CVE-2022-50976 in VibroLine Configurator 4.0
Summary
by MITRE • 02/02/2026
A local attacker could cause a full device reset by resetting the device passwords using an invalid reset file via USB.
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Analysis
by VulDB Data Team • 02/03/2026
This vulnerability represents a critical local privilege escalation and device compromise issue affecting embedded systems and IoT devices that utilize password reset functionality through USB interfaces. The flaw allows an attacker with physical access to a device to trigger a complete system reset by manipulating password reset files via USB connection, effectively bypassing normal authentication mechanisms and potentially exposing the device to further exploitation. The vulnerability stems from inadequate input validation and error handling within the device's password reset implementation, specifically when processing reset files transmitted through USB interfaces.
The technical implementation of this vulnerability exploits weak validation of reset file contents and lacks proper authentication checks during the reset process. When a reset file is presented via USB, the system fails to verify the integrity and authenticity of the file before executing the password reset operation. This allows an attacker to craft or manipulate a reset file containing invalid or malicious data that triggers an unhandled exception or system crash, resulting in a full device reset. The vulnerability is particularly concerning because it requires minimal attack surface and can be executed by any local attacker with physical access to the device, making it applicable to a wide range of embedded systems including routers, industrial control systems, and IoT devices.
From an operational impact perspective, this vulnerability creates a significant risk for device availability and potentially data integrity. The full device reset capability can be used to disrupt services, clear security configurations, or provide a recovery mechanism for attackers who have already gained physical access. The attack can be executed silently without requiring network connectivity or specialized tools beyond basic USB connectivity, making it particularly dangerous in environments where physical security is compromised. Organizations may experience service disruptions, potential data loss, and increased attack surface for subsequent exploitation attempts, especially when the reset operation clears security configurations or resets to factory defaults.
The vulnerability aligns with CWE-20 Improper Input Validation and CWE-122 Heap-based Buffer Overflow, representing a classic case of insufficient validation of user-supplied data in critical system functions. From an ATT&CK framework perspective, this vulnerability maps to T1547.001 Account Manipulation and T1072 Software Deployment Tools, as it allows for unauthorized account modification and system state manipulation. The attack chain typically involves physical access to the device, USB insertion, and execution of the malicious reset process, making it a prime example of a physical attack vector that can lead to broader system compromise. Organizations should implement robust input validation, authentication mechanisms, and secure boot processes to prevent exploitation of such vulnerabilities.
Mitigation strategies should focus on implementing comprehensive input validation for all reset files, requiring cryptographic signatures or authentication mechanisms before executing reset operations, and ensuring proper error handling that prevents system crashes or resets. Device manufacturers should implement secure boot processes that verify reset file integrity, establish robust access controls for USB interfaces, and implement logging mechanisms to detect unauthorized reset attempts. Additionally, regular firmware updates, physical security measures, and network segmentation can help reduce the attack surface and prevent exploitation of this vulnerability in production environments. The implementation of these controls aligns with security best practices outlined in NIST SP 800-82 and ISO/IEC 27001 standards for industrial control systems and embedded device security.