CVE-2025-6328 D-Link DIR-815 hedwig.cgi sub_403794 stack-based overflow

High 8.7 Published 20 Jun 2025 Updated 20 Jun 2025

A remote attacker can trigger a stack-based buffer overflow in the D-Link DIR-815 router's web interface to execute arbitrary code.

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-2025-6328?

CVE-2025-6328 is a high-severity memory corruption vulnerability in D-Link DIR-815, published on 20 Jun 2025. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability was found in D-Link DIR-815 1.01. It has been declared as critical. This vulnerability affects the function sub_403794 of the file hedwig.cgi. The manipulation leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

Weakness: CWE-121, CWE-119

Which versions are affected by CVE-2025-6328?

It affects 1 product.

Products include Dlink Dir-815 Firmware.

How do I fix CVE-2025-6328?

No fix has been published for CVE-2025-6328 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-2025-6328 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-6328 exists.

Sources

Also known as GHSA-964h-pqmx-775p.