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Fencer Vulns
critical 9.8

CVE-2025-41733 json

Possible malfunction credential injection

published 2025-11-18 11 mo ago modified 2026-10-18 21 d ago also EUVD-2025-197985

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 51%
public exploits
0
none known

Summary

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.

Patch / fix

  • METZ CONNECT Energy-Controlling EWIO2-M 2.2.0
  • METZ CONNECT Energy-Controlling EWIO2-M-BM 2.2.0
  • METZ CONNECT Ethernet-IO EWIO2-BM 2.2.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-25-322-05 updated cvss 9.8

METZ CONNECT EWIO2

  • METZ CONNECT Energy-Controlling Firmware <2.2.0 METZ CONNECT Ethernet-IO Firmware <2.2.0
    affected: vendor fix
  • METZ CONNECT Energy-Controlling Firmware 2.2.0 METZ CONNECT Ethernet-IO Firmware 2.2.0
    fixed

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
11 mo ago

Exploit prediction

0.65% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • METZ CONNECT Energy-Controlling EWIO2-M
  • METZ CONNECT Energy-Controlling EWIO2-M-BM
  • METZ CONNECT Ethernet-IO EWIO2-BM

Classification

Weakness
  • CWE-305 Authentication Bypass by Primary Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.