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01 Record

CVE-2021-37186

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),

UnratedPUBLISHEDCNA: siemens
CNA base scoreUnratedNo CNA CVSS vector

02 Description

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),

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
0.35% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 29.0% of scored records. A rank, not a probability.
NVD base score
5.4 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2021-09-14 10:47Z5 YR AGO
Last updated
2024-08-04 01:16Z2 YR AGO
Reserved
2021-07-21
Assigning CNA
siemens
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-330Use of Insufficiently Random ValuesClass
Data version
5.1
Document digest
7b0142efaca5172e936ac7d4e3d2ea8b304f5c667acaec7ca37e13a4793f98af

05 Affected products

VendorProductVersionsPlatforms
SiemensLOGO! CMR2020All versions < V2.2—
SiemensLOGO! CMR2040All versions < V2.2—
SiemensSIMATIC RTU3010CAll versions < V4.0.9—
SiemensSIMATIC RTU3030CAll versions < V4.0.9—
SiemensSIMATIC RTU3031CAll versions < V4.0.9—
SiemensSIMATIC RTU3041CAll versions < V4.0.9—

06 References