Is CVE-2026-75164 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-75164 being exploited in the wild.

How severe is CVE-2026-75164?

Medium severity, with a CVSS score of 6.5, published 4 September 2026.

Which products and versions are affected?

MBS GmbH X-Serie Gateway V6_00_05.

Is there a fix for CVE-2026-75164?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-75164 attacked?

It is attacked over the network.

Am I affected by CVE-2026-75164?

Check whether you run MBS GmbH X-Serie Gateway at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-75164: MBS X-Serie Gateway arbitrary file read in ugwdownload.cgi

CVE-2026-75164 · Severity: medium · CVSS 6.5 · Published 2026-09-04

The MBS X-Serie Gateway is a universal industrial communication gateway used to bridge different building automation protocols and reduce integration costs. An authenticated attacker with basic user privileges can read arbitrary files from the gateway's filesystem through a web interface vulnerability, potentially exposing sensitive configuration data, credentials, or system information critical to facility operations.

Technologies: MBS GmbH X-Serie Gateway. Vendors: MBS GmbH.

Quick answers

Is CVE-2026-75164 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-75164 being exploited in the wild.
How severe is CVE-2026-75164?: Medium severity, with a CVSS score of 6.5, published 4 September 2026.
Which products and versions are affected?: MBS GmbH X-Serie Gateway V6_00_05.
Is there a fix for CVE-2026-75164?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-75164 attacked?: It is attacked over the network.
Am I affected by CVE-2026-75164?: Check whether you run MBS GmbH X-Serie Gateway at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is an arbitrary file read flaw in the /cgi-bin/ugwdownload.cgi endpoint of MBS X-Serie Gateway firmware V6_00_05. An authenticated remote attacker with a low-privileged Standard role can exploit an unsafe file parameter to retrieve arbitrary files from the device filesystem. The attack requires valid authentication credentials but no elevated privileges. The vulnerability allows full filesystem disclosure, which could lead to exposure of configuration files, private keys, or other sensitive data stored on the gateway. A security update addressing this issue is required.

Affected products

MBS GmbH X-Serie Gateway V6_00_05

Timeline

2026-09-04: disclosed

References

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