Vulnerability Monitor

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CVE-2021-37205

A vulnerability has been identified in SIMATIC Drive Controller family (All versions >= V2.9.2 < V2.9.4), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions >= V21.9 < V21.9.4), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (All versions >= V4.5.0 < V4.5.2), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions >= V2.9.2 < V2.9.4), SIMATIC S7-1500 Software Controller (All versions >= V21.9 < V21.9.4), SIMATIC S7-PLCSIM Advanced (All versions >= V4.0 < V4.0 SP1), SIPLUS TIM 1531 IRC (All versions < V2.3.6), TIM 1531 IRC (All versions < V2.3.6). An unauthenticated attacker could cause a denial-of-service condition in a PLC when sending specially prepared packets over port 102/tcp. A restart of the affected device is needed to restore normal operations.

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 95 products from siemens, from siemens, from siemens and 92 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2022, 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

2022-02-09T16:15:13.393

Last Modified

2024-11-21T06:14:51.527

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

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

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

8.6

Impact Score

6.9

Weaknesses
  • Type: Secondary
    CWE-401
  • Type: Secondary
    CWE-401
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System siemens simatic_drive_controller_cpu_1504d_tf_firmware < 2.9.4 Yes
Hardware siemens simatic_drive_controller_cpu_1504d_tf - No
Operating System siemens simatic_drive_controller_cpu_1507d_tf_firmware < 2.9.4 Yes
Hardware siemens simatic_drive_controller_cpu_1507d_tf - No
Operating System siemens simatic_et_200sp_open_controller_cpu_1515sp_pc2_firmware * Yes
Hardware siemens simatic_et_200sp_open_controller_cpu_1515sp_pc2 - No
Operating System siemens simatic_s7-plcsim_advanced_firmware < 4.0 Yes
Operating System siemens simatic_s7-plcsim_advanced_firmware 4.0 Yes
Hardware siemens simatic_s7-plcsim_advanced - No
Operating System siemens tim_1531_irc_firmware ≥ 2.2 Yes
Hardware siemens tim_1531_irc - No
Application siemens simatic_s7-1500_software_controller * Yes
Operating System siemens simatic_s7-1200_cpu_1211c_firmware < 4.5.2 Yes
Hardware siemens simatic_s7-1200_cpu_1211c - No
Operating System siemens simatic_s7-1200_cpu_1212c_firmware < 4.5.2 Yes
Hardware siemens simatic_s7-1200_cpu_1212c - No
Operating System siemens simatic_s7-1200_cpu_1212fc_firmware < 4.5.2 Yes
Hardware siemens simatic_s7-1200_cpu_1212fc - No
Operating System siemens simatic_s7-1200_cpu_1214fc_firmware < 4.5.2 Yes
Hardware siemens simatic_s7-1200_cpu_1214fc - No
Operating System siemens simatic_s7-1200_cpu_1214c_firmware < 4.5.2 Yes
Hardware siemens simatic_s7-1200_cpu_1214c - No
Operating System siemens simatic_s7-1200_cpu_1215fc_firmware < 4.5.2 Yes
Hardware siemens simatic_s7-1200_cpu_1215fc - No
Operating System siemens simatic_s7-1200_cpu_1215c_firmware < 4.5.2 Yes
Hardware siemens simatic_s7-1200_cpu_1215c - No
Operating System siemens simatic_s7-1200_cpu_1217c_firmware < 4.5.2 Yes
Hardware siemens simatic_s7-1200_cpu_1217c - No
Operating System siemens simatic_s7-1500_cpu_1510sp-1_firmware < 2.9.4 Yes
Hardware siemens simatic_s7-1500_cpu_1510sp-1 - No
Operating System siemens simatic_s7-1500_cpu_1510sp_firmware < 2.9.4 Yes
Hardware siemens simatic_s7-1500_cpu_1510sp - No
Operating System siemens simatic_s7-1500_cpu_1511-1_firmware < 2.9.4 Yes
Hardware siemens simatic_s7-1500_cpu_1511-1 - No
Operating System siemens simatic_s7-1500_cpu_1511c-1_firmware < 2.9.4 Yes
Hardware siemens simatic_s7-1500_cpu_1511c-1 - No
Operating System siemens simatic_s7-1500_cpu_1511f-1_firmware < 2.9.4 Yes
Hardware siemens simatic_s7-1500_cpu_1511f-1 - No
Operating System siemens simatic_s7-1500_cpu_1511t-1_firmware < 2.9.4 Yes
Hardware siemens simatic_s7-1500_cpu_1511t-1 - No
Operating System siemens simatic_s7-1500_cpu_1511tf-1_firmware < 2.9.4 Yes
Hardware siemens simatic_s7-1500_cpu_1511tf-1 - No
Operating System siemens simatic_s7-1500_cpu_1512c-1_firmware < 2.9.4 Yes
Hardware siemens simatic_s7-1500_cpu_1512c-1 - No
Operating System siemens simatic_s7-1500_cpu_1512sp-1_firmware < 2.9.4 Yes
Hardware siemens simatic_s7-1500_cpu_1512sp-1 - No
Operating System siemens simatic_s7-1500_cpu_1512spf-1_firmware < 2.9.4 Yes
Hardware siemens simatic_s7-1500_cpu_1512spf-1 - No
Operating System siemens simatic_s7-1500_cpu_1513-1_firmware < 2.9.4 Yes
Hardware siemens simatic_s7-1500_cpu_1513-1 - No
Operating System siemens simatic_s7-1500_cpu_1513f-1_firmware < 2.9.4 Yes
Hardware siemens simatic_s7-1500_cpu_1513f-1 - No
Operating System siemens simatic_s7-1500_cpu_1513r-1_firmware < 2.9.4 Yes
Hardware siemens simatic_s7-1500_cpu_1513r-1 - No
Operating System siemens simatic_s7-1500_cpu_cpu_1513prof-2_firmware < 2.9.4 Yes
Hardware siemens simatic_s7-1500_cpu_cpu_1513prof-2 - No
Operating System siemens simatic_s7-1500_cpu_cpu_1513pro-2_firmware < 2.9.4 Yes
Hardware siemens simatic_s7-1500_cpu_cpu_1513pro-2 - No
Operating System siemens simatic_s7-1500_cpu_1515-2_firmware < 2.9.4 Yes
Hardware siemens simatic_s7-1500_cpu_1515-2 - No
Operating System siemens simatic_s7-1500_cpu_1515f-2_firmware < 2.9.4 Yes
Hardware siemens simatic_s7-1500_cpu_1515f-2 - No
Operating System siemens simatic_s7-1500_cpu_1515r-2_firmware < 2.9.4 Yes
Hardware siemens simatic_s7-1500_cpu_1515r-2 - No
Operating System siemens simatic_s7-1500_cpu_1515t-2_firmware < 2.9.4 Yes
Hardware siemens simatic_s7-1500_cpu_1515t-2 - No
Operating System siemens simatic_s7-1500_cpu_1515tf-2_firmware < 2.9.4 Yes
Hardware siemens simatic_s7-1500_cpu_1515tf-2 - No
Operating System siemens simatic_s7-1500_cpu_1516pro_f_firmware < 2.9.4 Yes
Hardware siemens simatic_s7-1500_cpu_1516pro_f - No
Operating System siemens simatic_s7-1500_cpu_1516pro-2_firmware < 2.9.4 Yes
Hardware siemens simatic_s7-1500_cpu_1516pro-2 - No
Operating System siemens simatic_s7-1500_cpu_1516-3_firmware < 2.9.4 Yes
Hardware siemens simatic_s7-1500_cpu_1516-3 - No
Operating System siemens simatic_s7-1500_cpu_1516f-3_firmware < 2.9.4 Yes
Hardware siemens simatic_s7-1500_cpu_1516f-3 - No
Operating System siemens simatic_s7-1500_cpu_1516t-3_firmware < 2.9.4 Yes
Hardware siemens simatic_s7-1500_cpu_1516t-3 - No
Operating System siemens simatic_s7-1500_cpu_1516tf-3_firmware < 2.9.4 Yes
Hardware siemens simatic_s7-1500_cpu_1516tf-3 - No
Operating System siemens simatic_s7-1500_cpu_1517-3_firmware < 2.9.4 Yes
Hardware siemens simatic_s7-1500_cpu_1517-3 - No
Operating System siemens simatic_s7-1500_cpu_1517f-3_firmware < 2.9.4 Yes
Hardware siemens simatic_s7-1500_cpu_1517f-3 - No
Operating System siemens simatic_s7-1500_cpu_1517tf-3_firmware < 2.9.4 Yes
Hardware siemens simatic_s7-1500_cpu_1517tf-3 - No
Operating System siemens simatic_s7-1500_cpu_1518-4_firmware < 2.9.4 Yes
Hardware siemens simatic_s7-1500_cpu_1518-4 - No
Operating System siemens simatic_s7-1500_cpu_1518f-4_firmware < 2.9.4 Yes
Hardware siemens simatic_s7-1500_cpu_1518f-4 - No
Operating System siemens simatic_s7-1500_cpu_1518hf-4_firmware < 2.9.4 Yes
Hardware siemens simatic_s7-1500_cpu_1518hf-4 - No
Operating System siemens simatic_s7-1500_cpu_1518t-4_firmware < 2.9.4 Yes
Hardware siemens simatic_s7-1500_cpu_1518t-4 - No
Operating System siemens simatic_s7-1500_cpu_1518tf-4_firmware < 2.9.4 Yes
Hardware siemens simatic_s7-1500_cpu_1518tf-4 - 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.