{"id":"CVE-2023-27334","aliases":["EUVD-2023-31110","GHSA-xf44-g8mj-xfg3"],"status":"published","title":"Softing edgeConnector Siemens ConditionRefresh Resource Exhaustion Denial-of-Service Vulnerability","description":"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.\n\nThe 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.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.01442,"percentile":0.73558,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-400"],"published":"2024-05-03T01:55:56Z","modified":"2026-06-17T05:44:48Z","products":[{"vendor":"softing","product":"edgeaggregator"},{"vendor":"softing","product":"edgeconnector"},{"vendor":"softing","product":"edgeconnector siemens"},{"vendor":"softing","product":"opc_ua_c\\+\\+_software_development_kit"},{"vendor":"softing","product":"secure_integration_server"}],"references":[{"url":"https://www.zerodayinitiative.com/advisories/ZDI-23-1054/","tags":["x_research-advisory","x_transferred","Third Party Advisory"]},{"url":"https://industrial.softing.com/fileadmin/psirt/downloads/syt-2023-1.html","tags":["vendor-advisory","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-27334"},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-23-1054"},{"url":"https://github.com/advisories/GHSA-xf44-g8mj-xfg3"}],"sources":{"cve":[{"id":"CVE-2023-27334","title":"Softing edgeConnector Siemens ConditionRefresh Resource Exhaustion Denial-of-Service Vulnerability","description":"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.\n\nThe 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.","status":"published","published":"2024-05-03T01:55:56.942Z","modified":"2024-08-02T12:09:43.393Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:35:26.63732Z"}],"euvd":[{"id":"EUVD-2023-31110","description":"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.\n\nThe 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.","status":"published","published":"2024-05-03T01:55:56Z","modified":"2024-08-02T12:09:43Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T03:50:06.766939Z"}],"ghsa":[{"id":"GHSA-xf44-g8mj-xfg3","title":"Softing edgeConnector Siemens ConditionRefresh Resource Exhaustion Denial-of-Service...","description":"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.\n\nThe 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.","status":"published","published":"2024-05-03T03:30:48Z","modified":"2024-05-03T03:31:05Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:57:16.118135Z"}],"nvd":[{"id":"CVE-2023-27334","description":"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.\n\nThe 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.","status":"published","published":"2024-05-03T02:15:10.443Z","modified":"2026-06-17T05:44:48.93Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:09:11.362739Z"}]}}