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    CVE-2026-5426

    Hard-coded ASP.NET/IIS machineKey value in Digital Knowledge KnowledgeDeliver deployments prior to February 24, 2026 allows adversaries to circumvent ViewState validation mechanisms and achieve remote code execution via malicious ViewState deserialization attacks

    Published:Apr 16, 2026
    Last Modified:May 26, 2026
    EPS:Apr 16, 2026
    EPSS Score:0.00085
    CVSS Score:9.1

    Affected Products

    Vendor
    Digital Knowledge
    Product
    Knowledgedeliver

    Exploits

    https://github.com/HORKimhab/CVE-2026-5426

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-586 Object Injection

    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