where an unauthenticated user can send a specially crafted XML data via a POST request to cause the web server to become unavailable
Why it matters now
EPSS 0.01381 72nd 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 |
|---|---|---|---|---|---|
| Schneider Electric | Embedded Web Servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 | Embedded Web Servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 | — | No fix listed | CNA |
- Embedded Web Servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 VendorSchneider Electric Affected Embedded Web Servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:schneider-electric:modicom_m340_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:modicom_m340:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:modicom_premium_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:modicom_premium:*:*:*:*:*:*:*:* | all versions | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:modicom_quantum_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:modicom_quantum:*:*:*:*:*:*:*:* | all versions | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:modicom_bmxnor0200h_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:modicom_bmxnor0200h:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
- cpe:2.3:o:schneider-electric:modicom_m340_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:modicom_m340:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:modicom_premium_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:modicom_premium:*:*:*:*:*:*:*:* Versions all versions Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:modicom_quantum_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:modicom_quantum:*:*:*:*:*:*:*:* Versions all versions Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:modicom_bmxnor0200h_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:modicom_bmxnor0200h:-:*:*:*:*:*:*:* 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-2018-7833
- 2026-10-03 Alias added: GHSA-46rq-v233-vjx5
References
More Schneider Electric Modicom Bmxnor0200h Firmware vulnerabilities
- TI-2018-05651 Weak password recovery in Schneider Electric Embedded Web Servers in all Modicon M340… CVSS 3.0CRITICAL 9.8
- TI-2018-05649 Weak password recovery in Schneider Electric Embedded Web Servers in all Modicon M340… CVSS 3.0CRITICAL 9.8
- TI-2018-05669 Cross-site request forgery in Schneider Electric Embedded Web Servers in all Modicon… CVSS 3.0HIGH 8.8
- TI-2018-05652 Information disclosure in Schneider Electric Embedded Web Servers in all Modicon M340… CVSS 3.0HIGH 7.5
- TI-2018-05668 HTTP response splitting in Schneider Electric Embedded Web Servers in all Modicon M340… CVSS 3.0HIGH 7.5
- TI-2018-05650 Cross-site scripting in Schneider Electric Embedded Web Servers in all Modicon M340… CVSS 3.0MEDIUM 6.1
Sources
- CVE-2018-7833 · CVE Program
- CVE-2018-7833 · NVD
- FIRST EPSS
- GHSA-46rq-v233-vjx5 · 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