{"cve":"CVE-2019-18336","nvd":{"published":"2020-03-10T20:15:18.633","modified":"2026-06-17T02:24:51.573","status":"Modified","description":"A vulnerability has been identified in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions < V3.X.17), SIMATIC TDC CP51M1 (All versions < V1.1.8), SIMATIC TDC CPU555 (All versions < V1.1.1), SINUMERIK 840D sl (All versions < V4.8.6), SINUMERIK 840D sl (All versions < V4.94). Specially crafted packets sent to port 102/tcp (Profinet) could cause the affected device to go into defect mode. A restart is required in order to recover the system. Successful exploitation requires an attacker to have network access to port 102/tcp, with no authentication. No user interation is required. At the time of advisory publication no public exploitation of this security vulnerability was known.","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-508982.pdf","https://cert-portal.siemens.com/productcert/pdf/ssa-508982.pdf"],"products":["siemens:simatic_s7-300_cpu_312_ifm_firmware","siemens:simatic_s7-300_cpu_313_firmware","siemens:simatic_s7-300_cpu_314_firmware","siemens:simatic_s7-300_cpu_314_ifm_firmware","siemens:simatic_s7-300_cpu_315-2_dp_firmware","siemens:simatic_s7-300_cpu_315_firmware","siemens:simatic_s7-300_cpu_316-2_dp_firmware","siemens:simatic_s7-300_cpu_318-2_firmware","siemens:simatic_s7-300_cpu_firmware","siemens:simatic_tdc_cp51m1_firmware","siemens:simatic_tdc_cpu555_firmware","siemens:sinumerik_840d_sl"],"source":"nvd","synced_at":"2026-10-19T21:02:53.949909883+00:00"},"epss":{"cve":"CVE-2019-18336","score":0.01716,"percentile":0.77427,"date":"2026-10-31"},"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."]}