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    CVE-2017-6028

    An Insufficiently Protected Credentials issue was discovered in Schneider Electric Modicon PLCs Modicon M241, all firmware versions, and Modicon M251, all firmware versions. Log-in credentials are sent over the network with Base64 encoding leaving them susceptible to sniffing. Sniffed credentials could then be used to log into the web application.

    Published:Jun 30, 2017
    Last Modified:Apr 20, 2025
    EPS:Jun 30, 2017
    EPSS Score:0.0023
    CVSS Score:9.8

    Affected Products

    Vendor
    Schneider-electric
    Product
    Modicon M241
    Vendor
    Schneider-electric
    Product
    Modicon M241 Firmware
    Vendor
    Schneider-electric
    Product
    Modicon M251
    Vendor
    Schneider-electric
    Product
    Modicon M251 Firmware

    Exploits

    No exploit reference

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    CVE-2020-7488 (CVSS 7.5) — A CWE-319: Cleartext Transmission of Sensitive Information vulnerability exists which could leak sensitive inf…
    CVE-2020-7487 (CVSS 9.8) — A CWE-345: Insufficient Verification of Data Authenticity vulnerability exists which could allow the attacker …
    CVE-2019-6820 (CVSS 8.2) — A CWE-306: Missing Authentication for Critical Function vulnerability exists which could cause a modification …
    CVE-2017-6026 (CVSS 9.1) — A Use of Insufficiently Random Values issue was discovered in Schneider Electric Modicon PLCs Modicon M241, fi…
    CVE-2017-6030 (CVSS 6.5) — A predictable value range from previous values issue was discovered in Schneider Electric Modicon PLCs Modicon…

    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