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HIGH · 7.3

CVE-2019-6855

Incorrect Authorization vulnerability exists in EcoStruxure Control Expert (all versions prior to 14.1 Hot Fix), Unity Pro (all versions), Modicon M340 (all versions prior to V3.20) , and Modicon M580...

Vulnerability Description

Incorrect Authorization vulnerability exists in EcoStruxure Control Expert (all versions prior to 14.1 Hot Fix), Unity Pro (all versions), Modicon M340 (all versions prior to V3.20) , and Modicon M580 (all versions prior to V3.10), which could cause a bypass of the authentication process between EcoStruxure Control Expert and the M340 and M580 controllers.

CVSS Score

7.3

HIGH

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

Affected Products

VendorProductVersions
Schneider-ElectricEcostruxure Control Expert< 14.1
Schneider-ElectricUnity ProAll versions
Schneider-ElectricModicon M580 Bmep584040 Firmware< 3.10
Schneider-ElectricModicon M580 Bmep584040-
Schneider-ElectricModicon M580 Bmeh584040 Firmware< 3.10
Schneider-ElectricModicon M580 Bmeh584040-
Schneider-ElectricModicon M580 Bmep586040 Firmware< 3.10
Schneider-ElectricModicon M580 Bmep586040-
Schneider-ElectricModicon M580 Bmeh586040 Firmware< 3.10
Schneider-ElectricModicon M580 Bmeh586040-
Schneider-ElectricModicon M580 Bmep581020 Firmware< 3.10
Schneider-ElectricModicon M580 Bmep581020-
Schneider-ElectricModicon M580 Bmep582020 Firmware< 3.10
Schneider-ElectricModicon M580 Bmep582020-
Schneider-ElectricModicon M580 Bmep582040 Firmware< 3.10
Schneider-ElectricModicon M580 Bmep582040-
Schneider-ElectricModicon M580 Bmep583020 Firmware< 3.10
Schneider-ElectricModicon M580 Bmep583020-
Schneider-ElectricModicon M580 Bmep583040 Firmware< 3.10
Schneider-ElectricModicon M580 Bmep583040-

Related Weaknesses (CWE)

CWE-863

References

FAQ

What is CVE-2019-6855?

CVE-2019-6855 is a vulnerability with a CVSS score of 7.3 (HIGH). Incorrect Authorization vulnerability exists in EcoStruxure Control Expert (all versions prior to 14.1 Hot Fix), Unity Pro (all versions), Modicon M340 (all versions prior to V3.20) , and Modicon M580...

How severe is CVE-2019-6855?

CVE-2019-6855 has been rated HIGH with a CVSS base score of 7.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2019-6855?

Check the references section above for vendor advisories and patch information. Affected products include: Schneider-Electric Ecostruxure Control Expert, Schneider-Electric Unity Pro, Schneider-Electric Modicon M580 Bmep584040 Firmware, Schneider-Electric Modicon M580 Bmep584040, Schneider-Electric Modicon M580 Bmeh584040 Firmware.