Vulnerability Monitor

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CVE-2019-18336

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.

Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.5, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 23 products from siemens, from siemens, from siemens and 20 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2020, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2020-03-10T20:15:18.633

Last Modified

2024-11-21T04:33:04.367

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: COMPLETE
Exploitability Score

10.0

Impact Score

6.9

Weaknesses
  • Type: Secondary
    CWE-400
  • Type: Primary
    CWE-400
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System siemens simatic_s7-300_cpu_firmware < 3.3.17 Yes
Hardware siemens simatic_s7-300_cpu - No
Operating System siemens simatic_s7-300_cpu_312_ifm_firmware < 3.3.17 Yes
Hardware siemens simatic_s7-300_cpu_312_ifm - No
Operating System siemens simatic_s7-300_cpu_313_firmware < 3.3.17 Yes
Hardware siemens simatic_s7-300_cpu_313 - No
Operating System siemens simatic_s7-300_cpu_314_firmware < 3.3.17 Yes
Hardware siemens simatic_s7-300_cpu_314 - No
Operating System siemens simatic_s7-300_cpu_314_ifm_firmware < 3.3.17 Yes
Hardware siemens simatic_s7-300_cpu_314_ifm - No
Operating System siemens simatic_s7-300_cpu_315_firmware < 3.3.17 Yes
Hardware siemens simatic_s7-300_cpu_315 - No
Operating System siemens simatic_s7-300_cpu_315-2_dp_firmware < 3.3.17 Yes
Hardware siemens simatic_s7-300_cpu_315-2_dp - No
Operating System siemens simatic_s7-300_cpu_316-2_dp_firmware < 3.3.17 Yes
Hardware siemens simatic_s7-300_cpu_316-2_dp - No
Operating System siemens simatic_s7-300_cpu_318-2_firmware < 3.3.17 Yes
Hardware siemens simatic_s7-300_cpu_318-2 - No
Application siemens sinumerik_840d_sl < 4.8.6 Yes
Application siemens sinumerik_840d_sl < 4.94 Yes
Operating System siemens simatic_tdc_cp51m1_firmware < 1.1.8 Yes
Hardware siemens simatic_tdc_cp51m1 - No
Operating System siemens simatic_tdc_cpu555_firmware < 1.1.1 Yes
Hardware siemens simatic_tdc_cpu555 - No
References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For siemens's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.