CVE-2025-41733: Possible malfunction credential injection

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-11-18 · updated 2026-10-18
Weakness: CWE-305

Description

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

How to fix

Upgrade to a fixed version: Metz-Connect Ewio2-Bm Firmware 2.2.0; Metz-Connect Ewio2-M-Bm Firmware 2.2.0; Metz-Connect Ewio2-M Firmware 2.2.0. Check the vendor advisory for mitigations.

References

https://certvde.com/de/advisories/VDE-2025-097

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