CVE-2025-41757
Arbitrary File Write via UBR Backup Restore Privilege Abuse
Publication date: 2026-03-09
Last updated on: 2026-03-11
Assigner: CERT VDE
Description
Description
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| mbs-solutions | universal_bacnet_router_firmware | to 6.0.1.0 (exc) |
Helpful Resources
Exploitability
| 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. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
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.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know