CVE-2026-2250: METIS WIC Information Disclosure Flaw

CVE-2026-2250 Overview

CVE-2026-2250 is a high-severity information disclosure vulnerability affecting METIS WIC (Wireless Intelligent Collector) devices. The /dbviewer/ web endpoint is exposed without any authentication mechanism, allowing remote attackers to access and export the internal telemetry SQLite database containing sensitive operational data. Furthermore, the application is configured with debug mode enabled in production, which causes malformed requests to return verbose Django tracebacks that disclose backend source code, local file paths, and system configuration details.

Critical Impact

Remote unauthenticated attackers can exfiltrate sensitive telemetry data and gain detailed knowledge of the backend infrastructure through verbose error messages, potentially enabling further attacks.

Affected Products

• METIS WIC (Wireless Intelligent Collector) devices

Discovery Timeline

• 2026-02-11 - CVE-2026-2250 published to NVD
• 2026-02-12 - Last updated in NVD database

Technical Details for CVE-2026-2250

Vulnerability Analysis

This vulnerability combines two related security weaknesses in METIS WIC devices. The primary issue is a missing authentication control on the /dbviewer/ web endpoint, which provides direct access to the device's internal SQLite database containing telemetry data. This endpoint was likely intended for development or administrative purposes but was inadvertently left exposed in production deployments.

The secondary issue involves Django's debug mode being enabled in production, which is a common misconfiguration. When debug mode is active, the framework generates detailed error pages that include full stack traces, environment variables, local file paths, and snippets of source code when exceptions occur. This information disclosure (CWE-215) provides attackers with valuable reconnaissance data about the application's internal architecture.

Root Cause

The root cause of this vulnerability is twofold:

1. Missing Access Control: The /dbviewer/ endpoint lacks any authentication or authorization checks, allowing anonymous access to sensitive database contents. This violates the principle of least privilege and secure-by-default design patterns.

2. Insecure Debug Configuration: The Django application is deployed with DEBUG=True in its settings, which is explicitly warned against in Django's security documentation. This configuration causes the framework to display detailed error information that should never be exposed in production environments.

Attack Vector

An attacker can exploit this vulnerability remotely over the network without any authentication or user interaction. The attack sequence involves:

1. The attacker discovers a METIS WIC device exposed on the network (either directly on the internet or within an internal network after gaining initial access).

2. The attacker navigates to the /dbviewer/ endpoint, which provides direct access to the SQLite database interface without prompting for credentials.

3. Through this interface, the attacker can browse, query, and export telemetry data stored in the database, potentially including operational metrics, device configurations, and other sensitive information.

4. Additionally, the attacker can send malformed requests to trigger Django error pages, which reveal source code snippets, file system paths, installed packages, and environment configuration through verbose tracebacks.

This information can be leveraged for further attacks against the device or the broader network infrastructure.

Detection Methods for CVE-2026-2250

Indicators of Compromise

• Unexpected HTTP requests to the /dbviewer/ endpoint from external or unauthorized IP addresses
• Large data transfers originating from the METIS WIC device's web interface
• HTTP responses containing Django debug traceback patterns or error pages
• Access log entries showing repeated requests with malformed parameters designed to trigger errors

Detection Strategies

• Monitor web server access logs for requests to /dbviewer/ and related database export endpoints
• Implement network traffic analysis to detect SQLite database file transfers (look for SQLite format 3 magic bytes in HTTP responses)
• Deploy intrusion detection rules to identify Django debug traceback responses containing sensitive keywords like DJANGO_SETTINGS_MODULE, SECRET_KEY, or file path disclosures
• Establish baseline network behavior for WIC devices and alert on anomalous outbound data volumes

Monitoring Recommendations

• Configure SIEM rules to alert on any access to the /dbviewer/ endpoint
• Monitor for HTTP responses containing Django error page signatures such as Traceback (most recent call last) or Exception Type: headers
• Implement file integrity monitoring on the SQLite database to detect unauthorized access patterns
• Review web application firewall logs for requests designed to trigger application errors

How to Mitigate CVE-2026-2250

Immediate Actions Required

• Restrict network access to METIS WIC devices using firewall rules to allow only authorized management systems
• If possible, disable or block access to the /dbviewer/ endpoint at the network level using a reverse proxy or web application firewall
• Monitor for signs of exploitation by reviewing access logs for the affected endpoint
• Audit any systems that may have been accessed by attackers who obtained information from exposed devices

Patch Information

Organizations should consult the Cydome CVE-2026-2250 Advisory for the latest remediation guidance. Additionally, contact Metis Technologies directly for firmware updates or patches that address this vulnerability by implementing proper authentication on the database viewer endpoint and disabling debug mode in production deployments.

Workarounds

• Deploy a reverse proxy or web application firewall in front of METIS WIC devices to block access to the /dbviewer/ endpoint
• Implement network segmentation to isolate WIC devices from untrusted networks
• Use VPN or other secure access methods for legitimate administrative access to device management interfaces
• If device configuration allows, disable the debug endpoint or modify Django settings to set DEBUG=False

# Example firewall rule to block access to vulnerable endpoint (iptables)
# Adjust interface and IP ranges as appropriate for your environment
iptables -A INPUT -p tcp --dport 80 -m string --string "/dbviewer/" --algo bm -j DROP
iptables -A INPUT -p tcp --dport 443 -m string --string "/dbviewer/" --algo bm -j DROP