CVE-2025-55623 is a security vulnerability identified in the lock screen component of Reolink software version 4.54.0.4.20250526. Reolink is known for its video surveillance products, including IP cameras and associated software. The vulnerability allows an attacker to bypass authentication mechanisms by leveraging the Android Debug Bridge (ADB) interface. ADB is a versatile command-line tool that facilitates communication with Android devices for debugging and development purposes. In this context, the vulnerability implies that an attacker with access to the device's ADB interface can circumvent the lock screen authentication, gaining unauthorized access to the device and potentially its video feeds or control functions. The vulnerability does not specify affected versions beyond the noted software version, and there is no CVSS score assigned yet. No patches or known exploits in the wild have been reported at the time of publication. The lack of authentication bypass via ADB suggests that the attacker must have some level of device access or network proximity to exploit this vulnerability, as ADB typically requires physical or network-level access to the device. However, if ADB is exposed or enabled insecurely, this vulnerability could be exploited remotely or locally to compromise device security.

For European organizations, especially those relying on Reolink surveillance systems for physical security monitoring, this vulnerability poses a significant risk. Unauthorized bypass of lock screen authentication could allow attackers to access live video streams, recorded footage, or control device settings, leading to breaches of privacy and security. This could facilitate espionage, unauthorized surveillance, or tampering with security infrastructure. Organizations in critical infrastructure sectors, government facilities, corporate offices, and public spaces using Reolink devices could face operational disruptions and reputational damage. Furthermore, compromised surveillance devices could be leveraged as entry points for broader network intrusions if connected to internal networks. The impact is heightened in environments where physical security depends heavily on these devices and where ADB interfaces are not properly secured or disabled.

To mitigate this vulnerability, European organizations should first verify whether Reolink devices are running the affected version 4.54.0.4.20250526 or similar. Given the absence of an official patch, immediate steps include disabling ADB interfaces on all Reolink devices unless absolutely necessary, as ADB access is the vector for exploitation. Network segmentation should be enforced to isolate surveillance devices from critical internal networks, limiting access to trusted administrators only. Organizations should audit device configurations to ensure that remote debugging or developer options are disabled. Physical security controls should be enhanced to prevent unauthorized physical access to devices. Monitoring network traffic for unusual ADB connections or commands can help detect exploitation attempts. Finally, organizations should maintain communication with Reolink for updates or patches addressing this vulnerability and apply them promptly once available.