The vulnerability identified as CVE-2025-60858 affects the Reolink Video Doorbell Wi-Fi model DB_566128M5MP_W. The core issue is that the device stores and transmits Dynamic Domain Name System (DDNS) credentials in plaintext within its configuration files and update scripts. DDNS credentials are sensitive because they allow remote access to the device by resolving dynamic IP addresses to fixed domain names. By storing these credentials unencrypted and transmitting them without protection, an attacker with network access—such as someone on the same Wi-Fi network or capable of intercepting network traffic—can capture these credentials through passive monitoring or active interception techniques. Once obtained, the attacker can potentially log into the device remotely, manipulate its settings, view video feeds, or pivot to other devices on the network. The vulnerability does not require user interaction or authentication to exploit, making it easier to leverage. Although no exploits have been reported in the wild yet, the exposure of plaintext credentials is a significant security flaw. The lack of a CVSS score indicates that the vulnerability is newly published and not yet fully assessed. The absence of patch information suggests that a fix may not be available at the time of publication, increasing the urgency for mitigation through configuration changes or network controls. This vulnerability highlights poor security design in IoT devices, particularly in how sensitive data is handled during configuration and updates.

For European organizations, the impact of this vulnerability can be substantial, especially for those deploying Reolink video doorbells in residential, commercial, or small office environments. The exposure of DDNS credentials compromises the confidentiality of authentication data, enabling unauthorized remote access to video doorbells. This can lead to privacy violations, unauthorized surveillance, and potential manipulation of the device's functionality. In a broader context, compromised devices can serve as entry points for lateral movement within corporate or home networks, increasing the risk of further compromise or data breaches. The vulnerability undermines trust in IoT security and may result in reputational damage for organizations relying on these devices. Additionally, regulatory frameworks such as GDPR impose strict requirements on protecting personal data, and exploitation of this vulnerability could lead to non-compliance issues and associated penalties. The lack of available patches means organizations must rely on interim mitigations, which may not fully eliminate risk. The threat is particularly relevant for sectors with high security and privacy requirements, including healthcare, finance, and critical infrastructure, where video doorbells may be part of access control or monitoring systems.

To mitigate CVE-2025-60858, organizations should first assess whether they use the affected Reolink Video Doorbell model DB_566128M5MP_W. If so, immediate steps include isolating the device on a segmented network or VLAN to limit exposure to internal network traffic. Network traffic monitoring and intrusion detection systems should be configured to detect unusual access patterns or credential interception attempts. Since no official patches are currently available, users should avoid using DDNS features or disable remote access capabilities until a secure firmware update is released. Changing default credentials and employing strong, unique passwords can reduce risk, although this does not mitigate plaintext transmission. Employing VPNs or encrypted tunnels for remote access can protect credentials in transit. Vendors and integrators should be engaged to prioritize secure firmware updates that encrypt stored credentials and use secure protocols (e.g., TLS) for configuration and update communications. Regularly reviewing device configurations and network architecture to minimize exposure of IoT devices is also recommended. Finally, educating users about the risks of IoT device misconfiguration and monitoring for firmware updates is critical for long-term security.