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    CVE-2023-27334

    Softing edgeConnector Siemens ConditionRefresh Resource Exhaustion Denial-of-Service Vulnerability. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Softing edgeConnector Siemens. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of OPC UA ConditionRefresh requests. By sending a large number of requests, an attacker can consume all available resources on the server. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-20498.

    Published:May 3, 2024
    Last Modified:Aug 13, 2025
    EPS:May 3, 2024
    EPSS Score:0.00592
    CVSS Score:7.5

    Affected Products

    Vendor
    Softing
    Product
    Edgeaggregator
    Vendor
    Softing
    Product
    Edgeconnector
    Vendor
    Softing
    Product
    Opc Ua C\+\+ Software Development Kit
    Vendor
    Softing
    Product
    Secure Integration Server

    Exploits

    No exploit reference

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    CVE-2023-27336 (CVSS 7.5) — Softing edgeConnector Siemens OPC UA Server Null Pointer Dereference Denial-of-Service Vulnerability. This vul…
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    CVE-2022-37453 (CVSS 7.5) — An issue was discovered in Softing OPC UA C++ SDK before 6.10. A buffer overflow or an excess allocation happe…
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    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