CVE-2025-41763 Unchecked role in wwwdnload.cgi
A low-privileged remote attacker can bypass authorization checks to download sensitive administrative resources, including system backups and certificates, from MBS UBR routers.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-41763?
CVE-2025-41763 is a medium-severity missing authorization vulnerability in MBS UBR-01 Mk II, published on 9 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A low‑privileged remote attacker can directly interact with the wwwdnload.cgi endpoint to download any resource available to administrators, including system backups and certificate request files.
Weakness: CWE-497
Which versions are affected by CVE-2025-41763?
It affects 1 product.
Products include Mbs-Solutions Universal Bacnet Router Firmware.
How do I fix CVE-2025-41763?
No fix has been published for CVE-2025-41763 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2025-41763 being exploited?
There is no known exploitation of CVE-2025-41763 in the wild and no public exploit code.
Other vulnerabilities in MBS UBR-01 Mk II
Sources
Also known as GHSA-p57h-7v9g-8v96.