CVE-2021-46304: Siemens CP-8000 Master Module With I/o -25/+70 Firmware

High severity, CVSS 7.5. EPSS: 0.7% chance of exploitation in the next 30 days.

A vulnerability has been identified in CP-8000 MASTER MODULE WITH I/O -25/+70°C (All versions), CP-8000 MASTER MODULE WITH I/O -40/+70°C (All versions), CP-8021 MASTER MODULE (All versions), CP-8022 MASTER MODULE WITH GPRS (All versions). The component allows to activate a web server module which provides unauthenticated access to its web pages. This could allow an attacker to retrieve debug-level information from the component such as internal network topology or connected systems.

Affected products

• Siemens CP-8000 Master Module With I/o -25/+70 Firmware: any version
• Siemens CP-8000 Master Module With I/o -40/+70 Firmware: any version
• Siemens CP-8021 Master Module Firmware: any version
• Siemens CP-8022 Master Module With Gprs Firmware: any version

Published 2022-08-10. Last modified 2026-06-17.