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    CVE-2025-41700

    An unauthenticated attacker can trick a local user into executing arbitrary code by opening a deliberately manipulated CODESYS project file with a CODESYS development system. This arbitrary code is executed in the user context.

    Published:Dec 1, 2025
    Last Modified:Feb 23, 2026
    EPS:Dec 1, 2025
    EPSS Score:0.00038
    CVSS Score:7.8

    Affected Products

    Vendor
    Codesys
    Product
    Codesys
    Vendor
    Codesys
    Product
    Development System

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-586 Object Injection

    Related CVEs

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    CVE-2021-34596 (CVSS 6.5) — A crafted request may cause a read access to an uninitialized pointer in CODESYS V2 Runtime Toolkit 32 Bit ful…
    CVE-2021-34595 (CVSS 8.1) — A crafted request with invalid offsets may cause an out-of-bounds read or write access in CODESYS V2 Runtime T…
    CVE-2021-34586 (CVSS 7.5) — In the CODESYS V2 web server prior to V1.1.9.22 crafted web server requests may cause a Null pointer dereferen…
    CVE-2021-34585 (CVSS 7.5) — In the CODESYS V2 web server prior to V1.1.9.22 crafted web server requests can trigger a parser error. Since …
    CVE-2021-34584 (CVSS 9.1) — Crafted web server requests can be utilised to read partial stack or heap memory or may trigger a denial-of- s…
    CVE-2021-34583 (CVSS 7.5) — Crafted web server requests may cause a heap-based buffer overflow and could therefore trigger a denial-of- se…
    CVE-2021-21869 (CVSS 7.8) — An unsafe deserialization vulnerability exists in the Engine.plugin ProfileInformation ProfileData functionali…
    CVE-2021-21868 (CVSS 7.8) — An unsafe deserialization vulnerability exists in the ObjectManager.plugin Project.get_MissingTypes() function…
    CVE-2021-21867 (CVSS 7.8) — An unsafe deserialization vulnerability exists in the ObjectManager.plugin ObjectStream.ProfileByteArray funct…

    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