CVE-2025-62673
📋 TL;DR
A heap-based buffer overflow vulnerability in TP-Link Archer AX53 v1.0 routers allows attackers on the same network to crash the device or potentially execute arbitrary code by sending specially crafted network packets. This affects the tdpserver modules in firmware versions up to 1.3.1 Build 20241120. Attackers must be adjacent to the target network.
💻 Affected Systems
- TP-Link Archer AX53 v1.0
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to full router compromise, credential theft, network pivoting, and persistent backdoor installation.
Likely Case
Denial of service causing router crashes and network disruption, requiring physical reset.
If Mitigated
Limited to denial of service if exploit attempts are blocked by network segmentation or intrusion prevention systems.
🎯 Exploit Status
Exploitation requires crafting specific network packets but no authentication needed. Adjacent network access required.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check TP-Link support site for latest firmware
Vendor Advisory: https://www.tp-link.com/en/support/download/archer-ax53/v1/#Firmware
Restart Required: Yes
Instructions:
1. Visit TP-Link support page for Archer AX53 v1.0. 2. Download latest firmware. 3. Log into router admin interface. 4. Navigate to System Tools > Firmware Upgrade. 5. Upload and install new firmware. 6. Router will reboot automatically.
🔧 Temporary Workarounds
Network Segmentation
allIsolate router management interface from general network traffic
Disable Unnecessary Services
allTurn off any unused network services on the router
🧯 If You Can't Patch
- Segment router on isolated VLAN away from untrusted devices
- Implement network monitoring for abnormal packet patterns targeting router
🔍 How to Verify
Check if Vulnerable:
Check firmware version in router admin interface under System Tools > Firmware UpgradeCheck Version:
Log into router web interface and check firmware versionVerify Fix Applied:
Confirm firmware version is newer than 1.3.1 Build 20241120📡 Detection & Monitoring
Log Indicators:
- Router crash/reboot events
- Unusual network service restarts
Network Indicators:
- Malformed packets to router management ports
- Unusual traffic patterns to tdpserver service
SIEM Query:
source="router_logs" AND (event="crash" OR event="reboot") OR dest_port=router_management_port AND packet_size>normal_threshold