Access Control Flaw in MBS-Solutions X-Serie Gateway Firmware
CVE-2026-75167

4.3MEDIUM

Key Information:

Vendor

MBS-Solutions

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

What is CVE-2026-75167?

A vulnerability exists in the ugw-usr-edit method of the /cgi-bin/wwwugw.cgi file within MBS-Solutions X-Serie Gateway firmware. This flaw allows a remote authenticated user with a low-privileged Standard role to change the passwords for arbitrary accounts, posing a significant security risk by potentially allowing unauthorized access to user accounts. Effective patches and proper access controls are essential to mitigate the exposure from this vulnerability.

References

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

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.