CVE-2021-40871

    Dashboard / Vulnerabilities / CVE-2021-40871

    CVE-2021-40871

    Published: 10 Nov 2021Last Modified: 10 Mar 2026

    Summary:

    Details: An issue was discovered in Softing Industrial Automation OPC UA C++ SDK before 5.66. Remote attackers to cause a denial of service (DoS) by sending crafted messages to a OPC/UA client. The client process may crash unexpectedly because of a wrong type cast, and must be restarted.

    References: , https://industrial.softing.com/, https://industrial.softing.com/fileadmin/sof-files/pdf/ia/support/Security_Bulletin-CVE-2021-40871.pdf

    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-2021-40871 | CVE-DB