CVE-2026-6014 D-Link DIR-513 POST Request formAdvanceSetup buffer overflow

High 8.7 Published 10 Apr 2026 Updated 10 Apr 2026

Remote attackers can trigger a buffer overflow in the D-Link DIR-513 router's POST handler, potentially executing arbitrary code on this unsupported device.

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-2026-6014?

CVE-2026-6014 is a high-severity memory corruption vulnerability in D-Link DIR-513, published on 10 Apr 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. This issue affects the function formAdvanceSetup of the file /goform/formAdvanceSetup of the component POST Request Handler. This manipulation of the argument webpage causes buffer overflow. It is possible to initiate the attack 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-120, CWE-119

Which versions are affected by CVE-2026-6014?

It affects 1 product.

Products include Dlink Dir-513 Firmware.

How do I fix CVE-2026-6014?

No fix has been published for CVE-2026-6014 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-2026-6014 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-6014 exists.

Sources

Also known as GHSA-ch75-q946-9j9r.