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HIGH · 7.5

CVE-2019-6856

A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in Modicon M580, Modicon M340, Modicon Quantum, Modicon Premium (see security notification for specific versions) w...

Vulnerability Description

A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in Modicon M580, Modicon M340, Modicon Quantum, Modicon Premium (see security notification for specific versions) which could cause a Denial of Service when writing specific physical memory blocks using Modbus TCP.

CVSS Score

7.5

HIGH

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

Affected Products

VendorProductVersions
Schneider-ElectricModicon M580 Firmware< 2.80
Schneider-ElectricModicon M580-
Schneider-ElectricModicon M340 Firmware< 3.01
Schneider-ElectricModicon M340-
Schneider-ElectricTsxh5744M Firmware< 3.20
Schneider-ElectricTsxh5744M-
Schneider-ElectricTsxh5724M Firmware< 3.20
Schneider-ElectricTsxh5724M-
Schneider-ElectricTsxp576634M Firmware< 3.20
Schneider-ElectricTsxp576634M -
Schneider-ElectricTsxp57554M Firmware< 3.20
Schneider-ElectricTsxp57554M-
Schneider-ElectricTsxp575634M Firmware< 3.20
Schneider-ElectricTsxp575634M-
Schneider-ElectricTsxp57454M Firmware< 3.20
Schneider-ElectricTsxp57454M-
Schneider-ElectricTsxp574634M Firmware< 3.20
Schneider-ElectricTsxp574634M-
Schneider-ElectricTsxp57354M Firmware< 3.20
Schneider-ElectricTsxp57354M-

Related Weaknesses (CWE)

CWE-754

References

FAQ

What is CVE-2019-6856?

CVE-2019-6856 is a vulnerability with a CVSS score of 7.5 (HIGH). A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in Modicon M580, Modicon M340, Modicon Quantum, Modicon Premium (see security notification for specific versions) w...

How severe is CVE-2019-6856?

CVE-2019-6856 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2019-6856?

Check the references section above for vendor advisories and patch information. Affected products include: Schneider-Electric Modicon M580 Firmware, Schneider-Electric Modicon M580, Schneider-Electric Modicon M340 Firmware, Schneider-Electric Modicon M340, Schneider-Electric Tsxh5744M Firmware.