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, SIMATIC RTU3031C All versions V4.0.9, SIMATIC RTU3041C All versions V4.0.9. The underlying TCP/IP stack does not...

Siemens LOGO! CMR and SIMATIC RTU 3000 Use of Insufficiently Random Values (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, SIMATIC RTU3031C All versions V4.0.9, SIMATIC RTU3041C All versions V4.0.9. The underlying TCP/IP stack does not...

CVE-2021-37186

Summary of CVE-2021-37186 : Siemens LOGO! CMR2020/CMR2040 and SIMATIC RTU3000 family implement an insufficiently random Initial Sequence Number (ISN) generator in their TCP/IP stack. This can allow an adjacent attacker with LAN access to interfere with traffic, spoof connections, and potentially ...

Siemens LOGO! CMR and SIMATIC RTU 3000 (Update A)

1. EXECUTIVE SUMMARY CVSS v3 5.4 ATTENTION: Low attack complexity Vendor: Siemens Equipment: LOGO! CMR, SIMATIC RTU 3000 Vulnerability: Use of Insufficiently Random Values 2. UPDATE INFORMATION This updated advisory is a follow-up to the original advisory titled ICSA-21-257-13 Siemens LOGO! CMR...