CVE-2025-2766 is a high-severity vulnerability affecting the 70mai A510 device, specifically version v1.0.40ww.2024.04.19. The vulnerability arises from the use of default password authentication, classified under CWE-1393. The default configuration of user accounts includes a default password that has not been changed or disabled, allowing network-adjacent attackers to bypass authentication without any credentials. Exploiting this flaw, an attacker can execute arbitrary code with root privileges, effectively gaining full control over the affected device. The vulnerability requires no user interaction and no prior authentication, making it highly exploitable. The CVSS v3.0 score is 8.8, reflecting the critical impact on confidentiality, integrity, and availability. The attack vector is adjacent network access, meaning the attacker must be on the same local network or connected through a network segment that can reach the device. Although no known exploits are currently reported in the wild, the potential for exploitation is significant due to the ease of bypassing authentication and the high privileges gained. This vulnerability was assigned by the Zero Day Initiative (ZDI) under the identifier ZDI-CAN-24996 and was published on June 6, 2025.

For European organizations, the impact of this vulnerability can be substantial, especially for those using 70mai A510 devices in operational environments. The ability for an attacker to bypass authentication and execute code as root can lead to full device compromise, data theft, manipulation of device functionality, or use of the device as a pivot point for lateral movement within internal networks. This could disrupt business operations, compromise sensitive data, and potentially lead to broader network intrusions. Given the device’s likely use in automotive or IoT contexts (70mai is known for dashcams and related devices), compromised devices could affect vehicle security, surveillance, or data collection systems. The lack of authentication requirement and the ease of exploitation increase the risk of attacks from insiders or external actors who gain network access. The absence of known exploits in the wild currently provides a limited window for mitigation before active exploitation might occur.

To mitigate this vulnerability, organizations should immediately audit all 70mai A510 devices to identify affected firmware versions. The primary mitigation is to change default passwords to strong, unique passwords immediately upon deployment or discovery. If possible, disable default accounts or restrict network access to the devices via network segmentation and firewall rules to limit exposure to trusted networks only. Monitoring network traffic for unusual activity related to these devices can help detect exploitation attempts. Since no official patches are currently available, organizations should engage with the vendor for firmware updates or security advisories. Additionally, implementing network access controls such as VLAN segmentation, zero trust network access (ZTNA), or VPN requirements for device management can reduce the attack surface. Regularly updating device firmware when patches become available and incorporating these devices into vulnerability management programs are also critical steps.