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CVE-2025-41756

Mbs-solutions Universal Bacnet Router Firmware vulnerability

8.1 HIGHEPSS 0.34%
  1. Published9 Mar 2026

Description

A low-privileged remote attacker can exploit the ubr-editfile method in wwwubr.cgi, an undocumented and unused API endpoint to write arbitrary files on the system.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeUnchanged
ConfidentialityNone
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Affected products

Mbs-solutions Universal Bacnet Router Firmware< 6.0.1.0

Remediation

Fixed in
Mbs-solutions Universal Bacnet Router Firmware≥ 6.0.1.0

References

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Frequently asked

Is CVE-2025-41756 being actively exploited?

CVE-2025-41756 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.34%.

How severe is CVE-2025-41756?

CVE-2025-41756 has a CVSS 3.1 base score of 8.1, rated high. EPSS estimates a 0.34% probability of exploitation.

Which products are affected by CVE-2025-41756?

Affected products include Mbs-solutions Universal Bacnet Router Firmware.

How do I fix CVE-2025-41756?

Upgrade affected software to a fixed version, for example Mbs-solutions Universal Bacnet Router Firmware 6.0.1.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-41756 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.