high
7.5
CWE
754
Advisory Published
Updated

CVE-2020-7542

First published: Fri Dec 11 2020(Updated: )

A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in Modicon M580, Modicon M340, Legacy Controllers Modicon Quantum & Modicon Premium (see security notifications for affected versions), that could cause denial of service when a specially crafted Read Physical Memory request over Modbus is sent to the controller.

Credit: cybersecurity@se.com cybersecurity@se.com

Affected SoftwareAffected VersionHow to fix
Schneider-electric Modicon M580 Bmep584040 Firmware<3.20
Schneider-electric Modicon M580 Bmep584040
Schneider-electric Modicon M580 Bmep582040 Firmware<3.20
Schneider-electric Modicon M580 Bmep582040
Schneider-electric Modicon M580 Bmep586040 Firmware<3.20
Schneider-electric Modicon M580 Bmep586040
Schneider-electric Modicon M580 Bmep585040 Firmware<3.20
Schneider-electric Modicon M580 Bmep585040
Schneider-electric Modicon M580 Bmep582020 Firmware<3.20
Schneider-electric Modicon M580 Bmep582020
Schneider-electric Modicon M580 Bmep581020 Firmware<3.20
Schneider-electric Modicon M580 Bmep581020
Schneider-electric Modicon M580 Bmep584020 Firmware<3.20
Schneider-electric Modicon M580 Bmep584020
Schneider-electric Modicon M580 Bmep583040 Firmware<3.20
Schneider-electric Modicon M580 Bmep583040
Schneider-electric Modicon M580 Bmep583020 Firmware<3.20
Schneider-electric Modicon M580 Bmep583020
Schneider-electric Bmxp341000 Firmware<3.30
Schneider-electric Bmxp341000
Schneider-electric Bmxp342000 Firmware<3.30
Schneider-electric Bmxp342000
Schneider-electric Bmxp3420102 Firmware<3.30
Schneider-electric Bmxp3420102
Schneider-electric Bmxp3420102cl Firmware<3.30
Schneider-electric Bmxp3420102cl
Schneider-electric Bmxp342020 Firmware<3.30
Schneider-electric Bmxp342020
Schneider-electric Bmxp3420302 Firmware<3.30
Schneider-electric Bmxp3420302
Schneider-electric Bmxp3420302cl Firmware<3.30
Schneider-electric Bmxp3420302cl
Schneider-electric Tsxp574634 Firmware
Schneider-electric Tsxp574634
Schneider-electric Tsxp575634 Firmware
Schneider-electric Tsxp575634
Schneider-electric Tsxp576634 Firmware
Schneider-electric Tsxp576634
Schneider-electric 140cpu65150 Firmware
Schneider-electric 140cpu65150
All of
Schneider-electric Modicon M580 Bmep584040 Firmware<3.20
Schneider-electric Modicon M580 Bmep584040
All of
Schneider-electric Modicon M580 Bmep582040 Firmware<3.20
Schneider-electric Modicon M580 Bmep582040
All of
Schneider-electric Modicon M580 Bmep586040 Firmware<3.20
Schneider-electric Modicon M580 Bmep586040
All of
Schneider-electric Modicon M580 Bmep585040 Firmware<3.20
Schneider-electric Modicon M580 Bmep585040
All of
Schneider-electric Modicon M580 Bmep582020 Firmware<3.20
Schneider-electric Modicon M580 Bmep582020
All of
Schneider-electric Modicon M580 Bmep581020 Firmware<3.20
Schneider-electric Modicon M580 Bmep581020
All of
Schneider-electric Modicon M580 Bmep584020 Firmware<3.20
Schneider-electric Modicon M580 Bmep584020
All of
Schneider-electric Modicon M580 Bmep583040 Firmware<3.20
Schneider-electric Modicon M580 Bmep583040
All of
Schneider-electric Modicon M580 Bmep583020 Firmware<3.20
Schneider-electric Modicon M580 Bmep583020
All of
Schneider-electric Modicon M340 Bmxp341000 Firmware<3.30
Schneider-electric Modicon M340 Bmxp341000
All of
Schneider-electric Modicon M340 Bmxp342000 Firmware<3.30
Schneider-electric Modicon M340 Bmxp342000
All of
Schneider-electric Modicon M340 Bmxp3420102 Firmware<3.30
Schneider-electric Modicon M340 Bmxp3420102
All of
Schneider-electric Modicon M340 Bmxp3420102cl Firmware<3.30
Schneider-electric Modicon M340 Bmxp3420102cl
All of
Schneider-electric Modicon M340 Bmxp342020 Firmware<3.30
Schneider-electric Modicon M340 Bmxp342020
All of
Schneider-electric Modicon M340 Bmxp3420302 Firmware<3.30
Schneider-electric Modicon M340 Bmxp3420302
All of
Schneider-electric Modicon M340 Bmxp3420302cl Firmware<3.30
Schneider-electric Modicon M340 Bmxp3420302cl
All of
Schneider-electric Tsxp574634 Firmware
Schneider-electric Tsxp574634
All of
Schneider-electric Tsxp575634 Firmware
Schneider-electric Tsxp575634
All of
Schneider-electric Tsxp576634 Firmware
Schneider-electric Tsxp576634
All of
Schneider-electric 140cpu65150 Firmware
Schneider-electric 140cpu65150

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Reference Links

Frequently Asked Questions

  • What is the vulnerability ID for this issue?

    The vulnerability ID for this issue is CVE-2020-7542.

  • What is the severity of CVE-2020-7542?

    The severity of CVE-2020-7542 is high (7.5).

  • Which software versions are affected by CVE-2020-7542?

    The Modicon M580, Modicon M340, Legacy Controllers Modicon Quantum & Modicon Premium are affected by CVE-2020-7542 (see security notifications for affected versions).

  • What is the risk of CVE-2020-7542?

    CVE-2020-7542 poses a risk of denial of service when a specially crafted Read Physical Memor... request is processed.

  • Where can I find more information about CVE-2020-7542?

    You can find more information about CVE-2020-7542 at this URL: https://www.se.com/ww/en/download/document/SEVD-2020-343-08/

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