CVE-2025-41673Network attack vector

Authenticated command execution via send_sms input

Published Jul 21, 2025 · Updated Nov 3, 2025

OS command injection in REX 100 and mbNET.mini firmware before 2.3.3 allows remote authenticated users to execute system commands. The send_sms action places special elements from POST request data into an operating-system command without neutralizing them. High-privilege access to the device interface is required, and successful injection grants full control of the router.

CVSS severity7.2
High
EPSS probability0.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in REX 100 and mbNET.mini firmware before 2.3.3 allows remote authenticated users to execute system commands. The send_sms action places special elements from POST request data into an operating-system command without neutralizing them. High-privilege access to the device interface is required, and successful injection grants full control of the router.

The record

CVE
CVE-2025-41673
Published
Jul 21, 2025
Updated
Nov 3, 2025
Vendor
Helmholz GmbH & Co. KG
Product
REX 100
Classifications
CWE-78, T1059
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jul 21, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.0.0 <2.3.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Helmholz GmbH & Co. KG · REX 100version=0.0.0 <2.3.3
MB connect line · mbNET.miniversion=0.0.0 <2.3.3

Published CVSS scores

7.2CERT@VDECVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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