CVE-2022-40720 Command injection in DIR-2150

High 8.8 Published 26 Jan 2023 Updated 1 Apr 2025

Network-adjacent attackers can execute arbitrary commands on D-Link DIR-2150 routers via the xupnpd 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-2022-40720?

CVE-2022-40720 is a high-severity command injection vulnerability in D-Link DIR-2150, published on 26 Jan 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 commands on affected installations of D-Link DIR-2150 4.0.1 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the Dreambox plugin for the xupnpd service, which listens on TCP port 4044 by default. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of the router. Was ZDI-CAN-15935.

Weakness: CWE-78

Which versions are affected by CVE-2022-40720?

It affects 1 product.

Products include Dlink Dir-2150 Firmware.

How do I fix CVE-2022-40720?

No fix has been published for CVE-2022-40720 yet. Limit exposure of the affected software until one is available.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2022-40720 being exploited?

There is no known exploitation of CVE-2022-40720 in the wild and no public exploit code.

Sources

Also known as GHSA-x244-8v9r-2f6g.