CVE-2025-2766
📋 TL;DR
This vulnerability allows network-adjacent attackers to bypass authentication on 70mai A510 devices using default passwords. Attackers can gain root access and execute arbitrary code without authentication. Only 70mai A510 devices with default configurations are affected.
💻 Affected Systems
- 70mai A510
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise with root-level arbitrary code execution, allowing attackers to install persistent malware, steal data, or use the device as a network pivot point.
Likely Case
Unauthorized access to device functions, configuration changes, and potential data exfiltration from the device.
If Mitigated
Limited impact if default passwords have been changed and network segmentation prevents adjacent access.
🎯 Exploit Status
Exploitation requires network adjacency but no authentication. Attackers need to identify the device on the network and use default credentials.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not applicable
Vendor Advisory: https://www.zerodayinitiative.com/advisories/ZDI-25-180/
Restart Required: No
Instructions:
No official patch available. Change all default passwords immediately and implement network segmentation.
🔧 Temporary Workarounds
Change Default Passwords
allChange all default passwords on the 70mai A510 device to strong, unique passwords.
Access device admin interface and navigate to password change settings
Network Segmentation
allIsolate 70mai A510 devices on separate VLANs or network segments to limit attack surface.
Configure network switches/routers to place devices on isolated VLAN
🧯 If You Can't Patch
- Implement strict network access controls to limit which devices can communicate with the 70mai A510
- Monitor network traffic for authentication attempts and unusual access patterns
🔍 How to Verify
Check if Vulnerable:
Attempt to authenticate to the device using default credentials. Check if default passwords are still in use.Check Version:
Check device firmware version through admin interface or device labelingVerify Fix Applied:
Verify that default passwords no longer work and only strong, unique passwords provide access.📡 Detection & Monitoring
Log Indicators:
- Failed authentication attempts followed by successful login
- Multiple authentication attempts from same source
- Root-level access from unexpected sources
Network Indicators:
- Authentication traffic to device from unexpected network segments
- Unusual outbound connections from device
SIEM Query:
source_ip="70mai_A510_IP" AND (event_type="authentication" AND result="success") AND user="default"