CVE-2026-8345 D-Link DIR-816 singlePortForward sub_445E7C command injection

Medium 5.3 Published 11 May 2026 Updated 12 May 2026

Remote attackers can execute arbitrary commands on D-Link DIR-816 routers via the singlePortForward 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-2026-8345?

CVE-2026-8345 is a medium-severity command injection vulnerability in Dlink Dir-816 Firmware, published on 11 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A security vulnerability has been detected in D-Link DIR-816 1.10CNB05_R1B011D88210. Affected by this issue is the function sub_445E7C of the file /goform/singlePortForward. Such manipulation of the argument ip_address leads to command injection. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used.

Weakness: CWE-77, CWE-74

Which versions are affected by CVE-2026-8345?

It affects 1 product.

Products include Dlink Dir-816 Firmware.

How do I fix CVE-2026-8345?

No fix has been published for CVE-2026-8345 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-2026-8345 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-8345 exists.

All Dlink Dir-816 Firmware vulnerabilities

Sources

Also known as GHSA-c33v-7hr2-gw69.