CVE-2026-75162
Received Received - Intake

Information Disclosure in MBS-Solutions X-Serie Gateway Firmware

Publication date: 2026-09-04

Last updated on: 2026-09-04

Assigner: MITRE

Description
An information disclosure vulnerability in the opcua-configuration method of /cgi-bin/wwwugw.cgi in MBS-Solutions X-Serie Gateway firmware V6_00_05 allows any remote authenticated user, including users with the low-privileged Standard role, to retrieve the configured OPC-UA authentication credentials in cleartext via the JSON API response.

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Meta Information

Published
2026-09-04
Last Modified
2026-09-04
Generated
2026-09-04
AI Q&A
2026-09-04
EPSS Evaluated
N/A
NVD
CVE-2026-75162
EUVD
EUVD-2026-71452

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
mbs-solutions x-serie_gateway 6.0.5

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This is an information disclosure vulnerability in MBS-Solutions X-Serie Gateway firmware V6_00_05. It allows remote authenticated users, including those with low-privileged Standard roles, to retrieve OPC-UA authentication credentials in cleartext through the JSON API response of the opcua-configuration method in /cgi-bin/wwwugw.cgi.

Detection Guidance

To detect this vulnerability, check if the affected MBS-Solutions X-Serie Gateway firmware V6_00_05 is exposed on your network. Inspect HTTP responses from /cgi-bin/wwwugw.cgi for cleartext OPC-UA credentials in JSON API responses. Use network scanning tools like curl to query the endpoint: curl -X GET http://<target-ip>/cgi-bin/wwwugw.cgi?opcua-configuration. If credentials are returned in plaintext, the system is vulnerable.

Impact Analysis

An attacker could exploit this to obtain sensitive credentials, potentially leading to unauthorized access to OPC-UA systems, data breaches, or further network compromise. Even low-privileged users could retrieve these credentials.

Compliance Impact

This vulnerability could lead to non-compliance with GDPR (data protection) and HIPAA (privacy and security) due to unauthorized access to credentials and potential exposure of sensitive data.

Mitigation Strategies

Immediately restrict access to the /cgi-bin/wwwugw.cgi endpoint to authorized users only. Disable low-privileged Standard role access if possible. Review and rotate all OPC-UA authentication credentials stored in the gateway configuration. Consider upgrading to a patched firmware version if available.

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