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    CVE-2021-40905

    The web management console of CheckMK Enterprise Edition (versions 1.5.0 to 2.0.0p9) does not properly sanitise the uploading of ".mkp" files, which are Extension Packages, making remote code execution possible. Successful exploitation requires access to the web management interface, either with valid credentials or with a hijacked session of a user with administrator role. NOTE: the vendor states that this is the intended behavior: admins are supposed to be able to execute code in this manner.

    Published:Mar 25, 2022
    Last Modified:Jul 5, 2026
    EPS:Mar 25, 2022
    EPSS Score:0.02812
    CVSS Score:8.8

    Affected Products

    Vendor
    Checkmk
    Product
    Checkmk
    Vendor
    Tribe29
    Product
    Checkmk

    Exploits

    https://github.com/Edgarloyola/CVE-2021-40905https://github.com/Edgarloyola/CVE-2021-40905https://github.com/Edgarloyola/CVE-2021-40905

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs

    Related CVEs

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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