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MEDIUM · 5.3

CVE-2020-7549

A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in the Web Server on Modicon M340, Legacy Offers Modicon Quantum and Modicon Premium and associated Communication M...

Vulnerability Description

A CWE-754: Improper Check for Unusual or Exceptional Conditions 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 denial of HTTP and FTP services when a series of specially crafted requests is sent to the controller over HTTP.

CVSS Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW

Affected Products

VendorProductVersions
Schneider-ElectricModicon M340 Bmxp341000 Firmware< 3.30
Schneider-ElectricModicon M340 Bmxp341000-
Schneider-ElectricModicon M340 Bmxp342000 Firmware< 3.30
Schneider-ElectricModicon M340 Bmxp342000-
Schneider-ElectricModicon M340 Bmxp3420102 Firmware< 3.30
Schneider-ElectricModicon M340 Bmxp3420102-
Schneider-ElectricModicon M340 Bmxp3420102Cl Firmware< 3.30
Schneider-ElectricModicon M340 Bmxp3420102Cl-
Schneider-ElectricModicon M340 Bmxp342020 Firmware< 3.30
Schneider-ElectricModicon M340 Bmxp342020-
Schneider-ElectricModicon M340 Bmxp3420302 Firmware< 3.30
Schneider-ElectricModicon M340 Bmxp3420302-
Schneider-ElectricModicon M340 Bmxp3420302Cl Firmware< 3.30
Schneider-ElectricModicon M340 Bmxp3420302Cl-
Schneider-ElectricBmxnoe0100 Firmware< 3.4
Schneider-ElectricBmxnoe0100-
Schneider-ElectricBmxnoe0110 Firmware< 6.6
Schneider-ElectricBmxnoe0110-
Schneider-ElectricBmxnoc0401 FirmwareAll versions
Schneider-ElectricBmxnoc0401-

Related Weaknesses (CWE)

CWE-754

References

FAQ

What is CVE-2020-7549?

CVE-2020-7549 is a vulnerability with a CVSS score of 5.3 (MEDIUM). A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in the Web Server on Modicon M340, Legacy Offers Modicon Quantum and Modicon Premium and associated Communication M...

How severe is CVE-2020-7549?

CVE-2020-7549 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-7549?

Check the references section above for vendor advisories and patch information. Affected products include: Schneider-Electric Modicon M340 Bmxp341000 Firmware, Schneider-Electric Modicon M340 Bmxp341000, Schneider-Electric Modicon M340 Bmxp342000 Firmware, Schneider-Electric Modicon M340 Bmxp342000, Schneider-Electric Modicon M340 Bmxp3420102 Firmware.