CVE-2026-4465 D-Link DIR-513 formSysCmd os command injection

Medium 5.3 Published 20 Mar 2026 Updated 20 Mar 2026

Remote attackers can execute arbitrary OS commands on unsupported D-Link DIR-513 routers via the formSysCmd interface.

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-2026-4465?

CVE-2026-4465 is a medium-severity command injection vulnerability in D-Link DIR-513, published on 20 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A flaw has been found in D-Link DIR-513 1.10. The impacted element is an unknown function of the file /goform/formSysCmd. Executing a manipulation of the argument sysCmd can lead to os command injection. The attack may be launched remotely. The exploit has been published and may be used. This vulnerability only affects products that are no longer supported by the maintainer.

Weakness: CWE-78, CWE-77

Which versions are affected by CVE-2026-4465?

It affects 1 product.

Products include Dlink Dir-513 Firmware.

How do I fix CVE-2026-4465?

No fix has been published for CVE-2026-4465 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-2026-4465 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-4465 exists.

Sources

Also known as GHSA-fwhx-w56v-j34j.