CVE-2025-10634 D-Link DIR-823X Environment Variable goahead sub_412E7C command injection

Medium 5.3 Published 18 Sep 2025 Updated 18 Sep 2025

Remote attackers can execute arbitrary commands on D-Link DIR-823X routers via a command injection vulnerability in the goahead web server.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-10634?

CVE-2025-10634 is a medium-severity command injection vulnerability in D-Link DIR-823X, published on 18 Sep 2025. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A weakness has been identified in D-Link DIR-823X 240126/240802/250416. The impacted element is the function sub_412E7C of the file /usr/sbin/goahead of the component Environment Variable Handler. This manipulation of the argument terminal_addr/server_ip/server_port causes command injection. The attack can be initiated remotely. The exploit has been made available to the public and could be exploited.

Weakness: CWE-77, CWE-74

Which versions are affected by CVE-2025-10634?

It affects 1 product.

Products include Dlink Dir-823x Firmware.

How do I fix CVE-2025-10634?

No fix has been published for CVE-2025-10634 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-2025-10634 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-10634 exists.

Sources

Also known as GHSA-hq6r-hhqx-wvqf.