CVE-2025-26408
📋 TL;DR
Wattsense Bridge devices have an unprotected JTAG interface that allows physical attackers to gain full device access. This enables firmware extraction, modification, and debugging capabilities. All known versions of Wattsense Bridge devices are affected.
💻 Affected Systems
- Wattsense Bridge devices
⚠️ 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
Attacker with physical access can extract sensitive data, install malicious firmware, disable security controls, and potentially pivot to connected systems.
Likely Case
Physical attacker extracts configuration data, modifies device behavior, or installs persistent backdoors for future access.
If Mitigated
With proper physical security controls, risk is limited to authorized personnel with physical access.
🎯 Exploit Status
Exploitation requires physical access and JTAG hardware/software, but the process is straightforward once physical access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: None available
Vendor Advisory: https://support.wattsense.com/hc/en-150/articles/13366066529437-Release-Notes
Restart Required: No
Instructions:
No official patch available. Contact Wattsense for hardware replacement options or mitigation guidance.
🔧 Temporary Workarounds
Physical JTAG Disable
allPhysically disable or obscure JTAG interface on PCB to prevent access
N/A - Physical modification required
Secure Physical Access
allImplement strict physical security controls around device locations
N/A - Policy/process controls
🧯 If You Can't Patch
- Implement strict physical security controls and access monitoring for device locations
- Consider hardware replacement with newer models that have JTAG protection
🔍 How to Verify
Check if Vulnerable:
Physically inspect device PCB for accessible JTAG interface pinsCheck Version:
Check device firmware version via web interface or serial consoleVerify Fix Applied:
Attempt JTAG connection with appropriate hardware; successful connection indicates vulnerability📡 Detection & Monitoring
Log Indicators:
- Physical access logs showing unauthorized entry to device locations
Network Indicators:
- Unusual network traffic patterns from bridge devices
SIEM Query:
Search for physical access control system alerts for device locations