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    CVE-2026-21809

    HCL BigFix Quantum Risk Analyzer has a certain validation process that provides overly descriptive error messages when it encounters malformed input which can allow an attacker to conduct more efficient reconnaissance and fine-tune automated fuzzing tools to produce valid input.

    Published:Aug 26, 2026
    Last Modified:Aug 28, 2026
    EPS:Aug 26, 2026
    EPSS Score:0.00091
    CVSS Score:3.9

    Affected Products

    Vendor
    Hclsoftware
    Product
    Bigfix Quantum Risk Analyzer

    Exploits

    No exploit reference

    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