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CVE-2021-37186

Published: Sep 14, 2021Updated: Nov 21, 2024 Sources: CVE List NVD csafCWE-330
5.4MEDIUM
NVD MITRE
EPSS Score
0.4%
Top 71.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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), 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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:AAC:LPR:NUI:NS:UC:LI:LA:N
Exploitability
AV:AAttack Vector
Adjacent
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-330

Affected Products

Siemens
commercial·DEaka siemens ag
LOGO! CMR2020
ICS / OT / IoT
LOGO! CMR2040
ICS / OT / IoT
SIMATIC RTU3010C
ICS / OT / IoT
SIMATIC RTU3030C
ICS / OT / IoT
SIMATIC RTU3031C
ICS / OT / IoT
SIMATIC RTU3041C
ICS / OT / IoT
logo\! cmr2020 firmware
ICS / OT / IoT
logo\! cmr2040 firmware
ICS / OT / IoT
and 4 more affected products View all →

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

1 technique
Credential Access
View detailed technique mapping

References

https://cert-portal.siemens.com/productcert/pdf/ssa-316383.pdf
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/csaf/ssa-316383.json
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/txt/ssa-316383.txt
cert-portal.siemens.com
and 11 more references View all →

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