Improper handling of exceptional conditions in Modicon M580, Modicon M340, and Modicon…
Priority LOW 24CWE-755Published · Updated
Key facts
- Attack vector
- Network
- 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
A CWE-755: Improper Handling of Exceptional Conditions vulnerability exists in Modicon M580, Modicon M340, Modicon BMxCRA and 140CRA modules (all firmware versions), which could cause a Denial of Service attack on the PLC when upgrading the firmware with a missing web server image inside the package using FTP protocol.
Why it matters now
EPSS 0.00959 61st 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 |
|---|---|---|---|---|---|
| — | Modicon M580, Modicon M340, and Modicon BMxCRA / 140CRA modules (see notification for version info) | Modicon M580, Modicon M340, and Modicon BMxCRA / 140CRA modules (see notification for version info) | — | No fix listed | CNA |
- Modicon M580, Modicon M340, and Modicon BMxCRA / 140CRA modules (see notification for version info) Vendor— Affected Modicon M580, Modicon M340, and Modicon BMxCRA / 140CRA modules (see notification for version info) Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:schneider-electric:modicon_m580_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:modicon_m580:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:modicon_m340_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:modicon_m340:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:modicon_bmxcra_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:modicon_bmxcra:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:modicon_140cra_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:modicon_140cra:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
- cpe:2.3:o:schneider-electric:modicon_m580_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:modicon_m580:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:modicon_m340_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:modicon_m340:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:modicon_bmxcra_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:modicon_bmxcra:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:modicon_140cra_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:modicon_140cra:-:*:*:*:*:*:*:* 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-2019-6842
- 2026-10-03 Alias added: GHSA-c474-f694-3xx6
References
More Schneider Electric Modicon 140cra Firmware vulnerabilities
- TI-2019-04874 Improper handling of exceptional conditions in Modicon M580, Modicon M340, and Modicon… CVSS 3.1MEDIUM 4.9
- TI-2019-04879 Cleartext transmission of sensitive information in Modicon M580, Modicon M340, Modicon… CVSS 3.1MEDIUM 6.5
- TI-2019-04880 Improper handling of exceptional conditions in Modicon M580, Modicon M340, and Modicon… CVSS 3.1MEDIUM 4.9
- TI-2019-04877 Improper handling of exceptional conditions in Modicon M580, Modicon M340, and Modicon… CVSS 3.1MEDIUM 4.9
- TI-2019-04876 Improper handling of exceptional conditions in Modicon M580, Modicon M340, and Modicon… CVSS 3.1MEDIUM 4.9
Sources
- CVE-2019-6842 · CVE Program
- CVE-2019-6842 · NVD
- FIRST EPSS
- GHSA-c474-f694-3xx6 · 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