CVE-2025-26389: Siemens OZW672 Firmware

Critical severity, CVSS 9.8. EPSS: 1% chance of exploitation in the next 30 days.

A vulnerability has been identified in OZW672 (All versions < V8.0), OZW772 (All versions < V8.0). The web service in affected devices does not sanitize the input parameters required for the `exportDiagramPage` endpoint. This could allow an unauthenticated remote attacker to execute arbitrary code with root privileges.

Affected products

• Siemens OZW672 Firmware: before 8.0 (fixed in 8.0)
• Siemens OZW772 Firmware: before 8.0 (fixed in 8.0)

Published 2025-05-13. Last modified 2026-06-17.