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    CVE-2023-5909

    KEPServerEX does not properly validate certificates from clients which may allow unauthenticated users to connect.

    Published:Nov 30, 2023
    Last Modified:Feb 25, 2026
    EPS:Nov 30, 2023
    EPSS Score:0.00077
    CVSS Score:7.5

    Affected Products

    Vendor
    Ge
    Product
    Industrial Gateway Server
    Vendor
    Ptc
    Product
    Keepserverex
    Vendor
    Ptc
    Product
    Opc-aggregator
    Vendor
    Ptc
    Product
    Thingworx Industrial Connectivity
    Vendor
    Ptc
    Product
    Thingworx Kepware Edge
    Vendor
    Ptc
    Product
    Thingworx Kepware Server
    Vendor
    Rockwellautomation
    Product
    Kepserver Enterprise
    Vendor
    Softwaretoolbox
    Product
    Top Server

    Exploits

    No exploit reference

    Related CVEs

    CVE-2023-5908 (CVSS 9.1) — KEPServerEX is vulnerable to a buffer overflow which may allow an attacker to crash the product being acc…
    CVE-2022-2825 (CVSS 9.8) — This vulnerability allows remote attackers to execute arbitrary code on affected installations of Kepware KEPS…
    CVE-2022-2848 (CVSS 9.1) — This vulnerability allows remote attackers to execute arbitrary code on affected installations of Kepware KEPS…
    CVE-2020-27265 (CVSS 9.8) — KEPServerEX: v6.0 to v6.9, ThingWorx Kepware Server: v6.8 and v6.9, ThingWorx Industrial Connectivity: All ver…
    CVE-2020-27263 (CVSS 9.1) — KEPServerEX: v6.0 to v6.9, ThingWorx Kepware Server: v6.8 and v6.9, ThingWorx Industrial Connectivity: All ver…
    CVE-2020-27267 (CVSS 9.1) — KEPServerEX v6.0 to v6.9, ThingWorx Kepware Server v6.8 and v6.9, ThingWorx Industrial Connectivity (all versi…

    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