CVE-2021-37186

Published Sep 14, 2021

Last updated 3 years ago

Overview

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.
Source
productcert@siemens.com
NVD status
Analyzed

Risk scores

CVSS 3.1

Type
Primary
Base score
5.4
Impact score
2.5
Exploitability score
2.8
Vector string
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Severity
MEDIUM

CVSS 2.0

Type
Primary
Base score
4.8
Impact score
4.9
Exploitability score
6.5
Vector string
AV:A/AC:L/Au:N/C:P/I:P/A:N

Weaknesses

nvd@nist.gov
CWE-330
productcert@siemens.com
CWE-330

Social media

Hype score
Not currently trending

Configurations