CVE-2025-41757
Received Received - Intake
Arbitrary File Write via UBR Backup Restore Privilege Abuse

Publication date: 2026-03-09

Last updated on: 2026-03-11

Assigner: CERT VDE

Description
A low-privileged remote attacker can abuse the backup restore functionality of UBR (ubr-restore) which runs with elevated privileges and does not validate the contents of the backup archive to create or overwrite arbitrary files anywhere on the system.
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Meta Information
Published
2026-03-09
Last Modified
2026-03-11
Generated
2026-06-16
AI Q&A
2026-03-09
EPSS Evaluated
2026-06-15
NVD
CVE-2025-41757
EUVD
EUVD-2025-208360
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
mbs-solutions universal_bacnet_router_firmware to 6.0.1.0 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-22 The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
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Executive Summary

This vulnerability allows a low-privileged remote attacker to exploit the backup restore functionality of UBR (ubr-restore), which operates with elevated privileges. The attacker can abuse this feature because the system does not validate the contents of the backup archive, enabling them to create or overwrite arbitrary files anywhere on the system.

Impact Analysis

The vulnerability can have severe impacts as it allows an attacker to gain the ability to create or overwrite any file on the system with elevated privileges. This can lead to full system compromise, including the potential to execute malicious code, disrupt system operations, or steal sensitive data.

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