{"cve":"CVE-2019-13940","nvd":{"published":"2020-02-11T16:15:14.773","modified":"2026-06-17T02:17:27.333","status":"Modified","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\r\nby sending specially crafted HTTP requests to ports 80/tcp and 443/tcp.\r\n\r\nBeyond the web service, no other functions or interfaces are affected by the denial of service condition.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-400"],"references":["https://cert-portal.siemens.com/productcert/pdf/ssa-431678.pdf","https://cert-portal.siemens.com/productcert/pdf/ssa-431678.pdf"],"products":["siemens:s7-1200_cpu_1211c_firmware","siemens:s7-1200_cpu_1212c_firmware","siemens:s7-1200_cpu_1212fc_firmware","siemens:s7-1200_cpu_1214c_firmware","siemens:s7-1200_cpu_1214fc_firmware","siemens:s7-1200_cpu_1215c_firmware","siemens:s7-1200_cpu_1215fc_firmware","siemens:s7-1200_cpu_1217c_firmware","siemens:simatic_s7-300_cpu_315-2_pn\\/dp_firmware","siemens:simatic_s7-300_cpu_315-2dp_firmware","siemens:simatic_s7-300_cpu_317-2_dp_firmware","siemens:simatic_s7-300_cpu_317-2_pn\\/dp_firmware","siemens:simatic_s7-300_cpu_319-3_pn\\/dp_firmware","siemens:simatic_s7-400_pn\\/dp_cpu_firmware","siemens:simatic_winac_rtx_\\(f\\)_2010","siemens:siplus_cpu_1211c_firmware","siemens:siplus_cpu_1212c_firmware","siemens:siplus_cpu_1214c_firmware","siemens:siplus_cpu_1215c_firmware","siemens:siplus_s7-1200_firmware","siemens:siplus_s7-300_cpu_314_firmware","siemens:siplus_s7-300_cpu_315-2_dp_firmware","siemens:siplus_s7-300_cpu_315-2_pn\\/dp_firmware","siemens:siplus_s7-300_cpu_317-2_pn\\/dp_firmware"],"source":"nvd","synced_at":"2026-10-19T21:02:53.949909883+00:00"},"epss":{"cve":"CVE-2019-13940","score":0.01702,"percentile":0.77241,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}