Arbitrary File Upload Vulnerability in MBS-Solutions X-Serie Gateway Firmware
CVE-2026-75169

8.8HIGH

Key Information:

Vendor

MBS-Solutions

Status
X-Serie Gateway Firmware
Vendor
CVE Published:
4 September 2026

What is CVE-2026-75169?

An arbitrary file upload vulnerability exists in the MBS-Solutions X-Serie Gateway firmware, specifically within the /cgi-bin/ugwupload.cgi endpoint. This flaw allows an authenticated user with administrative privileges to upload files containing arbitrary content to predetermined file paths on the system. As a consequence, malicious actors could potentially exploit this vulnerability to perform unauthorized actions, access sensitive information, or compromise the integrity of the affected systems.

References

https://en.mbs-solutions.de/mbs
https://en.mbs-solutions.de/xserie
https://github.com/SilviaMun/vulnerability-research/tree/...

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.