{"schemaVersion":3,"id":"CVE-2019-13940","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"A vulnerability has been identified in SIMATIC ET 200pro IM154-8 PN/DP CPU (All versions < V3.X.17), SIMATIC ET 200pro IM154-8F PN/DP CPU (All versions < V3.X.17), SIMATIC ET 200pro IM154-8FX PN/DP CPU (All versions < V3.X.17), SIMATIC ET 200S IM151-8 PN/DP CPU (All versions < V3.X.17), SIMATIC ET 200S IM151-8F PN/DP CPU (All versions < V3.X.17), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (All versions < V4.1), SIMATIC S7-300 CPU 314C-2 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 315-2 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 315F-2 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 315T-3 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 317-2 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 317F-2 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 317T-3 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 317TF-3 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 319-3 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 319F-3 PN/DP (All versions < V3.X.17), SIMATIC S7-400 PN/DP V6 and below CPU family (incl. SIPLUS variants) (All versions), SIMATIC S7-400 PN/DP V7 CPU family (incl. SIPLUS variants) (All versions), SIMATIC WinAC RTX 2010 (All versions), SIMATIC WinAC RTX F 2010 (All versions), SIPLUS ET 200S IM151-8 PN/DP CPU (All versions < V3.X.17), SIPLUS ET 200S IM151-8F PN/DP CPU (All versions < V3.X.17), SIPLUS S7-300 CPU 314C-2 PN/DP (All versions < V3.X.17), SIPLUS S7-300 CPU 315-2 PN/DP (All versions < V3.X.17), SIPLUS S7-300 CPU 315F-2 PN/DP (All versions < V3.X.17), SIPLUS S7-300 CPU 317-2 PN/DP (All versions < V3.X.17), SIPLUS S7-300 CPU 317F-2 PN/DP (All versions < V3.X.17). Affected devices contain a vulnerability that could cause a denial of service condition of the web server\nby sending specially crafted HTTP requests to ports 80/tcp and 443/tcp.\n\nBeyond the web service, no other functions or interfaces are affected by the denial of service condition.","dates":{"published":"2020-02-11T15:36:10.000Z","modified":"2024-08-05T00:05:44.018Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.5,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","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/E:P/RL:O/RC:C","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":5,"severity":"medium","vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.01702,"percentile":0.76918,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.01702},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01702,"percentile":0.76918}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01702,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01702,"percentile":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Resource Consumption","description":"The product does not properly control the allocation and maintenance of a limited resource.","type":"weakness","status":"Draft","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/400.html"}],"affected":[{"vendor":"siemens","product":"s7-1200_cpu_1211c_firmware","name":"s7-1200 cpu 1211c firmware","label":"s7-1200_cpu_1211c_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 4.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.1","eol":null,"hubHref":"/vendor/siemens/s7-1200_cpu_1211c"},{"vendor":"siemens","product":"s7-1200_cpu_1212c_firmware","name":"s7-1200 cpu 1212c firmware","label":"s7-1200_cpu_1212c_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 4.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 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