CVE-2025-41755: 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…

PriorityP345medium6.5CVSS 3.1

AVNACLPRLUINSUCHINAN

EPSS

0.50%

38.9th percentile

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

4 ranges

Vendor	Product	Version range	Fixed in
mbs-solutions	universal_bacnet_router_firmware	< 6.0.1.0	6.0.1.0
mbs	ubr-01_mk_ii	>= 0.0.0 < 6.0.1.0	6.0.1.0
mbs	ubr-02	>= 0.0.0 < 6.0.1.0	6.0.1.0
mbs	ubr-lon	>= 0.0.0 < 6.0.1.0	6.0.1.0

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