What is the CVSS score of CVE-2025-41767?

CVE-2025-41767 has a CVSS 3.1 base score of 7.2 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

How to fix or mitigate CVE-2025-41767?

Within 24 hours: Inventory all Universal BACnet Router deployments and assess their network exposure. Within 7 days: Implement network segmentation to isolate affected BACnet routers from untrusted networks and restrict administrative access to authorized personnel only. Within 30 days: Monitor vendor communications for patch availability and establish a staged deployment plan; coordinate with building automation or OT teams to schedule updates during maintenance windows.

Universal Bacnet Router Firmware CVE-2025-41767

HIGH

Improper Verification of Cryptographic Signature (CWE-347)

2026-03-09 info@cert.vde.com

Authentication Bypass Universal Bacnet Router Firmware Mbs Solutions

7.2

CVSS 3.1 · NVD

View

Vulnerability Assessment

Weakness	CWE CWE-347 OWASP Top 10:2025 A04:2025 - Cryptographic Failures ASVS 5.0 V11 - Cryptography Signature verification
Impact	CVSS 7.2 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: High. User interaction: None. Exploitable via remote/network.
Exploit ScenarioDerived	A remote attacker could exploit this vulnerability to compromise the affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

No patch listed yet 0.1% exploitation probability (EPSS)

Get an e-mail when this CVE is exploited, patched or re-scored. Free account.

Alert me

AnalysisAIv1 – Mar 12, 2026

Universal Bacnet Router Firmware is affected by improper verification of cryptographic signature (CVSS 7.2).

RemediationAI

Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability (CWE-347: Improper Verification of Cryptographic Signature) exists in the wwwupdate.cgi method in the web component. A high-privileged remote attacker can fully compromise the device by abusing an update signature bypass vulnerability in the wwwupdate.cgi method in the web interface of UBR.

Know when Universal Bacnet Router Firmware gets its next vulnerability

Watch products and get an email when something new is published
Check this CVE against your own stack and servers
Exploit and PoC references, threat intelligence from 22 sources

Continue with Google Continue with GitHub

No credit card · 7-day full trial

Severity by source

NVD PRIMARY 7.2 HIGH

AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionCVE.org

A high-privileged remote attacker can fully compromise the device by abusing an update signature bypass vulnerability in the wwwupdate.cgi method in the web interface of UBR.

Executive ViewAI

Why It Matters

CVE-2025-41767 affects Universal BACnet Router firmware and allows attackers to bypass cryptographic signature verification, potentially enabling unauthorized firmware modifications or device compromise. Organizations using BACnet routers in building automation, critical infrastructure, or industrial control systems face elevated risk of unauthorized access and operational disruption until a patch becomes available.

Business Impact: High

Compensating Controls

Implement network segmentation and VLANs to isolate BACnet routers from internet-facing networks; restrict administrative access via firewall rules and require authentication for firmware updates; enable detailed logging and monitoring of all device communications for anomalous activity; consider disabling remote management features if operationally feasible; maintain offline backups of device configurations; establish change management controls requiring manual approval for any device configuration changes.

Threat Intelligence Overview

EPSS Score

0.1%

Top 83% exploitable

Data Quality

3 sources

Confidence: Low

NVD

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC No

EPSS 0.1%

Patch available No

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.