CVE-2025-12003
📋 TL;DR
A path traversal vulnerability in WebDAV allows unauthenticated remote attackers to access or modify files outside intended directories. This affects ASUS routers with vulnerable firmware versions. Attackers can compromise device integrity without authentication.
💻 Affected Systems
- ASUS routers with WebDAV enabled
⚠️ 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 device compromise allowing file system access, configuration modification, or firmware manipulation leading to persistent backdoors.
Likely Case
Unauthorized file access or modification, potentially exposing sensitive configuration files or enabling further exploitation.
If Mitigated
Limited impact with proper network segmentation and access controls preventing external exploitation.
🎯 Exploit Status
Path traversal vulnerabilities typically have low exploitation complexity. Unauthenticated access makes this particularly dangerous.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check ASUS firmware updates for your specific router model
Vendor Advisory: https://www.asus.com/security-advisory/
Restart Required: Yes
Instructions:
1. Visit ASUS support site for your router model. 2. Download latest firmware version. 3. Log into router admin interface. 4. Navigate to firmware update section. 5. Upload and apply new firmware. 6. Reboot router.
🔧 Temporary Workarounds
Disable WebDAV
allTurn off WebDAV functionality if not required
Router admin interface: Navigate to USB Application > Servers Center > Disable WebDAV
Network Segmentation
allRestrict access to WebDAV services
Router firewall: Block external access to WebDAV ports (typically 80/443)
🧯 If You Can't Patch
- Disable WebDAV functionality completely
- Implement strict firewall rules to block all external access to router management interfaces
🔍 How to Verify
Check if Vulnerable:
Check router firmware version against ASUS advisory. If WebDAV is enabled and firmware is outdated, assume vulnerable.Check Version:
Router admin interface: System Log > General Log shows firmware versionVerify Fix Applied:
Verify firmware version matches patched version from ASUS advisory and test WebDAV functionality.📡 Detection & Monitoring
Log Indicators:
- Unusual WebDAV access patterns
- Path traversal attempts in URL parameters
- Unauthorized file access attempts
Network Indicators:
- HTTP requests with ../ sequences to WebDAV endpoints
- Unusual traffic to router WebDAV ports
SIEM Query:
webdav AND ("..\" OR "../" OR "%2e%2e")