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    CVE-2026-111573

    Incorrect permissions on the Checkmk Windows agent's data directory, caused by a race condition that discards the permission changes during service start, in Checkmk <2.5.0p18, <2.4.0p39, <2.3.0p52 and 2.2.0 (EOL) allow a local user to execute arbitrary code as SYSTEM by placing scripts in the agent's plugins or local folders, and to read the agent controller's private key.

    Published:Nov 6, 2026
    Last Modified:Nov 6, 2026
    EPS:Nov 6, 2026
    EPSS Score:
    CVSS Score:6.3

    Affected Products

    Vendor
    Checkmk
    Product
    Checkmk

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-277 Insecure Inherited Permissions

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    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