CVE-2022-43648 Memory corruption in DIR-3040

High 8.8 Published 29 Mar 2023 Updated 12 Feb 2025

Network-adjacent attackers can execute arbitrary code on D-Link DIR-3040 routers via a heap buffer overflow in the MiniDLNA service without authentication.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2022-43648?

CVE-2022-43648 is a high-severity memory corruption vulnerability in D-Link DIR-3040, published on 29 Mar 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DIR-3040 1.20B03 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the MiniDLNA service. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the MiniDLNA service. Was ZDI-CAN-19910.

Weakness: CWE-122

Which versions are affected by CVE-2022-43648?

It affects 1 product.

Products include Dlink Dir-3040 Firmware.

How do I fix CVE-2022-43648?

No fix has been published for CVE-2022-43648 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2022-43648 being exploited?

There is no known exploitation of CVE-2022-43648 in the wild and no public exploit code.

Sources

Also known as GHSA-p682-rxp7-r33h.