{"cve":"CVE-2019-19281","nvd":{"published":"2020-03-10T20:15:18.897","modified":"2026-06-17T02:26:25.493","status":"Modified","description":"A vulnerability has been identified in SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions >= V2.5 and < V20.8), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions >= V2.5 and < V2.8), SIMATIC S7-1500 Software Controller (All versions >= V2.5 and < V20.8). Affected devices contain a vulnerability that allows an unauthenticated attacker to trigger a Denial-of-Service condition. The vulnerability can be triggered if specially crafted UDP packets are sent to the device. The security vulnerability could be exploited by an attacker with network access to the affected systems. Successful exploitation requires no system privileges and no user interaction. An attacker could use the vulnerability to compromise the device availability.","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-750824.pdf","https://www.us-cert.gov/ics/advisories/icsa-20-042-11","https://cert-portal.siemens.com/productcert/pdf/ssa-750824.pdf","https://www.us-cert.gov/ics/advisories/icsa-20-042-11"],"products":["siemens:simatic_et_200sp_open_controller_cpu_1515sp_pc2_firmware","siemens:simatic_s7-1500_cpu_1507s_f_firmware","siemens:simatic_s7-1500_cpu_1507s_firmware","siemens:simatic_s7-1500_cpu_1508s_f_firmware","siemens:simatic_s7-1500_cpu_1508s_firmware","siemens:simatic_s7-1500_cpu_1511-1_pn_firmware","siemens:simatic_s7-1500_cpu_1513-1_pn_firmware","siemens:simatic_s7-1500_cpu_1515-2_pn_firmware","siemens:simatic_s7-1500_cpu_1516-3_dp_firmware","siemens:simatic_s7-1500_cpu_1516-3_pn_firmware","siemens:simatic_s7-1500_cpu_1517-3_dp_firmware","siemens:simatic_s7-1500_cpu_1517-3_pn_firmware","siemens:simatic_s7-1500_cpu_1518-4_dp_firmware","siemens:simatic_s7-1500_cpu_1518-4_pn_firmware"],"source":"nvd","synced_at":"2026-10-19T21:02:53.949909883+00:00"},"epss":{"cve":"CVE-2019-19281","score":0.01677,"percentile":0.76895,"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."]}