CVE-2025-2860 Overview
CVE-2025-2860 is an information disclosure vulnerability in Arteche SaTECH BCU firmware version 2.1.3. The flaw allows an authenticated attacker with any privilege level to retrieve a .xml file containing user credential information from the device's web interface. Exploitation requires knowledge of the file path but does not depend on the user's role or permissions on the site. The vulnerability is tracked under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor and impacts substation bay control units deployed in industrial and utility environments.
Critical Impact
An authenticated adjacent-network attacker can extract user credential data from the SaTECH BCU web interface, enabling further account compromise and lateral movement within operational technology (OT) networks.
Affected Products
- Arteche SaTECH BCU firmware version 2.1.3
- Arteche SaTECH BCU hardware device
- Deployments exposing the SaTECH BCU web interface on adjacent networks
Discovery Timeline
- 2025-03-28 - CVE-2025-2860 published to the National Vulnerability Database
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-2860
Vulnerability Analysis
The SaTECH BCU web interface stores credential-related information in an XML file accessible through the embedded HTTP server. Any authenticated user, regardless of assigned role, can request this file directly by supplying the correct path. The application does not enforce authorization checks that restrict access to administrative resources, which allows low-privilege accounts to read data intended for privileged users. The exposed XML content contains credential material tied to web users of the device.
This behavior falls under [CWE-200], where sensitive resources are exposed to actors outside the intended audience. In an industrial control system context, the disclosed credentials can be used to escalate access to the bay control unit and, by extension, to substation automation functions the device manages.
Root Cause
The root cause is missing authorization enforcement on a static resource within the web application. The XML file that holds credential data is served without verifying that the requesting session belongs to a user with rights to view it. Authentication alone is treated as sufficient, which violates the principle of least privilege for the exposed endpoint.
Attack Vector
The attack requires network adjacency and a valid low-privilege account on the SaTECH BCU. An attacker on the same network segment authenticates to the web interface, then issues a direct HTTP request for the known XML path. The server returns the file contents, disclosing stored credential information. No user interaction is required and exploitation complexity is low.
No public proof-of-concept exploit or vendor-supplied technical detail is available at the time of writing. Refer to the INCIBE Security Notice for coordinated disclosure information.
Detection Methods for CVE-2025-2860
Indicators of Compromise
- HTTP GET requests to .xml resources on the SaTECH BCU web server originating from non-administrative user sessions.
- Authenticated sessions from low-privilege accounts followed by requests for configuration or user-data files.
- Outbound transfer of small XML payloads from BCU management interfaces to workstations that do not normally interact with the device.
Detection Strategies
- Inspect web server access logs on the SaTECH BCU for requests to XML files by accounts that lack administrative roles.
- Correlate login events with subsequent requests to sensitive paths and alert on role-versus-resource mismatches.
- Baseline normal engineering workstation behavior and flag deviations that involve credential-bearing files.
Monitoring Recommendations
- Enable verbose HTTP request logging on the BCU management interface and forward logs to a centralized SIEM.
- Monitor OT network traffic between engineering stations and BCUs for unusual XML file retrievals.
- Alert on repeated authentication attempts followed by direct-path resource requests indicative of file enumeration.
How to Mitigate CVE-2025-2860
Immediate Actions Required
- Inventory all Arteche SaTECH BCU devices running firmware 2.1.3 and identify their network exposure.
- Restrict access to the BCU web interface to a dedicated management VLAN reachable only by authorized engineering hosts.
- Rotate all credentials stored on affected BCU devices and audit accounts for unauthorized changes.
- Contact Arteche support to obtain the latest firmware and remediation guidance.
Patch Information
At the time of publication, no vendor patch URL is listed in the NVD entry. Coordinate remediation directly with Arteche and consult the INCIBE Security Notice for updates on fixed firmware releases.
Workarounds
- Place SaTECH BCU devices behind a firewall that restricts HTTP access to authorized management IP addresses only.
- Disable or limit low-privilege accounts on the BCU until a fixed firmware version is applied.
- Enforce network segmentation between corporate IT and OT environments per IEC 62443 zone and conduit guidance.
- Require multi-factor authentication on jump hosts used to reach OT management interfaces.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
