Skip to content
OpenAdvisories
Medium · 6.5 CVE-2025-41755 EUVD-2025-208356

Arbitrary Read with ubr-logread

Published Mar 9, 2026 · Updated Mar 9, 2026 · Assigned by CERTVDE

Description

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

VendorProductAffectedFixed
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

References