{"schemaVersion":3,"id":"CVE-2023-52891","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"A vulnerability has been identified in SIMATIC Energy Manager Basic (All versions < V7.5), SIMATIC Energy Manager PRO (All versions < V7.5), SIMATIC IPC DiagBase (All versions), SIMATIC IPC DiagMonitor (All versions), SIMIT V10 (All versions), SIMIT V11 (All versions < V11.1). Unified Automation .NET based OPC UA Server SDK before 3.2.2 used in Siemens products are affected by a similar vulnerability as documented in CVE-2023-27321 for the OPC Foundation UA .NET Standard implementation. A successful attack may lead to high load situation and memory exhaustion, and may block the server.","dates":{"published":"2024-07-09T12:04:42.619Z","modified":"2025-08-27T20:42:53.094Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":5.3,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":5.3,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":5.3,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00465,"percentile":0.38944,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.00465},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00465,"percentile":0.38944}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00465,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00465,"percentile":0.38944}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-1325","name":"Improperly Controlled Sequential Memory Allocation","description":"The product manages a group of objects or resources and performs a separate memory allocation for each object, but it does not properly limit the total amount of memory that is consumed by all of the combined objects.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/1325.html"}],"affected":[{"vendor":"siemens","product":"simatic_energy_manager_basic","name":"simatic energy manager basic","label":"simatic_energy_manager_basic","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< V7.5","noFixRecorded":false,"fixedIn":null}],"versionsText":"< V7.5","eol":null,"hubHref":"/vendor/siemens/simatic_energy_manager_basic"},{"vendor":"siemens","product":"simatic_energy_manager_pro","name":"simatic energy manager pro","label":"simatic_energy_manager_pro","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< V7.5","noFixRecorded":false,"fixedIn":null}],"versionsText":"< V7.5","eol":null,"hubHref":"/vendor/siemens/simatic_energy_manager_pro"},{"vendor":"siemens","product":"simatic_ipc_diagbase_firmware","name":"simatic ipc diagbase firmware","label":"simatic_ipc_diagbase_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":"/vendor/siemens/simatic_ipc_diagbase"},{"vendor":"siemens","product":"simatic_ipc_diagmonitor_firmware","name":"simatic ipc diagmonitor firmware","label":"simatic_ipc_diagmonitor_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":"/vendor/siemens/simatic_ipc_diagmonitor"},{"vendor":"siemens","product":"simit v10","name":"SIMIT V10","label":"simit v10","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":"/vendor/siemens/simit_v10"},{"vendor":"siemens","product":"simit v11","name":"SIMIT V11","label":"simit v11","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< V11.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< V11.1","eol":null,"hubHref":"/vendor/siemens/simit_v11"}],"affectedCount":6,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://cert-portal.siemens.com/productcert/html/ssa-088132.html","label":"cert-portal.siemens.com/productcert/html/ssa-088132.html","hostname":"cert-portal.siemens.com","tags":[]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2024-07-09T12:04:42.619Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2025-08-27T20:42:53.094Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":21,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T22:37:18.508Z","stale":false,"partial":false}}