CVE-2020-7593: Siemens Logo! 8 Bm Firmware

Critical severity, CVSS 9.8. EPSS: 8.7% chance of exploitation in the next 30 days.

A vulnerability has been identified in LOGO! 8 BM (incl. SIPLUS variants) (V1.81.01 - V1.81.03), LOGO! 8 BM (incl. SIPLUS variants) (V1.82.01), LOGO! 8 BM (incl. SIPLUS variants) (V1.82.02). A buffer overflow vulnerability exists in the Web Server functionality of the device. A remote unauthenticated attacker could send a specially crafted HTTP request to cause a memory corruption, potentially resulting in remote code execution.

Affected products

• Siemens Logo! 8 Bm Firmware: from 1.81.01, up to and including 1.81.03; version 1.82.01 only; version 1.82.02 only

Published 2020-07-14. Last modified 2026-06-17.