CVE-2025-2766 Overview
CVE-2025-2766 is an authentication bypass vulnerability affecting the 70mai A510 dashcam. The flaw stems from the device shipping with a default password in its user account configuration [CWE-1393]. Network-adjacent attackers can leverage the default credentials to bypass authentication and execute arbitrary code as root on the device. The issue was reported through the Zero Day Initiative as ZDI-CAN-24996 and published as advisory ZDI-25-180. No authentication is required for exploitation, and the attack can be carried out from an adjacent network position.
Critical Impact
An adjacent-network attacker can bypass authentication using default credentials and gain root-level code execution on the 70mai A510 dashcam.
Affected Products
- 70mai A510 dashcam hardware
- 70mai A510 firmware version 1.0.40ww.2024.04.19
- Deployments exposing the device's network services to adjacent wireless networks
Discovery Timeline
- 2025-06-06 - CVE-2025-2766 published to NVD
- 2026-06-17 - Last updated in NVD database
- Reported via Zero Day Initiative as ZDI-CAN-24996, published as ZDI-25-180
Technical Details for CVE-2025-2766
Vulnerability Analysis
The vulnerability resides in the default user account configuration shipped with the 70mai A510 firmware. The device contains a preconfigured account with a known default password that is not forced to change during initial setup. An attacker on the same network segment as the dashcam, typically the device's Wi-Fi network, can authenticate using these credentials. Once authenticated, the attacker reaches functionality that runs in the context of the root user, leading to arbitrary code execution on the embedded Linux system. Because the credentials are static across deployments, the attack is repeatable against any vulnerable unit. The flaw is categorized under [CWE-1393] (Use of Default Password).
Root Cause
The root cause is an insecure default configuration. The firmware bundles a built-in account whose password is fixed in the shipping image and is not rotated, randomized per device, or required to be changed on first use. This design pattern collapses the authentication boundary because possession of the firmware or any prior credential disclosure exposes every device using that build.
Attack Vector
Exploitation requires adjacent network access, such as connecting to the dashcam's Wi-Fi access point or being on the same local network. The attacker submits the default credentials to the device's authentication interface and receives a valid session. From there, exposed administrative or service endpoints allow command execution as root, enabling firmware tampering, persistent implants, exfiltration of recorded video, or pivoting to connected mobile clients.
No verified proof-of-concept code is available. Refer to the
Zero Day Initiative advisory ZDI-25-180 for technical specifics.
Detection Methods for CVE-2025-2766
Indicators of Compromise
- Successful authentication events on the 70mai A510 from unexpected client MAC addresses or IP ranges
- Unscheduled firmware modifications, new files, or altered configuration on the device
- Outbound connections from the dashcam to unknown hosts following a wireless association event
Detection Strategies
- Monitor wireless association logs for unknown clients connecting to the dashcam's access point
- Inspect device-issued network traffic for anomalous command-and-control patterns or large outbound transfers
- Compare firmware checksums and persistent storage hashes against a known-good baseline of 1.0.40ww.2024.04.19
Monitoring Recommendations
- Capture and review Wi-Fi probe and association events in environments where the dashcam is operated
- Alert on any administrative session originating from an IP not associated with the owner's paired mobile device
- Track DNS queries from the device for domains outside the vendor's known telemetry endpoints
How to Mitigate CVE-2025-2766
Immediate Actions Required
- Change the default account password on the device immediately if the firmware permits credential modification
- Restrict physical and wireless proximity to the dashcam, including disabling its Wi-Fi access point when not actively pairing
- Isolate the dashcam from networks that host other sensitive devices to limit pivoting opportunities
Patch Information
No vendor patch has been linked in the published advisory at the time of NVD publication. Consult the Zero Day Initiative Advisory ZDI-25-180 and 70mai vendor channels for firmware updates that supersede 1.0.40ww.2024.04.19. Apply any newer firmware released by 70mai that addresses default credential handling.
Workarounds
- Power off the dashcam's wireless interface when video transfer is not required
- Operate the device in a dedicated, segmented SSID with strong WPA2/WPA3 protection and a non-default passphrase
- Avoid pairing the dashcam in untrusted environments where adjacent attackers may be present
# Example: restrict the dashcam to a segmented Wi-Fi network
# Configure on the host access point, not the dashcam itself
ssid="dashcam-isolated"
wpa_passphrase="<strong-unique-passphrase>"
ap_isolate=1
disable_internet_routing=true
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
