CVE-2025-46267
📋 TL;DR
A hidden debug functionality vulnerability exists in specific Elecom wireless routers. Remote attackers who can authenticate to the web management interface can enable hidden debug functions, potentially exposing sensitive system information or diagnostic data. This affects users of WRC-BE36QS-B and WRC-W701-B routers.
💻 Affected Systems
- ELECOM WRC-BE36QS-B
- ELECOM WRC-W701-B
⚠️ 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
Attackers gain access to debug functions that could reveal sensitive system information, configuration details, or diagnostic data that could aid further attacks.
Likely Case
Authenticated attackers enable debug functions to gather system information and potentially identify additional vulnerabilities for exploitation.
If Mitigated
With proper access controls and network segmentation, impact is limited to information disclosure from debug functions.
🎯 Exploit Status
Exploitation requires valid authentication credentials to access the web management interface.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific firmware versions
Vendor Advisory: https://www.elecom.co.jp/news/security/20250722-01/
Restart Required: Yes
Instructions:
1. Visit Elecom support website 2. Download latest firmware for your model 3. Access router web interface 4. Navigate to firmware update section 5. Upload and apply new firmware 6. Reboot router
🔧 Temporary Workarounds
Restrict WebGUI Access
allLimit access to router web management interface to trusted IP addresses only
Change Default Credentials
allEnsure strong, unique passwords are set for router administration
🧯 If You Can't Patch
- Implement network segmentation to isolate routers from untrusted networks
- Enable logging and monitoring for unauthorized access attempts to web interface
🔍 How to Verify
Check if Vulnerable:
Check router firmware version against vendor advisory. If running affected firmware versions, device is vulnerable.Check Version:
Check router web interface status page or use vendor-specific CLI commands if availableVerify Fix Applied:
Verify firmware version has been updated to patched version specified in vendor advisory.📡 Detection & Monitoring
Log Indicators:
- Unusual authentication attempts to web interface
- Access to debug or diagnostic pages
Network Indicators:
- Traffic to router web interface from unexpected sources
SIEM Query:
source_ip="router_ip" AND (uri="*debug*" OR uri="*diagnostic*" OR failed_auth_attempts > threshold)