Uncontrolled resource consumption in Schneider Electric Modicon M340 PLC
Priority MEDIUM 41CWE-400Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-400.
Summary
A Resource Exhaustion issue was discovered in Schneider Electric Modicon M340 PLC BMXNOC0401, BMXNOE0100, BMXNOE0110, BMXNOE0110H, BMXNOR0200H, BMXP341000, BMXP342000, BMXP3420102, BMXP3420102CL, BMXP342020, BMXP342020H, BMXP342030, BMXP3420302, BMXP3420302H, and BMXP342030H. A remote attacker could send a specially crafted set of packets to the PLC causing it to freeze, requiring the operator to physically press the reset button on the PLC in order to recover.
Why it matters now
EPSS 0.04807 92nd 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 Modicon M340 PLC | Schneider Electric Modicon M340 PLC | — | No fix listed | CNA |
- Schneider Electric Modicon M340 PLC Vendor— Affected Schneider Electric Modicon M340 PLC Fixed in — No fix listed CNA
CPE configurations NVD · 30
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:schneider-electric:bmxnoc0401_firmware:2.8:*:*:*:*:*:*:* | 2.8 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:bmxnoc0401:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:bmxnoe0100_firmware:2.8:*:*:*:*:*:*:* | 2.8 | 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:2.8:*:*:*:*:*:*:* | 2.8 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:bmxnoe0110:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:bmxnoe0110h_firmware:2.8:*:*:*:*:*:*:* | 2.8 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:bmxnoe0110h:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:bmxnor0200h_firmware:2.8:*:*:*:*:*:*:* | 2.8 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:bmxnor0200h:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
- cpe:2.3:o:schneider-electric:bmxnoc0401_firmware:2.8:*:*:*:*:*:*:* Versions 2.8 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:bmxnoe0100_firmware:2.8:*:*:*:*:*:*:* Versions 2.8 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:2.8:*:*:*:*:*:*:* Versions 2.8 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:bmxnoe0110h_firmware:2.8:*:*:*:*:*:*:* Versions 2.8 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:bmxnoe0110h:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:bmxnor0200h_firmware:2.8:*:*:*:*:*:*:* Versions 2.8 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:bmxnor0200h:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
Show 20 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:schneider-electric:modicon_m340_bmxp341000_firmware:2.8:*:*:*:*:*:*:* | 2.8 | 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:2.8:*:*:*:*:*:*:* | 2.8 | 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:2.8:*:*:*:*:*:*:* | 2.8 | 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:2.8:*:*:*:*:*:*:* | 2.8 | 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:2.8:*:*:*:*:*:*:* | 2.8 | 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_bmxp342020h_firmware:2.8:*:*:*:*:*:*:* | 2.8 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:modicon_m340_bmxp342020h:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:modicon_m340_bmxp342030_firmware:2.8:*:*:*:*:*:*:* | 2.8 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:modicon_m340_bmxp342030:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:modicon_m340_bmxp3420302_firmware:2.8:*:*:*:*:*:*:* | 2.8 | 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_bmxp3420302h_firmware:2.8:*:*:*:*:*:*:* | 2.8 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:modicon_m340_bmxp3420302h:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:modicon_m340_bmxp342030h_firmware:2.8:*:*:*:*:*:*:* | 2.8 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:modicon_m340_bmxp342030h:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
- cpe:2.3:o:schneider-electric:modicon_m340_bmxp341000_firmware:2.8:*:*:*:*:*:*:* Versions 2.8 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:2.8:*:*:*:*:*:*:* Versions 2.8 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:2.8:*:*:*:*:*:*:* Versions 2.8 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:2.8:*:*:*:*:*:*:* Versions 2.8 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:2.8:*:*:*:*:*:*:* Versions 2.8 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:modicon_m340_bmxp342020:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:modicon_m340_bmxp342020h_firmware:2.8:*:*:*:*:*:*:* Versions 2.8 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:modicon_m340_bmxp342020h:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:modicon_m340_bmxp342030_firmware:2.8:*:*:*:*:*:*:* Versions 2.8 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:modicon_m340_bmxp342030:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:modicon_m340_bmxp3420302_firmware:2.8:*:*:*:*:*:*:* Versions 2.8 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_bmxp3420302h_firmware:2.8:*:*:*:*:*:*:* Versions 2.8 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:modicon_m340_bmxp3420302h:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:modicon_m340_bmxp342030h_firmware:2.8:*:*:*:*:*:*:* Versions 2.8 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:modicon_m340_bmxp342030h:-:*:*:*:*:*:*:* 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-2017-6017
- 2026-10-03 Alias added: GHSA-4v7w-jq2v-52pw
References
More Schneider Electric Bmxnoc0401 Firmware vulnerabilities
- TI-2020-06063 Missing authentication in Web Server on Modicon M340, Legacy Offers Modicon Quantum and… CVSS 3.1CRITICAL 9.8
- TI-2020-06056 Improper authentication in Web Server on Modicon M340, Modicon Quantum and Modicon… CVSS 3.1CRITICAL 9.8
- TI-2021-05668 Out-of-bounds write in Modicon M340 CPUs: BMXP34 , Modicon M340 X80 Ethernet… CVSS 3.1HIGH 7.5
- TI-2021-05667 Improper input validation in Modicon M340 CPUs: BMXP34 , Modicon M340 X80 Ethernet… CVSS 3.1HIGH 7.5
- TI-2021-05665 Information disclosure in Modicon M340 CPUs: BMXP34 , Modicon M340 X80 Ethernet… CVSS 3.1HIGH 7.5
- TI-2020-06072 Improper check for unusual conditions in Web Server on Modicon M340, Legacy Offers… CVSS 3.1HIGH 7.5
Sources
- CVE-2017-6017 · CVE Program
- CVE-2017-6017 · NVD
- FIRST EPSS
- GHSA-4v7w-jq2v-52pw · 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