CVE-2025-41766 Details
Description
A low-privileged remote attacker can trigger a stack-based buffer overflow via a crafted HTTP POST request using the ubr-network method resulting in full device compromise.
A stack-based buffer overflow vulnerability has been identified in the MBS Universal BACnet Router's UBR web GUI. This vulnerability allows low-privileged remote attackers to send crafted HTTP POST requests using the 'ubr-network' method, leading to full device compromise. The issue arises because the server-side code improperly handles user-controlled data, allowing attackers to overwrite the return address on the stack and execute arbitrary code. The vulnerability affects both the 32 MB and 64 MB RAM versions of the UBR router.
Users are advised to update to the latest UBR firmware version 6.0.1.0, which addresses this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 9, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://www.mbs-solutions.de/mbs-2025-0001 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-787 | Out-of-bounds Write | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| mbs-solutions universal bacnet router firmware | < 6.0.1.0 |
CPE
Remediation
| |
| mbs-solutions ubr-01 mk ii | All versions |
CPE
Remediation
| |
| mbs-solutions ubr-02 | All versions |
CPE
Remediation
| |
| mbs-solutions ubr-lon | All versions |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Mar 11, 2026 | Initial Analysis | [email protected] |
| Mar 9, 2026 | New CVE Received | [email protected] |