CVE-2017-12734: Siemens logo!8 Bm Fs-05 Firmware

High severity, CVSS 7.5. EPSS: 1.5% chance of exploitation in the next 30 days.

A vulnerability has been identified in LOGO! 8 BM (incl. SIPLUS variants) (All versions < V1.81.2). An attacker with network access to the integrated web server on port 80/tcp could obtain the session ID of an active user session. A user must be logged in to the web interface. Siemens recommends to use the integrated webserver on port 80/tcp only in trusted networks.

Affected products

• Siemens logo!8 Bm Fs-05 Firmware: up to and including 1.81.1

Published 2017-08-30. Last modified 2026-06-17.