CVE-2025-15680 in TLogger
Summary
by MITRE • 08/10/2026
TBEA TLogger V2.1.0.0B0.0.0.0 exposes a UART interface on the device's circuit board without sufficient protection. A physically proximate attacker can connect to the UART interface and observe the device boot process and runtime debug output. The disclosed information includes operating system details, software versions, network configuration, filesystem paths, and other implementation and debugging information that may assist an attacker in further compromising the device.
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Analysis
by VulDB Data Team • 08/10/2026
The TBEA TLogger V2.1.0.0 device presents a critical security vulnerability through its exposed UART interface, representing a fundamental failure in hardware security design. This vulnerability falls under CWE-316 which specifically addresses sensitive information exposure in physical interfaces, and aligns with ATT&CK technique T1059.001 for command and scripting interpreter. The device's circuit board exposes a Universal Asynchronous Receiver-Transmitter interface that lacks proper physical protection mechanisms, creating an attack surface that can be exploited by adversaries with physical access to the device.
The technical flaw manifests as insufficient hardware-level security controls that allow unauthorized physical access to the serial communication port. When an attacker connects to this exposed UART interface, they gain access to comprehensive runtime information that would normally remain protected within a secure system environment. This includes detailed operating system identification data, precise software version strings, active network configuration parameters, filesystem directory structures, and implementation-specific debugging information that collectively provide attackers with valuable intelligence for subsequent exploitation phases.
The operational impact of this vulnerability extends beyond simple information disclosure, as it enables sophisticated attack vectors that can lead to complete device compromise. The exposed boot process details reveal system initialization sequences and memory layout information that can be leveraged for privilege escalation attacks or firmware exploitation techniques. Network configuration data provides insight into the device's communication protocols, IP addressing schemes, and potentially vulnerable network services. Filesystem paths and implementation details expose potential attack vectors targeting specific software components or file locations that may contain sensitive credentials or configuration files.
Security mitigation strategies must address both physical and logical access controls to prevent unauthorized UART interface access. Physical security measures should include hardware-level protections such as UART interface shielding, secure physical enclosures, and anti-tamper mechanisms that prevent unauthorized connection attempts. Network-based mitigations should implement proper access control lists and firewall rules that restrict communication channels while maintaining legitimate operational functionality. Organizations should also consider implementing device authentication mechanisms and secure boot processes that can detect and prevent unauthorized physical access attempts. The vulnerability demonstrates the critical importance of applying defense-in-depth principles to embedded systems, where physical access controls must complement traditional network security measures to provide comprehensive protection against sophisticated attack scenarios.
This vulnerability represents a classic example of poor security by design in IoT devices, where hardware-level security considerations are often overlooked in favor of functional requirements. The exposed debug interface creates an immediate risk for attackers who can perform reconnaissance without requiring advanced technical skills or specialized tools beyond basic physical access capabilities. Such vulnerabilities are particularly concerning in industrial control systems and embedded environments where physical security may be compromised due to operational requirements or cost constraints, making the implementation of proper hardware-level protections essential for maintaining overall system security posture and preventing potential supply chain attacks that could leverage this information disclosure for broader network infiltration attempts.