CVE-2018-4854: Siemens Siclock TC100 Firmware

High severity, CVSS 8.8. EPSS: 2.5% chance of exploitation in the next 30 days.

A vulnerability has been identified in SICLOCK TC100 (All versions) and SICLOCK TC400 (All versions). An attacker with network access to port 69/udp could modify the administrative client stored on the device. If a legitimate user downloads and executes the modified client from the affected device, then he/she could obtain code execution on the client system.

Affected products

• Siemens Siclock TC100 Firmware: affected versions not specified
• Siemens Siclock TC400 Firmware: affected versions not specified

Published 2018-07-03. Last modified 2026-06-17.