CVE-2025-15543
📋 TL;DR
This vulnerability allows an attacker with physical access to a TP-Link VX800v v1.0 device to read system files by connecting a specially crafted USB device. The improper link resolution in the USB HTTP access path exposes root filesystem contents, potentially revealing sensitive configuration data. Only users of the specific TP-Link VX800v v1.0 device are affected.
💻 Affected Systems
- TP-Link VX800v
⚠️ 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
An attacker with physical access could extract sensitive system files, configuration data, credentials, or encryption keys, potentially enabling further attacks or system compromise.
Likely Case
An attacker with brief physical access could read configuration files, potentially obtaining network credentials or device management information.
If Mitigated
With proper physical security controls, the risk is minimal as physical access is required for exploitation.
🎯 Exploit Status
Exploitation requires physical access and a specially crafted USB device. No authentication is required once the USB device is connected.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check TP-Link support site for latest firmware
Vendor Advisory: https://www.tp-link.com/us/support/faq/4930/
Restart Required: Yes
Instructions:
1. Visit TP-Link support site for VX800v. 2. Download latest firmware. 3. Log into device web interface. 4. Navigate to System Tools > Firmware Upgrade. 5. Upload and install new firmware. 6. Device will reboot automatically.
🔧 Temporary Workarounds
Disable USB HTTP access
allDisable the USB HTTP access functionality if not needed
Physical security controls
allRestrict physical access to USB ports using locks or enclosures
🧯 If You Can't Patch
- Physically secure the device in locked cabinets or restricted access areas
- Disconnect or disable USB ports if not required for operation
🔍 How to Verify
Check if Vulnerable:
Check device firmware version in web interface under System Tools > Firmware Upgrade. If version is v1.0, device is vulnerable.Check Version:
Check web interface at System Tools > Firmware Upgrade or use SSH/Telnet if enabledVerify Fix Applied:
After firmware update, verify version is no longer v1.0. Test with USB device to confirm root filesystem is not accessible via HTTP.📡 Detection & Monitoring
Log Indicators:
- Unusual USB device connections
- HTTP requests to USB access paths
- File access attempts to system directories
Network Indicators:
- HTTP requests to USB-related endpoints from unexpected sources
SIEM Query:
source="vx800v-logs" AND (event="usb_connection" OR url_path="/usb/*")