CVE-2025-41755: Mbs-Solutions Universal Bacnet Router Firmware

Medium severity, CVSS 6.5. EPSS: 0.5% chance of exploitation in the next 30 days.

A low-privileged remote attacker can exploit the ubr-logread method in wwwubr.cgi to read arbitrary files on the system. The endpoint accepts a parameter specifying the log file to open (e.g., /tmp/weblog{some_number}), but this parameter is not properly validated, allowing an attacker to modify it to reference any file and retrieve its contents.

Affected products

• Mbs-Solutions Universal Bacnet Router Firmware: before 6.0.1.0 (fixed in 6.0.1.0)

Published 2026-03-09. Last modified 2026-06-17.