CVE-2025-2861 in saTECH BCU
Summary
by MITRE • 03/28/2025
SaTECH BCU in its firmware version 2.1.3 uses the HTTP protocol. The use of the HTTP protocol for web browsing has the problem that information is exchanged in unencrypted text. Since sensitive data such as credentials are exchanged, an attacker could obtain them and log in legitimately.
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Analysis
by VulDB Data Team • 10/10/2025
The SaTECH BCU device presents a critical security vulnerability through its reliance on the unencrypted HTTP protocol within firmware version 2.1.3. This configuration fundamentally compromises the confidentiality and integrity of data transmitted between the device and its users or management systems. The vulnerability stems from the device's failure to implement secure communication channels, leaving all transmitted information susceptible to interception and manipulation. The use of HTTP protocol exposes the device to man-in-the-middle attacks where attackers can easily capture and decode sensitive information during transmission. This weakness directly violates security best practices and industry standards that mandate encrypted communication for any system handling authentication credentials or sensitive operational data.
The technical flaw manifests in the device's inability to establish secure communication channels, which creates multiple attack vectors for malicious actors. When users authenticate to the BCU device or when system configurations are transmitted, all data travels in plain text over the network, making it trivial for attackers to capture credentials, configuration parameters, and operational commands. This vulnerability specifically aligns with CWE-319, which addresses the exposure of sensitive information through improper communication channel usage. The attack surface is particularly concerning given that the device likely serves as a critical component in industrial control systems or building automation environments where unauthorized access could lead to significant operational disruptions or security breaches.
The operational impact of this vulnerability extends beyond simple credential theft to encompass potential system compromise and unauthorized access to critical infrastructure. An attacker who successfully intercepts communications could gain legitimate administrative access to the BCU device, potentially leading to unauthorized configuration changes, data manipulation, or complete system takeover. This risk is amplified in environments where the BCU device controls essential building systems such as heating, ventilation, air conditioning, or security systems. The vulnerability creates a persistent threat that remains active as long as the device operates with the unencrypted HTTP protocol, making it a significant concern for organizations managing industrial control systems where security is paramount.
Organizations should immediately implement mitigations including network segmentation to isolate affected devices, deployment of network monitoring tools to detect suspicious traffic patterns, and enforcement of secure communication policies. The most effective long-term solution involves firmware updates that implement HTTPS protocol support with proper certificate management and secure communication channels. Security teams should also consider implementing network access controls and regular vulnerability assessments to identify similar issues in other networked devices. This vulnerability demonstrates the critical importance of adhering to the principle of least privilege and secure communication practices as outlined in various cybersecurity frameworks including the NIST Cybersecurity Framework and ISO 27001 standards. The incident underscores the necessity for manufacturers to prioritize security by default in their device designs and to provide timely firmware updates to address known vulnerabilities.