CVE-2025-2553
📋 TL;DR
This vulnerability in D-Link DIR-618 and DIR-605L routers allows improper access control to the /goform/formVirtualServ endpoint, potentially enabling unauthorized configuration changes. Attackers must be on the local network to exploit it. Only unsupported legacy devices are affected.
💻 Affected Systems
- D-Link DIR-618
- D-Link DIR-605L
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Unauthorized attacker on local network could modify router settings like port forwarding, potentially exposing internal services or disrupting network functionality.
Likely Case
Local attacker modifies router configuration to redirect traffic or enable unauthorized access to internal services.
If Mitigated
With proper network segmentation and access controls, impact is limited to isolated network segments.
🎯 Exploit Status
Public exploit details available. Simple HTTP request manipulation required.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: N/A
Vendor Advisory: N/A
Restart Required: No
Instructions:
No official patch available as products are end-of-life. Replace with supported hardware.
🔧 Temporary Workarounds
Network Segmentation
allIsolate affected routers in separate VLANs to limit attack surface
Access Control Lists
allImplement firewall rules to restrict access to router management interface
🧯 If You Can't Patch
- Replace affected routers with supported models
- Implement strict network segmentation and monitor for suspicious access attempts
🔍 How to Verify
Check if Vulnerable:
Check router model and firmware version via web interface or serial number lookupCheck Version:
Check router web interface or use nmap to identify device modelVerify Fix Applied:
Verify router has been replaced with non-vulnerable model📡 Detection & Monitoring
Log Indicators:
- Unauthorized access to /goform/formVirtualServ endpoint
- Unexpected configuration changes
Network Indicators:
- Unusual HTTP POST requests to router management interface
- Suspicious internal traffic to router
SIEM Query:
source_ip IN (internal_range) AND dest_ip = router_ip AND uri_path CONTAINS '/goform/formVirtualServ'🔗 References
- https://lavender-bicycle-a5a.notion.site/D-Link-DIR-605L-formVirtualServ-1b153a41781f80b98645c3f7f4c5f4ae?pvs=4
- https://lavender-bicycle-a5a.notion.site/D-Link-DIR-618-formVirtualServ-1b053a41781f80b28443daabf03c0825?pvs=4
- https://vuldb.com/?ctiid.300167
- https://vuldb.com/?id.300167
- https://vuldb.com/?submit.516795
- https://www.dlink.com/
