← Vulnerability feed

Vulnerability record · CVE-2019-19281 · published 10 March 2020

CVE-2019-19281: Siemens simatic et 200sp open controller cpu 1515sp pc2 firmware uncontrolled resource consumption vulnerability

Siemens · Simatic Et 200sp Open Controller Cpu 1515sp Pc2 Firmware

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.

7.5 CVSS 3.1 High EPSS 1.7% · top 24.0% CWE-400 · Uncontrolled resource consumption
7.5CVSS 3.1 base score, v2 7.8
1.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
14Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

14 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://cert-portal.siemens.com/productcert/pdf/ssa-750824.pdf Vendor Advisory
https://www.us-cert.gov/ics/advisories/icsa-20-042-11
https://cert-portal.siemens.com/productcert/pdf/ssa-750824.pdf Vendor Advisory
https://www.us-cert.gov/ics/advisories/icsa-20-042-11

Track CVE-2019-19281 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.5CVE-2021-40365Siemens simatic s7-plcsim advanced firmware improper input validation vulnerabilityAffected devices don't process correctly certain special crafted packets sent to port 102/tcp, which could allow an attacker to cause a denial of ser…EPSS 0.90%7.5CVE-2021-37204Siemens simatic drive controller cpu 1504d tf firmware vulnerabilityA vulnerability has been identified in SIMATIC Drive Controller family (All versions < V2.9.2), SIMATIC Drive Controller family (All versions >= V2.9…EPSS 2.2%7.5CVE-2021-37205Siemens simatic drive controller cpu 1504d tf firmware memory leak vulnerabilityA vulnerability has been identified in SIMATIC Drive Controller family (All versions >= V2.9.2 < V2.9.4), SIMATIC ET 200SP Open Controller CPU 1515SP…EPSS 1.6%7.5CVE-2021-37185Siemens simatic drive controller cpu 1504d tf firmware vulnerabilityA vulnerability has been identified in SIMATIC Drive Controller family (All versions >= V2.9.2 < V2.9.4), SIMATIC ET 200SP Open Controller CPU 1515SP…EPSS 2.1%7.5CVE-2019-19300Siemens ktk ate530s firmware uncontrolled resource consumption vulnerabilityA vulnerability has been identified in Development/Evaluation Kits for PROFINET IO: EK-ERTEC 200, Development/Evaluation Kits for PROFINET IO: EK-ERT…EPSS 1.7%7.5CVE-2019-10943Siemens simatic et 200sp open controller cpu 1515sp pc firmware insufficient verification of data authenticity vulnerabilityA vulnerability has been identified in SIMATIC Drive Controller family (All versions), SIMATIC ET 200SP Open Controller CPU 1515SP PC (incl. SIPLUS v…EPSS 0.95%6.5CVE-2022-30694Siemens simatic s7-1500 software controller cross-site request forgery vulnerabilityThe login endpoint /FormLogin in affected web services does not apply proper origin checking. This could allow authenticated remote attackers to trac…EPSS 0.31%5.9CVE-2019-10929Siemens simatic et 200sp open controller cpu 1515sp pc firmware broken cryptographic algorithm vulnerabilityA vulnerability has been identified in SIMATIC CP 1626 (All versions), SIMATIC ET 200SP Open Controller CPU 1515SP PC (incl. SIPLUS variants) (All ve…EPSS 0.98%

Source: NIST National Vulnerability Database (record CVE-2019-19281), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.