CVE-2025-10689
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary commands on D-Link DIR-645 routers by exploiting a command injection flaw in the SOAP CGI service. Attackers can take full control of affected devices to install malware, create botnets, or pivot to internal networks. Only unsupported DIR-645 routers running specific firmware versions are affected.
💻 Affected Systems
- D-Link DIR-645
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing installation of persistent malware, creation of botnet nodes, credential theft, and lateral movement into internal networks.
Likely Case
Device takeover for cryptocurrency mining, DDoS participation, or credential harvesting from connected devices.
If Mitigated
Limited impact if device is behind firewall with restricted SOAP service access and network segmentation.
🎯 Exploit Status
Public exploit code exists in GitHub repository. Attack requires no authentication and is straightforward to execute.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: N/A
Vendor Advisory: https://www.dlink.com/
Restart Required: No
Instructions:
No official patch available. D-Link has ended support for DIR-645. Replace device with supported model.
🔧 Temporary Workarounds
Disable SOAP Service
allDisable the vulnerable SOAP CGI service if not required for functionality
Access router admin interface > Advanced > Network Filter > Disable SOAP service
Network Segmentation
allIsolate DIR-645 devices in separate VLAN with restricted access
🧯 If You Can't Patch
- Immediately replace DIR-645 with supported router model
- Block external access to port 80/443 on router via firewall rules
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin interface. If version is 105B01, device is vulnerable.Check Version:
Login to router admin interface and check Firmware Version under Status > Device InfoVerify Fix Applied:
Test SOAP service with proof-of-concept exploit to confirm command injection no longer works.📡 Detection & Monitoring
Log Indicators:
- Unusual SOAP service requests
- Command execution patterns in system logs
- Multiple failed SOAP authentication attempts
Network Indicators:
- Unusual outbound connections from router
- SOAP requests with shell metacharacters
- Traffic to known malicious IPs from router
SIEM Query:
source="router.log" AND ("soapcgi" OR "service=" AND ("|" OR ";" OR "$" OR "`"))