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    CVE-2021-47753

    phpKF CMS 3.00 Beta y6 contains an unauthenticated file upload vulnerability that allows remote attackers to execute arbitrary code by bypassing file extension checks. Attackers can upload a PHP file disguised as a PNG, rename it, and execute system commands through a crafted web shell parameter.

    Published:Jan 15, 2026
    Last Modified:Apr 7, 2026
    EPS:Jan 15, 2026
    EPSS Score:0.00263
    CVSS Score:9.8

    Affected Products

    Vendor
    Phpkf
    Product
    Cms
    Vendor
    Phpkf
    Product
    Phpkf

    Exploits

    https://www.exploit-db.com/exploits/50610https://www.exploit-db.com/exploits/50610

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs

    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