CVE-2025-41733: Metz-Connect EWIO2-Bm Firmware

Critical severity, CVSS 9.8. EPSS: 0.6% chance of exploitation in the next 30 days.

The commissioning wizard on the affected devices does not validate if the device is already initialized. An unauthenticated remote attacker can construct POST requests to set root credentials.

Affected products

• Metz-Connect EWIO2-Bm Firmware: before 2.2.0 (fixed in 2.2.0)
• Metz-Connect EWIO2-M-Bm Firmware: before 2.2.0 (fixed in 2.2.0)
• Metz-Connect EWIO2-M Firmware: before 2.2.0 (fixed in 2.2.0)

Published 2025-11-18. Last modified 2026-06-17.