CVE-2022-27481: Siemens Scalance w1788-1 m12 Firmware

Medium severity, CVSS 5.3. EPSS: 0.2% chance of exploitation in the next 30 days.

A vulnerability has been identified in SCALANCE W1788-1 M12 (All versions < V3.0.0), SCALANCE W1788-2 EEC M12 (All versions < V3.0.0), SCALANCE W1788-2 M12 (All versions < V3.0.0), SCALANCE W1788-2IA M12 (All versions < V3.0.0). Affected devices do not properly handle resources of ARP requests. This could allow an attacker to cause a race condition that leads to a crash of the entire device.

Affected products

• Siemens Scalance w1788-1 m12 Firmware: before 3.0.0 (fixed in 3.0.0)
• Siemens Scalance w1788-2 Eec m12 Firmware: before 3.0.0 (fixed in 3.0.0)
• Siemens Scalance w1788-2 m12 Firmware: before 3.0.0 (fixed in 3.0.0)
• Siemens Scalance w1788-2ia m12 Firmware: before 3.0.0 (fixed in 3.0.0)

Published 2022-04-12. Last modified 2026-06-17.