CVE Feed

    Dashboard / CVE / CVE-2019-6856

    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) which could cause a Denial of Service when writing specific physical memory blocks using Modbus TCP.

    Published:Jan 6, 2020
    Last Modified:May 29, 2026
    EPS:Jan 6, 2020
    EPSS Score:0.00491
    CVSS Score:7.5

    Affected Products

    Vendor
    Schneider-electric
    Product
    140cpu65150
    Vendor
    Schneider-electric
    Product
    140cpu65150 Firmware
    Vendor
    Schneider-electric
    Product
    140cpu65160
    Vendor
    Schneider-electric
    Product
    140cpu65160 Firmware
    Vendor
    Schneider-electric
    Product
    140cpu65160s
    Vendor
    Schneider-electric
    Product
    140cpu65160s Firmware
    Vendor
    Schneider-electric
    Product
    140cpu65260
    Vendor
    Schneider-electric
    Product
    140cpu65260 Firmware
    Vendor
    Schneider-electric
    Product
    140cpu65860
    Vendor
    Schneider-electric
    Product
    140cpu65860 Firmware
    Vendor
    Schneider-electric
    Product
    140cpu67060
    Vendor
    Schneider-electric
    Product
    140cpu67060 Firmware
    Vendor
    Schneider-electric
    Product
    140cpu67160
    Vendor
    Schneider-electric
    Product
    140cpu67160 Firmware
    Vendor
    Schneider-electric
    Product
    140cpu67160s
    Vendor
    Schneider-electric
    Product
    140cpu67160s Firmware
    Vendor
    Schneider-electric
    Product
    140cpu67260
    Vendor
    Schneider-electric
    Product
    140cpu67260 Firmware
    Vendor
    Schneider-electric
    Product
    140cpu67261
    Vendor
    Schneider-electric
    Product
    140cpu67261 Firmware
    Vendor
    Schneider-electric
    Product
    140cpu67861
    Vendor
    Schneider-electric
    Product
    140cpu67861 Firmware
    Vendor
    Schneider-electric
    Product
    Modicon M340
    Vendor
    Schneider-electric
    Product
    Modicon M340 Firmware
    Vendor
    Schneider-electric
    Product
    Modicon M580
    Vendor
    Schneider-electric
    Product
    Modicon M580 Firmware
    Vendor
    Schneider-electric
    Product
    Tsxh5724m
    Vendor
    Schneider-electric
    Product
    Tsxh5724m Firmware
    Vendor
    Schneider-electric
    Product
    Tsxh5744m
    Vendor
    Schneider-electric
    Product
    Tsxh5744m Firmware
    Vendor
    Schneider-electric
    Product
    Tsxp57104m
    Vendor
    Schneider-electric
    Product
    Tsxp57104m Firmware
    Vendor
    Schneider-electric
    Product
    Tsxp57154m
    Vendor
    Schneider-electric
    Product
    Tsxp57154m Firmware
    Vendor
    Schneider-electric
    Product
    Tsxp571634m
    Vendor
    Schneider-electric
    Product
    Tsxp571634m Firmware
    Vendor
    Schneider-electric
    Product
    Tsxp57204m
    Vendor
    Schneider-electric
    Product
    Tsxp57204m Firmware
    Vendor
    Schneider-electric
    Product
    Tsxp57254m
    Vendor
    Schneider-electric
    Product
    Tsxp57254m Firmware
    Vendor
    Schneider-electric
    Product
    Tsxp572634m
    Vendor
    Schneider-electric
    Product
    Tsxp572634m Firmware
    Vendor
    Schneider-electric
    Product
    Tsxp57304m
    Vendor
    Schneider-electric
    Product
    Tsxp57304m Firmware
    Vendor
    Schneider-electric
    Product
    Tsxp57354m
    Vendor
    Schneider-electric
    Product
    Tsxp57354m Firmware
    Vendor
    Schneider-electric
    Product
    Tsxp573634m
    Vendor
    Schneider-electric
    Product
    Tsxp573634m Firmware
    Vendor
    Schneider-electric
    Product
    Tsxp57454m
    Vendor
    Schneider-electric
    Product
    Tsxp57454m Firmware
    Vendor
    Schneider-electric
    Product
    Tsxp574634m
    Vendor
    Schneider-electric
    Product
    Tsxp574634m Firmware
    Vendor
    Schneider-electric
    Product
    Tsxp57554m
    Vendor
    Schneider-electric
    Product
    Tsxp57554m Firmware
    Vendor
    Schneider-electric
    Product
    Tsxp575634m
    Vendor
    Schneider-electric
    Product
    Tsxp575634m Firmware
    Vendor
    Schneider-electric
    Product
    Tsxp576634m
    Vendor
    Schneider-electric
    Product
    Tsxp576634m Firmware

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2021-22788 (CVSS 7.5) — A CWE-787: Out-of-bounds Write vulnerability exists that could cause denial of service when an attacker sends …
    CVE-2021-22787 (CVSS 7.5) — A CWE-20: Improper Input Validation vulnerability exists that could cause denial of service of the device when…
    CVE-2021-22785 (CVSS 7.5) — A CWE-200: Information Exposure vulnerability exists that could cause sensitive information of files located i…
    CVE-2020-7549 (CVSS 5.3) — A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in the Web Server on Modi…
    CVE-2020-7542 (CVSS 7.5) — A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in Modicon M580, Modicon …
    CVE-2020-7541 (CVSS 5.3) — A CWE-425: Direct Request ('Forced Browsing') vulnerability exists in the Web Server on Modicon M340, Legacy O…
    CVE-2020-7540 (CVSS 9.8) — A CWE-306: Missing Authentication for Critical Function vulnerability exists in the Web Server on Modicon M340…
    CVE-2020-7539 (CVSS 7.5) — A CWE-754 Improper Check for Unusual or Exceptional Conditions vulnerability exists in the Web Server on Modic…
    CVE-2020-7535 (CVSS 7.5) — A CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal' Vulnerability Type) vu…
    CVE-2020-7477 (CVSS 7.5) — A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in Quantum Ethernet Netwo…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High