Missing authentication in Web Server on Modicon M340, Legacy Offers Modicon Quantum and…
Priority MEDIUM 47CWE-306Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-306.
Summary
A CWE-306: Missing Authentication for Critical Function vulnerability exists in the Web Server on Modicon M340, Legacy Offers Modicon Quantum and Modicon Premium and associated Communication Modules (see security notification for affected versions), that could cause unauthenticated command execution in the controller when sending special HTTP requests.
Why it matters now
EPSS 0.02317 83rd 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 |
|---|---|---|---|---|---|
| — | Web Server on Modicon M340, Legacy Offers Modicon Quantum and Modicon Premium and associated Communication Modules (see security notification for affected versions) | Web Server on Modicon M340, Legacy Offers Modicon Quantum and Modicon Premium and associated Communication Modules (see security notification for affected versions) | — | No fix listed | CNA |
- Web Server on Modicon M340, Legacy Offers Modicon Quantum and Modicon Premium and associated Communication Modules (see security notification for affected versions) Vendor— Affected Web Server on Modicon M340, Legacy Offers Modicon Quantum and Modicon Premium and associated Communication Modules (see security notification for affected versions) Fixed in — No fix listed CNA
CPE configurations NVD · 46
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:schneider-electric:modicon_m340_bmxp341000_firmware:*:*:*:*:*:*:*:* | before 3.30 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:modicon_m340_bmxp341000:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:modicon_m340_bmxp342000_firmware:*:*:*:*:*:*:*:* | before 3.30 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:modicon_m340_bmxp342000:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:modicon_m340_bmxp3420102_firmware:*:*:*:*:*:*:*:* | before 3.30 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:modicon_m340_bmxp3420102:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:modicon_m340_bmxp3420102cl_firmware:*:*:*:*:*:*:*:* | before 3.30 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:modicon_m340_bmxp3420102cl:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:modicon_m340_bmxp342020_firmware:*:*:*:*:*:*:*:* | before 3.30 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:modicon_m340_bmxp342020:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
- cpe:2.3:o:schneider-electric:modicon_m340_bmxp341000_firmware:*:*:*:*:*:*:*:* Versions before 3.30 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:modicon_m340_bmxp341000:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:modicon_m340_bmxp342000_firmware:*:*:*:*:*:*:*:* Versions before 3.30 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:modicon_m340_bmxp342000:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:modicon_m340_bmxp3420102_firmware:*:*:*:*:*:*:*:* Versions before 3.30 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:modicon_m340_bmxp3420102:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:modicon_m340_bmxp3420102cl_firmware:*:*:*:*:*:*:*:* Versions before 3.30 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:modicon_m340_bmxp3420102cl:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:modicon_m340_bmxp342020_firmware:*:*:*:*:*:*:*:* Versions before 3.30 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:modicon_m340_bmxp342020:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
Show 36 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:schneider-electric:modicon_m340_bmxp3420302_firmware:*:*:*:*:*:*:*:* | before 3.30 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:modicon_m340_bmxp3420302:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:modicon_m340_bmxp3420302cl_firmware:*:*:*:*:*:*:*:* | before 3.30 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:modicon_m340_bmxp3420302cl:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:bmxnoe0100_firmware:*:*:*:*:*:*:*:* | before 3.3 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:bmxnoe0100:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:bmxnoe0110_firmware:*:*:*:*:*:*:*:* | before 6.5 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:bmxnoe0110:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:140noe77101_firmware:*:*:*:*:*:*:*:* | before 7.1 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:140noe77101:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:140noe77111_firmware:*:*:*:*:*:*:*:* | before 7.1 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:140noe77111:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:140cpu65150_firmware:*:*:*:*:*:*:*:* | before 6.1 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:140cpu65150:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:140cpu65160_firmware:*:*:*:*:*:*:*:* | before 6.1 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:140cpu65160:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:140noc78000_firmware:*:*:*:*:*:*:*:* | before 1.74 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:140noc78000:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:140noc78100_firmware:*:*:*:*:*:*:*:* | before 1.74 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:140noc78100:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:140noc77101_firmware:*:*:*:*:*:*:*:* | before 1.08 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:140noc77101:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:tsxp574634_firmware:*:*:*:*:*:*:*:* | before 6.1 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:tsxp574634:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:tsxp575634_firmware:*:*:*:*:*:*:*:* | before 6.1 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:tsxp575634:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:tsxp576634_firmware:*:*:*:*:*:*:*:* | before 6.1 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:tsxp576634:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:tsxety4103_firmware:*:*:*:*:*:*:*:* | before 6.2 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:tsxety4103:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:tsxety5103_firmware:*:*:*:*:*:*:*:* | before 6.4 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:tsxety5103:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:bmxnoc0401_firmware:*:*:*:*:*:*:*:* | before 2.10 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:bmxnoc0401:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:bmxnor200h_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:bmxnor200h:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
- cpe:2.3:o:schneider-electric:modicon_m340_bmxp3420302_firmware:*:*:*:*:*:*:*:* Versions before 3.30 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:modicon_m340_bmxp3420302:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:modicon_m340_bmxp3420302cl_firmware:*:*:*:*:*:*:*:* Versions before 3.30 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:modicon_m340_bmxp3420302cl:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:bmxnoe0100_firmware:*:*:*:*:*:*:*:* Versions before 3.3 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:bmxnoe0100:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:bmxnoe0110_firmware:*:*:*:*:*:*:*:* Versions before 6.5 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:bmxnoe0110:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:140noe77101_firmware:*:*:*:*:*:*:*:* Versions before 7.1 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:140noe77101:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:140noe77111_firmware:*:*:*:*:*:*:*:* Versions before 7.1 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:140noe77111:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:140cpu65150_firmware:*:*:*:*:*:*:*:* Versions before 6.1 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:140cpu65150:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:140cpu65160_firmware:*:*:*:*:*:*:*:* Versions before 6.1 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:140cpu65160:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:140noc78000_firmware:*:*:*:*:*:*:*:* Versions before 1.74 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:140noc78000:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:140noc78100_firmware:*:*:*:*:*:*:*:* Versions before 1.74 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:140noc78100:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:140noc77101_firmware:*:*:*:*:*:*:*:* Versions before 1.08 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:140noc77101:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:tsxp574634_firmware:*:*:*:*:*:*:*:* Versions before 6.1 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:tsxp574634:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:tsxp575634_firmware:*:*:*:*:*:*:*:* Versions before 6.1 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:tsxp575634:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:tsxp576634_firmware:*:*:*:*:*:*:*:* Versions before 6.1 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:tsxp576634:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:tsxety4103_firmware:*:*:*:*:*:*:*:* Versions before 6.2 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:tsxety4103:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:tsxety5103_firmware:*:*:*:*:*:*:*:* Versions before 6.4 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:tsxety5103:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:bmxnoc0401_firmware:*:*:*:*:*:*:*:* Versions before 2.10 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:bmxnoc0401:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:bmxnor200h_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:bmxnor200h:-:*:*:*:*:*:*:* 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-2020-7540
- 2026-10-03 Alias added: GHSA-x5fh-cqhm-x62g
References
More Schneider Electric 140cpu65150 Firmware vulnerabilities
- TI-2018-05250 Hard-coded credentials in Schneider Electric Modicon Premium, Modicon Quantum, Modicon… CVSS 3.0CRITICAL 9.8
- TI-2018-05604 Improper input validation in Schneider Electric Modicon M340, Modicon Premium, Modicon… CVSS 3.0CRITICAL 9.8
- TI-2018-05251 Vulnerable hash algorithms exists in Schneider Electric's Modicon Premium, Modicon… CVSS 3.0CRITICAL 9.8
- TI-2018-05603 Improper authentication in Schneider Electric Modicon M340, Modicon Premium, Modicon… CVSS 3.0CRITICAL 9.8
- TI-2018-05249 Out-of-bounds write in Schneider Electric Modicon Quantum CVSS 3.0HIGH 8.8
- TI-2020-06000 Improper check for unusual conditions in Modicon Quantum Ethernet Network module and… CVSS 3.1HIGH 7.5
Sources
- CVE-2020-7540 · CVE Program
- CVE-2020-7540 · NVD
- FIRST EPSS
- GHSA-x5fh-cqhm-x62g · 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