CVE-2021-39509

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    CVE-2021-39509

    Published: 24 Aug 2021Last Modified: 10 Mar 2026

    Summary:

    Details: An issue was discovered in D-Link DIR-816 DIR-816A2_FWv1.10CNB05_R1B011D88210 The HTTP request parameter is used in the handler function of /goform/form2userconfig.cgi route, which can construct the user name string to delete the user function. This can lead to command injection through shell metacharacters.

    References: , https://github.com/doudoudedi/main-DIR-816_A2_Command-injection, https://www.dlink.com/en/security-bulletin/, https://github.com/doudoudedi/main-DIR-816_A2_Command-injection/blob/main/injection.md

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    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
    CVE-2021-39509 | CVE-DB