CVE-2025-41759 Use of wildcard (“*” or “all”) in Block list
Administrators using wildcard blocklist values fail to block networks, allowing unauthorized access due to silent misconfiguration.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-41759?
CVE-2025-41759 is a medium-severity vulnerability in MBS UBR-01 Mk II, published on 9 Mar 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
An administrator may attempt to block all networks by specifying "\*" or "all" as the network identifier. However, these values are not supported and do not trigger any validation error. Instead, they are silently interpreted as network 0 which results in no networks being blocked at all.
Weakness: CWE-636
Which versions are affected by CVE-2025-41759?
It affects 1 product.
Products include Mbs-Solutions Universal Bacnet Router Firmware.
How do I fix CVE-2025-41759?
No fix has been published for CVE-2025-41759 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-41759 being exploited?
There is no known exploitation of CVE-2025-41759 in the wild and no public exploit code.
Other vulnerabilities in MBS UBR-01 Mk II
Sources
Also known as GHSA-rmhq-3pj8-86qj.