CVE-2025-59366
📋 TL;DR
An authentication bypass vulnerability in AiCloud allows attackers to execute specific functions without proper authorization by exploiting an unintended side effect of Samba functionality. This affects ASUS router users with AiCloud enabled. Attackers could potentially access or modify files without authentication.
💻 Affected Systems
- ASUS routers with AiCloud functionality
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of AiCloud functionality allowing unauthorized file access, modification, or deletion of sensitive data stored on connected storage devices.
Likely Case
Unauthorized access to files shared through AiCloud, potentially exposing personal or sensitive data without authentication.
If Mitigated
Limited impact if AiCloud is disabled or proper network segmentation isolates the vulnerable service.
🎯 Exploit Status
The vulnerability description suggests unauthenticated exploitation is possible through Samba functionality. No public exploit code is mentioned in the advisory.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to ASUS Security Advisory for specific patched firmware versions
Vendor Advisory: https://www.asus.com/content/security-advisory/
Restart Required: Yes
Instructions:
1. Visit ASUS Security Advisory page. 2. Identify your router model. 3. Download latest firmware from ASUS support site. 4. Log into router admin interface. 5. Navigate to firmware update section. 6. Upload and apply new firmware. 7. Reboot router after update completes.
🔧 Temporary Workarounds
Disable AiCloud
allTemporarily disable AiCloud functionality to prevent exploitation until patching is possible
Login to router admin interface > AiCloud > Disable AiCloud
Disable Samba sharing
allDisable Samba file sharing within AiCloud settings
Login to router admin interface > AiCloud > Samba > Disable
🧯 If You Can't Patch
- Disable AiCloud functionality completely in router settings
- Implement network segmentation to isolate the router from sensitive networks and devices
🔍 How to Verify
Check if Vulnerable:
Check if AiCloud is enabled in router settings and compare firmware version against ASUS Security AdvisoryCheck Version:
Login to router admin interface > System > Firmware VersionVerify Fix Applied:
Verify firmware version matches or exceeds patched version listed in ASUS Security Advisory📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to AiCloud/Samba shares
- Authentication bypass logs in router system logs
- Unexpected file access patterns
Network Indicators:
- Unusual Samba protocol traffic to router
- AiCloud access from unexpected IP addresses
SIEM Query:
source="router_logs" AND (event="authentication_failure" OR event="file_access") AND (service="AiCloud" OR service="Samba")