A vulnerability has been identified in LOGO! CMR2020 (All versions < V2.2), LOGO! CMR2040 (All versions < V2.2), SIMATIC RTU3010C (All versions < V4.0.9), SIMATIC RTU3030C (All versions < V4.0.9), SIMATIC RTU3031C (All versions < V4.0.9), SIMATIC RTU3041C (All versions < V4.0.9). The underlying TCP/IP stack does not properly calculate the random numbers used as ISN (Initial Sequence Numbers). An adjacent attacker with network access to the LAN interface could interfere with traffic, spoof the connection and gain access to sensitive information.
This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.4, indicating it requires adjacent network access with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts limited data confidentiality, limited integrity, for affected systems. Impacting 12 products from siemens, from siemens, from siemens and 9 others, organizations running these solutions should prioritize assessment and patching.
Reported in 2021, 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.
2021-09-14T11:15:25.850
2024-11-21T06:14:49.183
Modified
CVSSv3.1: 5.4 (MEDIUM)
AV:A/AC:L/Au:N/C:P/I:P/A:N
6.5
4.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | siemens | logo\!_cmr2020_firmware | < 2.2 | Yes |
| Hardware | siemens | logo\!_cmr2020 | - | No |
| Operating System | siemens | logo\!_cmr2040_firmware | < 2.2 | Yes |
| Hardware | siemens | logo\!_cmr2040 | - | No |
| Operating System | siemens | simatic_rtu3010c_firmware | < 4.0.9 | Yes |
| Hardware | siemens | simatic_rtu3010c | * | No |
| Operating System | siemens | simatic_rtu3030c_firmware | < 4.0.9 | Yes |
| Hardware | siemens | simatic_rtu3030c | * | No |
| Operating System | siemens | simatic_rtu3031c_firmware | < 4.0.9 | Yes |
| Hardware | siemens | simatic_rtu3031c | * | No |
| Operating System | siemens | simatic_rtu3041c_firmware | < 4.0.9 | Yes |
| Hardware | siemens | simatic_rtu3041c | * | No |
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.