Buffer Overflow in D-Link Go-RT-AC750 hnap_main

Successful exploitation can cause memory corruption and may enable remote code execution on the affected router. Compromise of the device can allow an attacker to take control of the router, intercept or manipulate network traffic traversing it, use the device as a foothold for lateral movement into adjacent networks, and conscript the device into botnet activity or other follow-on malicious operations.

If immediate replacement is not possible, reduce exposure by removing administrative interfaces from untrusted networks, restricting access to the management plane to trusted hosts only, segmenting affected devices from sensitive internal systems, disabling unnecessary remote management features, and enforcing strong administrative credentials. Additional defensive measures include monitoring for signs of compromise, validating firmware integrity where possible, and isolating affected routers from direct Internet exposure until they can be replaced.

No official vendor patch is available for the affected end-of-life D-Link Go-RT-AC750 models and firmware versions identified for this vulnerability. The recommended remediation is to retire and replace affected devices with supported hardware receiving security updates. Organizations should identify exposed or deployed affected units and remove them from production networks as a priority.