CVE-2025-55626 describes an Insecure Direct Object Reference (IDOR) vulnerability affecting the Reolink Smart 2K+ Plug-in Wi-Fi Video Doorbell with Chime, specifically in firmware version 3.0.0.4662_2503122283. IDOR vulnerabilities occur when an application exposes internal object references—such as database keys or session identifiers—without proper access control checks, allowing unauthorized users to access or manipulate data they should not be able to. In this case, the vulnerability allows unauthorized attackers to access admin-only settings and edit session storage data. This implies that an attacker can bypass authentication or authorization mechanisms to reach privileged configuration interfaces and potentially alter session parameters, which could lead to persistent unauthorized access or manipulation of device behavior. The lack of a CVSS score suggests this vulnerability has not yet been fully assessed for severity, and no known exploits have been observed in the wild. However, the ability to access admin settings without authorization on an IoT security device like a video doorbell is significant, as it could compromise device integrity, privacy, and security. The vulnerability likely stems from insufficient validation of user requests referencing internal objects or session data, allowing attackers to craft requests that directly access or modify restricted resources. Given the device's role in home and small business security, exploitation could lead to unauthorized surveillance, disabling of security features, or use of the device as a pivot point for further network attacks.

For European organizations, especially those deploying Reolink Smart 2K+ video doorbells in offices, retail locations, or residential facilities, this vulnerability poses a risk to physical security and privacy. Unauthorized access to admin settings could allow attackers to disable or manipulate video feeds, tamper with recorded footage, or alter device configurations to avoid detection. This undermines trust in security infrastructure and could facilitate espionage, theft, or sabotage. Additionally, compromised devices could be leveraged as entry points into corporate networks, increasing the risk of broader cyber intrusions. Privacy regulations such as GDPR impose strict requirements on protecting personal data, including video recordings; exploitation of this vulnerability could lead to data breaches and regulatory penalties. The impact extends beyond individual devices to organizational reputation and compliance posture.

To mitigate this vulnerability, organizations should first verify the firmware version of their Reolink Smart 2K+ devices and seek updates or patches from the vendor, even though none are currently listed. In the absence of an official patch, network-level controls should be implemented: restrict device management interfaces to trusted internal networks or VPNs, and employ strong network segmentation to isolate IoT devices from critical infrastructure. Enforce strict access controls and monitor device logs for unauthorized access attempts. Where possible, disable remote administration features or change default credentials to strong, unique passwords. Additionally, conduct regular security assessments of IoT devices and maintain an inventory to quickly identify vulnerable units. Organizations should also consider deploying intrusion detection systems capable of recognizing anomalous traffic patterns indicative of exploitation attempts targeting IoT devices.