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    CVE-2026-35556

    OpenPLC_V3 is vulnerable to a Plaintext Storage of a Password vulnerability that could allow an attacker to retrieve credentials and access sensitive information.

    Published:Apr 9, 2026
    Last Modified:Apr 16, 2026
    EPS:Apr 9, 2026
    EPSS Score:0.00054
    CVSS Score:7.5

    Affected Products

    Vendor
    Openplcproject
    Product
    Openplc V3
    Vendor
    Openplcproject
    Product
    Openplc V3 Firmware

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-256 Plaintext Storage of a Password

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-35063 (CVSS 8.7) — OpenPLC_V3 REST API endpoint checks for JWT presence but never verifies the caller's role. Any authenticated u…
    CVE-2026-28205 (CVSS 9.2) — OpenPLC_V3 is vulnerable to an Initialization of a Resource with an Insecure Default vulnerability which could…
    CVE-2021-47770 (CVSS 8.6) — OpenPLC v3 contains an authenticated remote code execution vulnerability that allows attackers with valid cred…
    CVE-2025-13970 (CVSS 7) — OpenPLC_V3 is vulnerable to a cross-site request forgery (CSRF) attack due to the absence of proper CSRF vali…
    CVE-2025-53476 (CVSS 5.3) — A denial of service vulnerability exists in the ModbusTCP server functionality of OpenPLC _v3 a931181e8b81e36f…
    CVE-2025-34226 (CVSS 7.1) — OpenPLC Runtime v3 contains an input validation flaw in the /upload-program-action endpoint: the epoch_time fi…
    CVE-2025-54811 (CVSS 6.1) — OpenPLC_V3 has a vulnerability in the enipThread function that occurs due to the lack of a return value. This …
    CVE-2025-54962 (CVSS 6.4) — /edit-user in webserver in OpenPLC Runtime 3 through 9cd8f1b allows authenticated users to upload arbitrary fi…

    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