What is the CVSS score of CVE-2025-41758?

CVE-2025-41758 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.2%.

How to fix or mitigate CVE-2025-41758?

Within 24 hours: Identify and inventory all systems running vulnerable wwupload.cgi endpoints; isolate critical affected assets from production networks if possible. Within 7 days: Implement WAF rules to block suspicious requests to wwupload.cgi and enforce strict input validation; disable the wwupload.cgi endpoint if operationally feasible. Within 30 days: Monitor vendor advisories for patch availability; conduct forensic analysis of affected systems for signs of exploitation; develop transition plan to patched versions once available.

Universal Bacnet Router Firmware CVE-2025-41758

HIGH

Path Traversal (CWE-22)

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

Path Traversal Universal Bacnet Router Firmware Mbs Solutions

8.8

CVSS 3.1 · NVD

View

Vulnerability Assessment

Weakness	CWE CWE-22 OWASP Top 10:2025 A01:2025 - Broken Access Control ASVS 5.0 V5 - File Handling Path canonicalization, traversal prevention MITRE ATT&CK 2 techniques across 2 tactics: Discovery, Collection The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS 8.8 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: Low. User interaction: None. Exploitable via remote/network.
Exploit ScenarioDerived	A remote attacker could exploit this vulnerability to overwriting arbitrary files on the device and achieving a full system compromise.

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

No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

A low-privileged remote attacker can exploit an arbitrary file write vulnerability in the wwupload.cgi endpoint. Due to path traversal this can lead to overwriting arbitrary files on the device and achieving a full system compromise. [CVSS 8.8 HIGH]

RemediationAI

Monitor vendor advisories for a patch. Validate and sanitize file path inputs. Use allowlists. 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

Classified as CWE-22 (Path Traversal). Affects the wwupload.cgi component of Universal Bacnet Router Firmware. A low-privileged remote attacker can exploit an arbitrary file write vulnerability in the wwupload.cgi endpoint. Due to path traversal this can lead to overwriting arbitrary files on the device and achieving a full system compromise.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 8.8 HIGH

AV:N/AC:L/PR:L/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

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionCVE.org

Executive ViewAI

Why It Matters

CVE-2025-41758 is a critical vulnerability affecting the wwupload.cgi endpoint that allows remote attackers to write arbitrary files and completely compromise affected systems. Organizations using vulnerable devices face immediate risk of unauthorized access, data theft, and operational disruption. This requires urgent action given the high CVSS score and absence of available patches.

Business Impact: Severe

Compensating Controls

Disable wwupload.cgi endpoint if not essential to operations; implement Web Application Firewall (WAF) rules to block path traversal patterns (../ sequences) and restrict file write operations; enforce network segmentation to limit remote access to affected devices; implement strict input validation and sanitization; enable enhanced logging and monitoring on the endpoint; restrict network access to wwupload.cgi using firewall rules to trusted sources only.

Threat Intelligence Overview

EPSS Score

0.2%

Top 60% 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 0.2%

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.